jonny_sanchez99

Just finished my 355 build and was wondering how much power I would be makeing for my 91 camaro, any input is much appreciated
specs
350 bored 4.030
4 bolt main
10.5.1 compression
Blueprint h8002k
195 intake
75 exhaust
@.500=252 intake
@.500 =207 exhaust
2.02 valve intake
1.60 valve exhaust
64 cc chamber
Comps cam xr276hr
Duration 224/230
Lobe seperstion =110°
Intake centerline = 106°
Lift .502/.510
1.52 rocker arms
Holley stealth ram
Stock throttle body
2300 stall converter
What do y'all think this motor will be putting to the rear wheels ? And does anyone have any experience with the XR276HR cam?
Thank you

Orr89RocZ

iTrader: (20)

midias

With a perfect tune I would guess 320ish to the wheels assuming you get your deck height and valve train geometry perfect. More realistically 290ish

jonny_sanchez99

My goal was to reach around 400rwhp any ideas how I could achieve that goal?

Orr89RocZ

iTrader: (20)

midias

Either much larger cam and more RPMs or less compression and more turbo

JTome91z

Orr89RocZ

iTrader: (20)

jonny_sanchez99

If I would fully port the Holly stealth ram and also used 1.6 rocker arms what kind of gains would I see ? And I fully ported the heads aswell would it make a big difference?
Thank you everyone for your input much appreciated.

sofakingdom

iTrader: (1)

For 400 at the wheels you're going to need around 500 DEPENDABLY at the crank. Not "maybe", not "it might", not "with a great tune", not not not not not. 500 true actual proven measured real-world HP at the crank.

I'm not seein it happenin with the SR. That intake is usually good for around 425 - 440 CRANK HP on anything like a streetable combo. Experienced people can sometimes sqweeeeeezze a bit more out than that but it's not the kind of thing to bet on if the extent of your experience is reading Internet posts. Plus, the bottom end becomes a MAJOR consideration. "350 4-bolt main" with no further details shows how little thought, and budget, you've put into that part of it.

150 shot of nitrous would be the eeeeeeziest and most nearly certain way to get there. Don't bet on it lasting too many passes like that though.

jonny_sanchez99

The bottom end is all brand new Eagle specialty steel crank and new rods, pistons, and rings so the bottom end is all rebuilt to handle the extra power much appreciated for the help and input.

Orr89RocZ

iTrader: (20)

IROCZman15

iTrader: (25)

throw on a 100-150 wet nitrous shot for $900 and you will be where you hoped to be

jonny_sanchez99

Yes the whole motor is all assembled already.

GOTCHEVY

iTrader: (1)

kaos420

almost the set up im running just bigger injectors an bigger throttle body an lil different cam that im using 345 hp

Thirdgen89GTA

iTrader: (5)

I agree that you need better heads and a higher duration cam to hit 400whp all day long. But honestly I don't think you'll be disappointed with mid 300'x to the wheel.

Honestly you might be more disappointed with it actually. The greatest and worst thing about a relatively high overlap camshaft is they love to Rev. They are generally ornery and sluggish at street speeds (think residential 25mph roads) and simply amazing when you can finally open the taps.

They usually put the power curve too far out of the fun zone on the street.

I honestly dislike driving the car even semi-daily. I hate being stuck in traffic or at stop n' go lights. Unless I have clear highway ahead of me I don't want to be behind the wheel. I constantly find myself looking at 383 and 396 short-block packages to bring the power curve down.