350 Double Hump Heads

350 Double Hump HeadsMar 18, 2014 #10 COPO Veteran Member Lifetime Gold Member Sep 15, 1999 22,852 Ontario, Canada Mine are E10 and D290. double hump heads and spark plug sizes. delcoenginesandcomponents (209) 100%. 350 hp double hump head are high compression ,if you are building it ,then you will have to make sure that squish/quench area is around. 1 comp, 450 dyno [email protected] 6500 rpm, 70 nova ran 11. 10065202: 1987 through 1995 350ci truck engines. 202 Double Hump Heads. Summit Racing™ Cast Iron Cylinder Heads for Small Chevy Cylinder Head, Cast Iron, Assembled, 72cc Chamber, 165cc Intake Runner, Chevy, 302, 327, 350, 400, Each See More Specifications | Check the Fit Estimated Ship Date: Today Would you rather pick it up? Select Location Free Shipping Prop 65 Warning Add To Cart Beat A Price Guarantee Wish List. Get the best deals for 350 double hump heads at eBay. I wouldnt use the 416 heads, the runners are to big for a 307 plus the heat crossover going into both exhaust ports bothers me, stick with the 520s, It was a long time ago but Ive done a 350 with 520s ported, solid flattappet, 11. How to identify camel hump (aka double hump) small block. The top head is the 'lower horsepower' version (300hp and under) used on 67-68 327 applications with 1. 350 double hump heads for sale: Search Result. Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum!. Compatible With Sbc Engines With Double Hump Heads Or Standard Heads ; Compatible With Long Water Pump And 19319932 Or 19319961 Style Power Steering Pump ;. With my old camel-hump heads, there were two bolt holes missing. Standard size nodular iron crankshaft, 1988 corvette roller block, 207/213 roller cam. Reply Save Like 1 - 15 of 15 Posts T tmoble · #2 · Apr 15, 2010. i want to get 12 bolt rearend out of the old truck and find an old chevy II. Been a long time, but if I remember right, flat tops (4 valve relief stock 350 piston) got you 10. We have a great online selection at the lowest prices with Fast & Free shipping on many items!. These are the famous "double hump" cylinder heads that initially found their way onto the high performance engines (302ci/327ci/350ci) in 1966 and 1967. But that would also require more. 350 SBC 4 bolt 1970, heads. After installation of the new components, the 355 produced 449 hp at 5,900 rpm and 446 lb-ft of torque at 4,600 rpm. How much hp does 350 have with double hump heads have?. 350 CHEVY HEADS BEST AND WORST 1. Trick Flow Specialties TFS. 350 with double hump heads - YouTube 1985 camaro with swapped in built 350 small block Chevy with 327 #462 double hump heads. Casting numbers 3782461 and 3782461X used 1. Ran ok thoughjust no power Mar 20, 2006 #7 P pdq67 BANNED Jul 26, 2001 10,496 Columbia, MO, USA The -416's are more smog shaped likw W/P's Torquers whereas the -601's are double-quenched and shaped a whole lot like the old -461 double-hump fuelie heads!. They did not come with hardened valve seats so they are not good for unleaded gas unless they have been modified. 1985 camaro with swapped in built 350 small block Chevy with 327 #462 double hump heads. I think the block is early to mid 70s, but weren't all double hump heads produced mid to late 60s and use the larger 13/. Googled a few numbers and it is a 1970 350, so I thought lets take it down and see if it is a 2 or 4 bolt main, and what pistons it has. 1M views Double Hump Heads Which Head to run 68K views 3 years ago Golden Ticket or Fools Gold? Decoding Small Block Chevy Casting Numbers for Budget. 