Fuelie Heads (Double Hump) 461
02-15-2019, 05:29 PM
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Tether Man
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Fuelie Heads (Double Hump) 461
Quick Question...Will fuelie heads (461) work well on my 283 single 4 barrel? Would any adjustments need to be made?
Last edited by dcamick; 02-15-2019 at 05:30 PM.
02-15-2019, 05:43 PM
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You'll lose a little on the compression ratio vs the 283 power pack heads.
Couldn't say for sure, one way or the other if you can feel the difference but my guess is, a small net loss vs the PP heads.
The heads are a bolt on.
Couldn't say for sure, one way or the other if you can feel the difference but my guess is, a small net loss vs the PP heads.
The heads are a bolt on.
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dcamick (02-16-2019)
02-15-2019, 05:44 PM
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There is no such thing as fuile heads. As the 461 head was used on every single chevy Sb
02-15-2019, 05:59 PM
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02-15-2019, 06:05 PM
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dcamick (02-15-2019)
02-15-2019, 06:06 PM
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dcamick (02-15-2019)
02-15-2019, 06:09 PM
#7
Some very good tech info in these vids
Last edited by roadster65; 02-15-2019 at 06:23 PM. Reason: add vids
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dcamick (02-15-2019)
02-15-2019, 06:13 PM
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02-15-2019, 06:17 PM
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So what casting number was used on low horse 327 and 283 engines?
02-15-2019, 06:50 PM
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02-15-2019, 07:07 PM
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The 461 head is more popularly referred to as the “Fuelie” head, because it was introduced as standard equipment on the 1962 327ci Corvette engine that was fed by a mechanical Rochester fuel-injection system. In some bench-racing circles, all double-hump heads are classified as Fuelie heads.
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This head WAS NOT, repeat, NOT used on any other engine until the 327 was introduced in 1963. The 61 Corvette 283 engines with fuel injection were rated at 275hp (hyd cam) and 315hp (solid cam).
Consequently, the double hump (461X) heads on the 1961 fuel injected Corvettes (they were NOT, NOT, NOT used on any other 1961 engines) commonly became known as "Fuelie" heads! Then in 62, when the 327 engines were introduced in ANY model of Chevy cars, ALLLLLLLLLLLLLLLLLL 327 engines with 300hp+ got double hump heads. But the fuelie head term had already become common. Thus, double hump = fuelie heads and that's how it came about.
I'm not sure, but I think this makes 3,467 times that this has been explained on this forum--------------------------as well as other forums.
02-15-2019, 07:19 PM
#12
Hi Tom, - I think we're both saying the same thing - the 461 Head became standard equipment on the 327 in 1962 - it's moniker Fuelie arose cause it was used in combination with the Rochester Fuel Injection system : Fuel - ie - the moniker Double Hump or Camel Hump arose due to the casting at the ends of the head - Regards GV
The 461X head with the double hump symbols on the ends------------- WAS FIRST INTRODUCED IN THE 1961 MODEL CORVETTE ONLY FUEL INJECTED ENGINES!!!
This head WAS NOT, repeat, NOT used on any other engine until the 327 was introduced in 1963. The 61 Corvette 283 engines with fuel injection were rated at 275hp (hyd cam) and 315hp (solid cam).
Consequently, the double hump (461X) heads on the 1961 fuel injected Corvettes (they were NOT, NOT, NOT used on any other 1961 engines) commonly became known as "Fuelie" heads! Then in 62, when the 327 engines were introduced in ANY model of Chevy cars, ALLLLLLLLLLLLLLLLLL 327 engines with 300hp+ got double hump heads. But the fuelie head term had already become common. Thus, double hump = fuelie heads and that's how it came about.
I'm not sure, but I think this makes 3,467 times that this has been explained on this forum--------------------------as well as other forums.
This head WAS NOT, repeat, NOT used on any other engine until the 327 was introduced in 1963. The 61 Corvette 283 engines with fuel injection were rated at 275hp (hyd cam) and 315hp (solid cam).
