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| Pontiac - Street No question too basic here! |
| View Poll Results: Which engine with stock heads? | |||
| '69 400 with 62's |
   
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15 | 32.61% |
| '74 455 with 4x's |
  
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31 | 67.39% |
| Voters: 46. You may not vote on this poll | |||
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#1
11-11-2006, 02:41 PM
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The 400 w/62's will be too much compression for pump gas without the right cam to bleed off some cyl. pressure (my 400 w/670's was the same way but i ran a RAIV cam which bleed off cyl. pressures.). Even with the right cam you will need some decent gears and conv. (if auto) to have this thing perform. I would personally put in the 455, even with low comp. it will have torque (more torque = more fun). It will be nice to run with 87 gas too.
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Derek B. Current best: 11.97@110 1.65-60' !!! '74 ventura,  (Fired july 14/06) '74 462 4-bolt (9.5-1), SCAT, Ross, T-II w/850DP (shaker455), TH350, Conti 10'' 3800, Supercomps, Magnaflow, 3'' Pypes, 3.73's, 28x13.5-15 ET streets.1970 Beismeyer 17' flatbottom vdrive, 11.8:1 455P, ported heads, dual Qjet tunnel ram. 
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#2
11-11-2006, 02:55 PM
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Yeah i forgot to mention though that the car has 3.73 gears.
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1999 Trans Am Ws6 Slp Lid, K&N, Smooth Bellows, Ls6 intake, Spec Clutch, Spec Alum. Flywheel, Spintech Cat back. 1970 Firebird Esprit 455 Pro Street project |
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