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04-07-2018, 11:35 AM | #101 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
L-98 Corvette was an angle plug head too I believe---FED 387
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04-07-2018, 02:21 PM | #102 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
But the replacement heads listed are for 62-70 year models.NO angle plug heads during those years.
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04-07-2018, 04:50 PM | #103 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
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04-07-2018, 06:09 PM | #104 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
I'm still perceiving Stock Eliminator through 1980's glasses, because that's what I was most comfortable with. Headers, converter, ring & pinion, and a 9" tire...on a car with a VIN number. Not saying it's better or worse, just saying I'm somewhat stuck in that perceptual paradigm.
But whether I'm comfortable with it or not, Stock has moved on. Just like stock moved on from the '60s, to the '70s, to the '80s, all the way through today. I still find Stock Eliminator fascinating, but it is more and more becoming a class that is difficult to explain to lay people, which I think hampers it's value as a financially viable spectator commodity. Ultimately, I think that Stock is going to die, and when it does, I will very much miss it. It is (and was) a beautiful class. Last edited by 6130; 04-07-2018 at 06:11 PM. |
04-07-2018, 07:20 PM | #105 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Then NHRA's rules for Super Stock heads "Grinding and polishing in combustion chamber permitted. Welding and/or applying epoxy in combustion chamber prohibited. Spark-plug hole must maintain the stock location, size, and angle as machined by the OEM; spark-plug adapters prohibited." can just be ignored. Have you seen the combustion chambers on the Jones heads or the Edelbrock heads? I guess everybody is satisfied to be a frog in a pot with the fire on high.
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04-08-2018, 03:07 AM | #106 | |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Here we go again!
Quote:
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04-11-2018, 10:11 AM | #107 | |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Quote:
But that was a Mopar, not a Chevy !. |
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04-11-2018, 11:28 PM | #108 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
How much are angle plugs worth on a SBC SS'er ? Not looking for conjecture.
Real world only, please.
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04-12-2018, 06:44 AM | #109 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
Bill Jenkins always said 10-12 HP. Chevrolet engineers said it helps more with higher compression ratio and dome in the combustion chamber, but that it was about 10 hp on flat top pistons (350 cu in, 10.5 compression). I have only seen an un-scientific test once on a 377 dirt track engine when a pair of ported 461 heads were replaced with unported 292 heads and the difference was 22 hp.
If high compression benefits more, then consider that all blueprinted 62-70 327 and 350 flattop pistons engines run between 11.5 to 12.0 compression.
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04-12-2018, 08:42 AM | #110 |
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Re: Aftermarket/Replacement Cylinder Head Rule Change
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