Consequently, the double hump (461X) heads on the 1961 fuel injected Corvettes (they were NOT, NOT, NOT used on any other 1961 engines) commonly became known as "Fuelie" heads! Then in 62, when the 327 engines were introduced in ANY model of Chevy cars, ALLLLLLLLLLLLLLLLLL 327 engines with 300hp+ got double hump heads. But the fuelie head term had already become common. Thus, double hump = fuelie heads and that's how it came about.
I'm not sure, but I think this makes 3,467 times that this has been explained on this forum--------------------------as well as other forums.
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dcamick (02-16-2019)
02-15-2019, 07:34 PM
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Hi Tom, - I think we're both saying the same thing - the 461 Head became standard equipment on the 327 in 1962 - it's moniker Fuelie arose cause it was used in combination with the Rochester Fuel Injection system : Fuel - ie - the moniker Double Hump or Camel Hump arose due to the casting at the ends of the head - Regards GV
02-15-2019, 07:39 PM
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02-15-2019, 07:59 PM
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Correction :
The 461 head is more popularly referred to as the “Fuelie” head, because it was introduced as standard equipment on the 1962 327ci Corvette engine that was fed by a mechanical Rochester fuel-injection system. In some bench-racing circles, all double-hump heads are classified as Fuelie heads. Although it’s a technicality, the Fuelie and double-hump generation launched such a cult following, that even to this day, there are small-block loyalists still believing the double-hump head is the best choice for the original Gen I platform.
The double-hump family actually consists of many different casting numbers that GM produced for different engines in the ‘60s and ‘70s. The castings are usually identified by the last three numbers, so 3782461 cylinder that was produced originally for 327ci engines would be better known simply as the 461 head. Its replacement, the 3890462 and 3891462 castings, are best known as a 462 head. Collectors and racers do have to be careful when looking at 462 heads. Normally, GM didn’t reuse the last three digits when assigning casting numbers; however, 462 was used on at least six castings.
Other popular double-hump castings include the 291 (3917291), 292 (3917292), 186 (3927186), 187 (2927187), 414 (3973414) and 492 (3991492). There was also a race version of the 461 known as the 461x. It featured 172cc intake runners and a slightly larger combustion chamber.
The 461 head is more popularly referred to as the “Fuelie” head, because it was introduced as standard equipment on the 1962 327ci Corvette engine that was fed by a mechanical Rochester fuel-injection system. In some bench-racing circles, all double-hump heads are classified as Fuelie heads. Although it’s a technicality, the Fuelie and double-hump generation launched such a cult following, that even to this day, there are small-block loyalists still believing the double-hump head is the best choice for the original Gen I platform.
The double-hump family actually consists of many different casting numbers that GM produced for different engines in the ‘60s and ‘70s. The castings are usually identified by the last three numbers, so 3782461 cylinder that was produced originally for 327ci engines would be better known simply as the 461 head. Its replacement, the 3890462 and 3891462 castings, are best known as a 462 head. Collectors and racers do have to be careful when looking at 462 heads. Normally, GM didn’t reuse the last three digits when assigning casting numbers; however, 462 was used on at least six castings.
Other popular double-hump castings include the 291 (3917291), 292 (3917292), 186 (3927186), 187 (2927187), 414 (3973414) and 492 (3991492). There was also a race version of the 461 known as the 461x. It featured 172cc intake runners and a slightly larger combustion chamber.
Last edited by roadster65; 02-15-2019 at 08:03 PM. Reason: bold
02-15-2019, 08:05 PM
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02-15-2019, 08:18 PM
#17
No Rochester Fuel Injection system installed, no "Fuelie" heads fitted - simple
02-15-2019, 09:18 PM
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You wrote:
- the 461 Head became standard equipment on the 327 in 1962 -
It was installed on the FI 327, the 340 HP 327, and the 300 HP 327. It was NOT installed on the 250 HP 327 so it was NOT "standard equipment on the 327".
And you erred when you wrote:
The 461 head is more popularly referred to as the “Fuelie” head, because it was introduced as standard equipment on the 1962 327ci Corvette engine that was fed by a mechanical Rochester fuel-injection system.
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jerry gollnick (02-16-2019)
