HP/TQ Guesses! (just for fun)

[Coltrane]

So I just got my motor back from the shop and the ball is rolling on getting this thing back on the road. I figured it'd be fun to try to guess what power this motor will make! Once it's in the car and running I'll be taking it to a chassis dyno so I'll share the exact numbers once I have them.

Specs:
SBC 355 (hydraulic roller), roughly 9.7-1 compression w/ forged rotating assembly
AFR Eliminator 195 heads
Custom comp cam .602/.608 lift, 235/243 duration, 110 lsa
Holley 750 double pumper
Edelbrock rpm air gap intake

For those wondering, it's going in a 1985 Monte Carlo with a built 200-4r trans, 3200ish stall, 3.73 gears (for now - I will need to do track testing with 28s to see if I need to up the gear ratio)

 

[DROLDS84]

476/502

 

[Coltrane]

476/502

That'd be awesome! I'll be putting it on a chassis dyno so we'll have to do some math to see who's closest for the flywheel #s 😂

 

[Streetbu]

395 at the tire

 

[bracketchev1221]

I would guess its a safe 425-430 hp combo. Enough to go fast enough if you can hook it.

 

[scoti]

I would guess its a safe 425-430 hp combo. Enough to go fast enough if you can hook it.

440-ish @ the crank.

 

[NJ Longroof]

457hp @ the crank

 

[olds307 and 403]

I would say 479 HP and probably 456 TQ at the crank. Hell rogue_ryder's Olds 358 with so so Procomp heads, smaller 221/229 roller cam and same compression made 436 HP and 471 ft-lbs with a 670 cfm carb. If old sbc Betsy doesn't beat both those numbers by a good margin, the HP especially, time shoot it dead behind the barn.

 

[Coltrane]

I would say 479 HP and probably 456 TQ at the crank. Hell rogue_ryder's Olds 358 with so so Procomp heads, smaller 221/229 roller cam and same compression made 436 HP and 471 ft-lbs with a 670 cfm carb. If old sbc Betsy doesn't beat both those numbers by a good margin, the HP especially, time shoot it dead behind the barn.

😂 I'll make sure to print this comment out and tape it to the motor when it's on the dyno - it needs to know it's under pressure!!

 

[SoFloG]

410 to the tires