9 results for 350 double hump heads Save this search Shipping to: 98837 Brand New $20. com: New Replacement Vortec Cylinder …. Summit Racing™ Cast Iron Cylinder Heads for Small Chevy. However, even with a 4" wide chamber and large valves, these heads will still fit on a. Based on the iconic “double-hump” or “camel-back” (fuelie) cylinder heads of the ‘60s and early ‘70s—including the famed 461 Fuelie heads—the DHC 175 castings are modern aluminum versions with straight spark-plug locations and improved 60cc combustion chambers. Double hump heads spark plug Q. com · #9 · Feb 5, 2013 Camel back heads are almost 50 years old. 60 exhaust with camel humps, 350, 64cc chambers, straight plugs or angle plugs. These were commonly called “Fuelie” heads. What are you trying to do with your 350? See more Save BOBCRMAN@aol. 040 ,if not ,you will have detonation. 350 CHEVY HEADS BEST AND WORST 1. Buy New Replacement Vortec Cylinder Heads GM Marine 5. 95 New ---- Used ARP HEAD BOLT KIT 134-3610 SB CHEVY GEN III/ LS 2004 & LATER PRO SERIES (53) $126. The double hump heads were factory installed on all High Performance Fuel Injected and carbureted Chevrolet vehicles including Corvette, Camaro RS SS & Z-28, Chevelle Malibu, Chevy II Nova, Bel Air, & Impala. I've turned the engine by hand to set the lifters and the intake valves don't hit the block deck nor cylinder bores. How to identify camel hump (aka double hump) small …. 3927186) Chevrolet Small Block Double Hump Heads. After installation of the new components, the 355 produced 449 hp at 5,900 rpm and 446 lb-ft of torque at 4,600 rpm. The engine is a stock 350 4 bolt main out of a 68 camaro. Question type: Car Customization. The van's mounting bracket on the driver's side has two mounting bolts on the head and one down by the crankshaft. Then, emissions concerns forced lower compression ratios, and there was no need for a high-performance, iron production cylinder head until trucks needed more power in the ‘90s when the Vortec head was developed. 25/1 with 64cc heads and 9. 67 Camaro 4-spd, 350 with cam, headers, HEI, and double hump heads. Put 350 76cc heads on a 305. Putting a Serpentine System on My '78 Z. Extremely responsive from idle up. Summit Racing™ Cast Iron Cylinder Heads for Small Chevy. This compression is high enough to use a good size cam. Engine 3917291 Double hump heads on a 1971 350? 19295 Views 14 Replies 11 Participants Last post by Steptoe , Jun 22, 2015 B brewcity Discussion Starter · Apr 15, 2010 Hi guys, Will double hump heads (casting 3917291) fit on a 1971 small block Chevy 350? Thanks for the help. 461 Casting Double Hump heads. It's two half-ovals connected by a straight bar-most easily described as. Complete “Double Hump” heads with “ Under­cover Porting “. Std bore block with casting number 3892657 and date E 2 7 Heads with casting number 3917291 and "double hump" casting mark with springs and valves Aluminum intake manifold with casting number 3890490 and Winter's casting mark Aluminum Corvette value covers Crankshaft Connecting Rods Aluminum. 50 exhaust while the bottom head is the performance version (325hp and higher) used on 67-68 327 applications with 2. Flo-Tek SBC 350 Chevy Aluminum Assembled 64cc Cylinder Head w/ Studs Guideplates Free FAST Shipping, Free Returns, Expert Tech Support Brand New $459. Chevy SBC Assembled Aluminum Camel Double …. While a 283 is a small cubic inch engine no matter, from the factory many 305`s received 160cc runner heads, and the bore of the 305 is smaller than a 283 but the stroke of the 305 is longer by. 30s @ 116, car showed about 390 Hp going down. 3782461x SBC Double Hump Cylinder Heads 327 350hp. Find many great new & used options and get the best deals for pr 68 SB CHEVY DOUBLE HUMP CYLINDER HEADS CAMEL BACK 3917291 302 327 350 CAMARO at the best online prices at eBay! Free shipping for many products!. Additionally, I found a wealth of info on the steps necessary to improve the Vortec with minimal porting. Complete “Double Hump” heads with “ Under­cover Porting “. 