Quote:

Hi guys

I was excited last week took the car to the dyno to see what result happened from my changes to the car.

Ok here is car last year
4040 with me in it
440 40 over 9.5:1 compression ratio
440stealth heads
comp cam XE 268 degreed to 107 LSA
770 street avenger carb
street dominator intake
shorty style headers
727 2600 stall converter
3:23 gears
uncapped headers thru 2.5 inch cutouts

HP 327
Torque 404

Ok tonight

4040 with me in it
440 40 over 9.5:1 compression ratio
440stealth heads
comp cam XE 274 put in straight up at 110 LSa
750 Holley Double pumper 76/78
street dominator intake
shorty style headers
727 4200 stall converter
3:91 gears
uncapped headers thru 2.5 inch cutouts

HP 311
Torque 334!

ok, I'm down 16 HP and 70 lb of torque!

It doesn't make sense!

The car runs beautifully, pulls strong now all the way up to 5800 rpms! It is a blast to drive. It comes out of the hole like its on fire now.

Why would I be down?

Thanks for any info

Ok for the record temp and humidity for pretty similar!

Take it away fella's

Mike




If it were mine, I would have gone with around 10.7.1 Compression with the Aluminum heads & The XE284H or 285HL.

76 jets are a bit fat on a standard 750dp. IMO, I'd start off with 72/80-82 & go from there, I ran 74/82 in my PF 750dp, of coarse yours may very.


75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU