Originally Posted By rb446
Well to do a bit bench racing for you, your 7.32@95.3 1/8th is approx an 11.6@118 1/4. I am having to guess the weight of your car at 3800 with you in it? so that gives you currently 511fly hp with those 906 heads.

Bolting on those sidewinders at 84cc will drop your comp a bit if you don't mill them to 79cc but no matter, if they really flow 290cfm I would think conservatively you would get around an 80hp increase over stock 906's which should give you 590 fly hp, that in a 3800lb car should run around 6.80@100mph in the 1/8th, or 10.84@124 in the 1/4. Only numbers but the Wallace Calc has been pretty accurate for my cars against my 1/4 mile timeslips. Good luck with it.


I think I'll stay with the cam and mill the heads a little to get them down to 78cc (similar to my 906's) so it will be very interesting to see how much just the heads do.
I have talked to a friends friend with a flow bench and he's interested to see how much we can improve the heads with some work. I have already ported one head on the exhaust side but we can compare it with the unported. My problem is to find the time to go there since he is three hours away...
Thanks for your help!


70 W100 Power Wagon. 318 4-spd
70 Sport Fury 440 2dr HT
71 Duster 340
71 Charger Super Bee - 383/727
72 Charger "Sabotage" - 440/727 - Street/Strip
78 Warlock in beautiful patina