69 Best Selling in Cylinder Heads Genuine GM ecoTEC 2. cam with 350 and double humps??. item 3 SMALL BLOCK CHEVY Camel Hump Heads Part #3991492 SMALL BLOCK CHEVY Camel Hump Heads Part #3991492. (3927186) Chevrolet Small Block Double Hump Heads. (3927186) Chevrolet Small Block Double Hump Heads …. 99 13% off Buy It Now Free shipping Free returns 199 watchers Sponsored RHS Pro 235 Small Block Chevy Aluminum. Bolting up the 64CC heads brought the CR up 1. The famous double-hump cylinder heads. Double Hump Heads Which Head to run Cast Heads 4. Summit Racing Part Number: SUM-152123. Double-hump heads were offered up through the 492 head that was featured on the 350ci LT1 engine in the early ‘70s. 4 Bolt Main 202 Double Hump Heads $3500 I am willing to negotiate in person only! I also have the 4 speed transmission and linkage GM 3925661 available for $1500 Local pickup only do NOT contact me with unsolicited services or offers post id: 7619632567 posted: a day ago ♥ best of [?]. 3 compression with flattop pistons. Plus, the combustion chambers are a closed-chamber design and. 10065203: 1987 through 1995 350ci truck engines. Heads will fit on a. Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum!. The common double humps had 1. 480 which in real world figures isn`t a whole lot. A 350 with flat tops and 64cc double humps should make around 10:1 cr. Chevy 461 Double Hump Cylinder Head Comparison. Summit Racing™ Cast Iron Cylinder Heads for Small Chevy. Only a rare few applications had the 2. The History of SBC Cylinder Heads. JPG by pfz28, on Flickr The passenger side gave problems. In this video we discuss what is the best casting to start with for you. I've got a set of '67 double hump heads I ran on a 327 and they use the 13/16". The -416's are more smog shaped likw W/P's Torquers whereas the -601's are double-quenched and shaped a whole lot like the old -461 double-hump fuelie heads! Both good heads, but I lean towards the -601's. pr 68 SB CHEVY DOUBLE HUMP CYLINDER HEADS CAMEL …. Summit Racing™ Cast Iron Cylinder Heads for Small Chevy SUM ">Summit Racing™ Cast Iron Cylinder Heads for Small Chevy SUM. com: ICT Billet SBC Alternator/Power Steering Pump Accessory. None of my literature shows the 186 as a fuelie head, but only as a 69,70 302 and 350 head with 63cc combustion chambers. They were manufactured with larger intake and exhaust port volumes and valves for the period, and engines equipped with them had output ratings of more than 350 horsepower. 94 valves and 160cc intake runners. 1969 1970 SBC Z28 302 LT1 350 2. Shop Cylinder Heads at Summit Racing. Will double hump heads (casting 3917291) fit on a 1971 small block Chevy 350? Thanks for the help. Almost no compression and no power. Based on the iconic “double-hump” or “camel-back” (fuelie) cylinder heads of the ‘60s and early ‘70s—including the famed 461 Fuelie heads—the DHC 175 castings are modern aluminum versions with straight spark-plug locations and improved 60cc combustion chambers. To keep with the vintage design, the heads are available with 69. 2 compression with 64cc heads 3200 stall conveter 4. And cc them regardless so you know exactly how big their chambers are!! They both should have about 160 cc intake ports!!. 350 heads could have as large as 76 CC chambers! They all have way more chamber volume than 283 heads, Power Pack or otherwise. 9 results for 350 double hump heads Save this search Shipping to: 98837 Brand New $20. Are double hump heads on a 350 good? You bet. While a 283 is a small cubic inch engine no matter, from the factory many 305`s received 160cc runner heads, and the bore of the 305 is smaller than a 283 but the stroke of the 305 is longer by. 1985 camaro with swapped in built 350 small block Chevy with 327 #462 double hump heads. Which camshaft to a 350 with 461 heads My old 327 died on my last week but I have bought a 350 now, its a standard 3970010 block from 72 with original heads, I'm thinking of taking my 461 Camel hump heads from the 327 and put them on, but wich cam to choose? Want something fun with abit loopey idle and good power. safety tips; prohibited items; product recalls;. Been a long time, but if I remember right, flat tops (4 valve relief stock 350 piston) got you 10. The common double humps had 1. 