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#21
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But mine did not ping on the dyno yet still wanted more octane! Pushed a 3950lb TA to mid 12s @ 109 back when Jim Hands wagon was also just in the 12s.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#22
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Tom S has probably had lots of various classic high HP Pontiac iron head motors on the street that get driven hard-ask him about 10:1+ on pump gas.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#23
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#24
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My RAIV motor actually picked up way more with a Comp Magnum lobe 242/236 @ 0.050 on a 110 LS-but kind of a rowdy idle in a 400. That and smaller 1 3/4 headers got the car down in the 12 teens @ 110-111 mph all with 2.5" tailpipes per class rules. 1/4-1/3 race gas was enough to keep mph up and not drop HP with all the cams in the motor. After the 288/296 108 HFT swapped in a 304/312 on a 112 degreed at 110 IC for more V-P then 106 as UD suggested -same times. 288/292 SFT UD on a 110 -worse idle but pulled higher rpm.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#25
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...557 blocks don't not have them (valve chamfer @ top of bore)/ w/4bbl..FWIW.... irrelevant but just noting, here we have the best and worst 400 blocks
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#26
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Paul, My pleasure! This is an interesting thread.
Dennis |
#27
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It is always interesting to hear what other folks with RAIV motors run. Enjoyed meeting John Angeles and talking about his RAIV SS motor a couple of years ago when I was out with Tom S for the Donut Derelicts Saturday deal. Tom tossed me in one of his cars (Tempest) and said follow me! And I had to try and keep up!
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#28
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Thanks for the data point. We are still struggling with what to do with the SCR. I'm thinking 10 to 10.5. It would be nice to run pump gas but if it takes racing fuel to make the car run the way it should that may have to be the answer.
I have found two different RA IV cams which claim to be exact copies. There is the Blue print from Crane and a Melling SPC-8. Are they each true copies? One better than the other? Quote:
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