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#11
02-15-2011, 11:03 AM
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Right on the dyno we made 424hp/465tq with a Pontiac 400 with unported #16 heads. The compression ratio was just over 10 to 1, and we used a 228/235/112 camshaft. That engine was using a stock iron intake and Q-jet.
KRE did the same build with a set of their 65cc aluminum "D" ports and made 440HP (unported heads). Drop the same engine back to 9.5 to 1 and put in a smaller cam and you'll be hard pressed to make 400hp, probably closer to 350-375. One of our customers did the ever popular 400 cid with heavily cut 6X heads and the XE274 camshaft and made 380hp and close to 425tq. Still PLENTY of power for a decent burnout in a hard right hand turn leaving Dairy Queen! As you can see, there is a modest power difference with more compression and the right camshaft......Cliff
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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