60" exhaust valves, whereas most 461 heads came with a 1. Fuelie Cylinder Heads Launched SBC Performance. 1M views Double Hump Heads Which Head to run 68K views 3 years ago Golden Ticket or Fools Gold? Decoding Small. The smallest chambers the Double Humps had, were the 461X castings with 62 CC's; the rest had 64 CC's. I'm putting a new carb on the car, and in so doing changing plugs, fuel lines, filter, etc. The double hump heads were factory installed on all High Performance Fuel Injected and carbureted Chevrolet vehicles including Corvette, Camaro RS SS & Z-28, Chevelle. Assembled with 11/32" stainless steel valves, flat tappet springs, spring locators, steel retainers, machined locks, flat surfaced to your specifications. 1M views Double Hump Heads Which Head to run 68K views 3 years ago Golden Ticket or Fools Gold? Decoding Small Block Chevy. The 5/8" plugs are tapered above the threads and will not seal at the head on your double humps. 7L 350 906/062 PAIR STAINLESS STEEL VALVES NO CORE. Based on the iconic "double-hump" or "camel-back" (fuelie) cylinder heads of the '60s and early '70s—including the famed 461 Fuelie heads—the DHC 175 castings are modern aluminum versions with straight spark-plug locations and improved 60cc combustion chambers. 60 comp roller cam 245 duration, 600 lift Edelbrock Torker II Single plain intake Mighty Demon 750 KB pistons 11. Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum!. Will double hump heads (casting 3917291) fit on a 1971 small block Chevy 350? Thanks for the help. These are the famous “double hump” cylinder heads that initially found their way onto the high performance engines (302ci/327ci/350ci) in 1966 and 1967. com">cylinder heads 3890462. Complete rebuilt SBC Chevy 350 with performance heads - $2,800 (Mesa) © craigslist - Map data © OpenStreetMap Hawes near Guadalupe google map Complete rebuilt Chevy 350 engine with forged L31 Vortec pistons, new rings, new bearings, rebuilt 1968 casting number 291 double hump heads with new Z-28 springs, new retainers, new seals, re. These heads have double hump casting marks. Camel Hump Heads on a 350. item 3 SMALL BLOCK CHEVY Camel Hump Heads. For years, these were coveted castings in the performance community that were not. 00 or Best Offer Sponsored See search results that fit your vehicle Select Vehicle 1970 70 Chevy Corvette 350 Camaro Z/28 350 3927186 double hump cylinder head Pre-Owned 1 product rating $150. Pros: Good power maker, works with most production valvetrain/manifolds/shortblocks. Based on the iconic “double-hump” or “camel-back” (fuelie) cylinder heads of the ‘60s and early ‘70s—including the famed 461 Fuelie heads—the DHC 175 castings are modern aluminum versions with. 60 valves) when 350 head gaskets are used; An Authentic Aluminum Reproduction of Chevy’s Camel Hump “Fuelie” Heads. GM Chevy 350 small block from a 69 Vette. However, there are some 70 CC chamber truck heads with the Power Pack markings; stay away from those as well. None of my literature shows the 186 as a fuelie head, but only as a 69,70 302 and 350 head with 63cc combustion chambers. They're not worth much these days other than for restoration purposes and the odd oval track class/econo drag car. Find many great new & used options and get the best deals for 3782461x SBC Double Hump Cylinder Heads 327 350hp at the best online prices at eBay! Free shipping for. Phase 3: 300 hp The final upgrade netted nearly 300 additional horsepower over. Now, I had the perfect converter for it and gears. Two versions were made for the 327 and 350 engines, one with a larger valve package (2. 