How much horsepower do you think this motor will make?

[slowolds]

olds 425 block.......bored to 432, stock forged crank,stock rods,forged pistons,crane cam flattappet 536intake/560 exhaust 238/248 [email protected].
1.6 rockaer arm ratio. heads are ported and polished C's,3angle valve job and the cross overs are filled. topped with a torqer 455 intake and a warmed over holley 850 mech secondary carb

car will be spraying a 125 shot for the first dyno tune


Transmission is a powerglide with 3500 stall, and it has 3.73 gears


It will be ging on a mustang dyno


anyone want to take a guess on rwhp on and off nitrous?
🙂

 

[thebaron]

http://www.hotrodders.com/forum/425-old ... 41740.html

 

[slowolds]

The car made 635 horsepower and 702 lbs/tq at the crank 😀

 

[ryanwitski]

wow that is sweet!! Makes me want to start an engine project too. lol 🙂 was that figure with the 150 shot?

 

[slowolds]

went back on the dyno with my new carb and it made 535 HP the rear wheels on a 150shot allmost sh*t my pants when I stepped on it and the car jumped and made 648 lbs/ tq at the wheels at 3100rpm