1969 1970 SBC Z28 302 LT1 350 2. 60 valves) when 350 head gaskets are used; An Authentic Aluminum Reproduction of Chevy’s Camel Hump “Fuelie” Heads. Complete “Double Hump” heads with “ Under­cover Porting “. 030-inch or larger bored out 283 block (2. Get the best deals for 350 double hump heads at eBay. Aftermarket double hump heads94 inch intake and 1. Double-hump heads were offered up through the 492 head that was featured on the 350ci LT1 engine in the early ‘70s. A quick search educated me that a set of later model Vortec heads are a better option. Might have a local buddy check out the heads. Also, most of the 186 heads were 1. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 5 product. These are the famous “double hump” cylinder heads that initially found their way onto the high performance engines (302ci/327ci/350ci) in 1966 and 1967. 350 bored. Put 350 76cc heads on a 305. i have run these several times, got them on a 350 30 over flat tops right now with com camcs xe268h-10 and 2-4's 605's edelbrocks, headers,pined studs,old school,the casting is very thin and holes gets into the water jacket ,just use studs with a good sealer and make sure the head surface is smoth so you wont be moving them after puting them. A 350 with flat tops and 64cc double humps should make around 10:1 cr. Runner Flow, SBC "Double Hump" Heads??. These heads got their nickname because of the raised identification shape on the each end. Reply Save Like 1 - 15 of 15 Posts T tmoble · #2 · Apr 15, 2010 yeah, they'll fit but if the engine has flattop pistons it'll ping itself to pieces with the high compression ratio that results. I wonder if any 71 Z28's have the. lift cam l :spank:l lift,valve lift,int. Get the best deals for 350 double hump heads at eBay. A 350 with flat tops and 64cc double humps should make around 10:1 cr. The “double hump” mark was found on numerous high performance applications such as the fuel injected 327 and the LT1 350. 7L V8 Designed & Manufactured in the USA 551576. comp 292 cam with double humps?. Free Shipping - Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet with qualifying orders of $109. 3927186 are good heads if you want high compression. 1985 camaro with swapped in built. How to identify camel hump (aka double hump) small block ">How to identify camel hump (aka double hump) small block. It's two half-ovals connected by a straight bar-most easily described as "two humps. 10065204: 1987 through 1995 350ci passenger car. 50 values, with some make shift accessory bolts. Complete rebuilt SBC Chevy 350 with performance heads. 350 with double hump heads - YouTube 1985 camaro with swapped in built 350 small block Chevy with 327 #462 double hump heads. item 2 1969 Corvette, Camaro 3927186 186 Cylinder Heads, 350 Double Hump 1969 Corvette, Camaro 3927186 186 Cylinder Heads, 350 Double Hump. i have run these several times, got them on a 350 30 over flat tops right now with com camcs xe268h-10 and 2-4's 605's edelbrocks, headers,pined studs,old school,the casting is very thin and holes gets into the water jacket ,just use studs with a good sealer and make sure the head surface is smoth so you wont be moving them after puting them in …. Thank you do NOT contact me with unsolicited services or offers post id: 7619155612. It also is alluded to have either 1. 7L 350 Vortec Cylinder Heads - Stainless Steel Valves & Springs - New Aftermarket. There are a lot of castings to choose from when running the Chevy Double Hump heads. Double hump heads - auto parts - by owner - vehicle automotive sale reno > for sale > auto parts - by owner post account Posted 3 days ago Double hump heads - $100 © craigslist - Map data © OpenStreetMap 350. So far, so good, but Im having the uneasy sensation that maybe I'll have a low compression ratio. This particular casting head was also available as an "over the counter" head from GM in straight or angle plug configurations. 56 gears 66 Impala Here is how my car sounds now Thanks See more Reply Save Like 6 68c10owner · #12 · Aug 25, 2004. 350 with double hump heads - YouTube 1985 camaro with swapped in built 350 small block Chevy with 327 #462 double hump heads. The famous double-hump cylinder heads. Accessory Drive Bracket Double Hump Heads 305 327 350 383 5. 9 results for 350 double hump heads Save this search Shipping to: 98837 Brand New $20. The ports may be a bit small for big street motors, but they are well suited for a class that usually requires a 500-cfm two-barrel. 00 or Best Offer Sponsored See search results that fit your vehicle Select Vehicle 1970 70 Chevy Corvette 350 Camaro Z/28 350 3927186 double hump cylinder head Pre-Owned 1 product rating $150. Heads will fit on a. These heads got their nickname because of the raised identification shape on the each end. 4l DOHC Cylinder Head Bare 12608279 (5) $350. 67 Camaro 4-spd, 350 with cam, headers, HEI, and double hump heads. 00 DH-UC "Double Hump" castings, bare, machined for screw-in studs, new guides & " Undercover Porting ". 00 DH-UC “Double Hump” castings,. Clearwater Cylinder Head - Complete 5. Double Hump Cylinder Head Comparison. Shop Cylinder Heads at Summit Racing. Pick Up Power with Your 350 Chevy Engine">Three Ways to Pick Up Power with Your 350 Chevy Engine. Looks to be a flat top piston with 4 bolt main. How to identify camel hump (aka double hump) small block chevy heads. 11K subscribers 493 67K views 3 years ago There are a lot of castings to choose from when running the Chevy Double Hump heads. Will double hump heads (casting 3917291) fit on a 1971 small block Chevy 350? Thanks for the help. 291,461,462 "double hump" or "camel back" castings that customers want. 60), and the other with a smaller (1. I am willing to negotiate in person only! I also have the 4 speed transmission and linkage GM 3925661 available for $1500. Vortec Heads Reader Guide. The famous double-hump cylinder heads. They are 64cc and will give you 10. I've over bored my '66 283. Chevy Double Hump Heads Specs. Complete rebuilt Chevy 350 engine with forged L31 Vortec pistons, new rings, new bearings, rebuilt 1968 casting number 291 double new bearings, rebuilt 1968 casting number 291 double hump heads with new Z-28 springs, new retainers, new seals, re-surfaced. Summit Racing™ Cast Iron Cylinder Heads for Small Chevy. In fact, we've brought back classic Chevy performance in a big way with these ready-to-run heads for small block Chevy. Std bore block with casting number 3892657 and date E 2 7 Heads with casting number 3917291 and "double hump" casting mark with springs and valves Aluminum intake manifold with casting number 3890490 and Winter's casting mark Aluminum Corvette value covers Crankshaft Connecting Rods. Chevy "Double Hump" Cylinder Heads. I researched the best head-porting tactics for small-block Chevy double-hump heads, and iron big-block Chevy rectangle-port heads. These were commonly called “Fuelie” heads. $5 Off Your $100 Mobile App Purchase - Get the App. And about the vacuumWell, my 55 still had the factory VACUUM operated wiper system and it had enough to run those. 350 with 327 double hump heads. After removal from the wrecking yard, the block was bored 0. This is all goodness, indicated by the green arrows. Hump Heads 3927186 186 NOV. 00 DH-UC “Double Hump” castings, bare, machined for screw-in studs, new guides & “ Undercover Porting “. They were manufactured with larger intake and exhaust port volumes and valves for the period, and engines. 350 hp double hump head are high compression ,if you are building it ,then you will have to make sure that squish/quench area is around. Making big power from a recycled 350 Chevy is as easy as See all 13 photos. These heads got their nickname because of the raised identification shape on the each end. com">416 heads on a 350??. do NOT contact me with unsolicited services or offers; post id: 7619155612. Featuring the famous double hump marking on the ends of the heads, the #3782461 and #3782461X heads used 1. 350, 383, chevy, heads, performance, rebuild, machineshop, engine, do NOT contact me. item 2 1969 Corvette, Camaro 3927186 186 Cylinder Heads, 350 Double Hump 1969 Corvette, Camaro 3927186 186 Cylinder Heads, 350 Double Hump. 350 CHEVY HEADS BEST AND WORST 1. Making big power from a recycled 350 Chevy is as easy as See all 13 photos. The identity can be further refined by viewing the casting number which is fo Most Chevrolet small block cylinder heads carried a cast in identification mark. Three Ways to Pick Up Power with Your 350 Chevy Engine. These are commonly called “Fuelie” heads because they were released with Rochester mechanical fuel. The common double humps had 1. 99 speedway_motors (282,963) 99. Combustion Chamber Volume (cc): 72. But that would also require more gear and stall. '73 350 motors (L48's) had dished pistons and 76CC chambers for 8. ok,im thinking about getting a 350 stock motor from a 68 gmc truck, puting 327 double hump heads,eldobrock intake preformer,elgin pro stock camshaft,with306-307int. Free Shipping - Trick Flow® DHC™ 175 Cylinder Heads for Small Block Chevrolet with qualifying orders of $109. 350 with double hump heads. 10065202: 1987 through 1995 350ci. Assembled with 11/32” stainless steel valves, flat tappet springs, spring locators, steel retainers, machined locks, flat surfaced to your specifications. These heads have 2. Vortecs should have no issue whipping a set of double bump heads given equal preparation. 030 and installed a pair of '67 Camaro SS 350 double hump heads with 1. Chevy 3917291 Heads 302 327 350 Double Hump Pair Camel Hump SBC Heads 291 D 10 7. Let me preface this by saying I feel pretty silly just noticing this tonight after owning the car a few months. Double-hump heads were offered up through the 492 head that was featured on the 350ci LT1 engine in the early ‘70s. 60 valves) when 350 head gaskets are used; An Authentic Aluminum Reproduction of Chevy's Camel Hump "Fuelie" Heads. double humps on my Chevy 350 motor from. 1M views Double Hump Heads Which Head to run 68K views 3 years ago Golden Ticket or Fools Gold? Decoding Small Block Chevy Casting Numbers for Budget. The runners have the same volumes of 161cc intake and 65cc exhaust as the listed 186 Fuelie heads. 030-over, honed, and decked in preparation for. L82 cam with 350 and double humps??. do NOT contact me with unsolicited. 040" over 283 engine, as well as the larger 327 Chevy. Intake Runner Volume (cc): 165cc. Think you have to scour the local bone yards to find a decent set of GM's old double hump or fuelie cylinder head castings? Not true. Double hump heads - $100 ‹ image 1 of 2 › QR Code Link to This Post. The '462' double hump heads are older than 1970, have the 1. Hump Heads 3927186 186 NOV. "Double-hump" heads were found on many of its high-performance engines in the 1960s and early 1970s. 460,mallory breakerless ignition. A 350 with flat tops and 64cc double humps should make around 10:1 cr. These were some of GM's best performance heads, some with straight spark plugs, others with angle spark plugs. 1985 camaro with swapped in built 350 small block. Which camshaft to a 350 with 461 heads. The most famous heads are the 461 and 462 heads that offer 160-cc intake ports, 64-cc chambers, and 2. I see the plugs are Autolite 26s and the newer, smaller 5/8 size. It was perfect in my 350. I am adding 461 double hump heads a edelbrock performer rpm cam (234/244 dur @. "Double-hump" heads were found on many of its high-performance engines in the 1960s and early 1970s. Can anyone tell me how much horsepower to expect?.