1980chevymAn

Well ive got a small block 400 bored 30 over , im wondering what kind of horsepower should be with these parts
Probe srs dish pistons
H beam rods
Scat steel crank
Pro comp 210 64 cc chamber 2.02 valve dual spring stainless valves
Pro comp crosswinds dual plane intake
Pro comp aluminum roller rockers
Deck shaved .020
Summit racing an 487/509 lift 303/313 duration
Holley 750 double pumper carb
High volume mechanical fuel pump and holley booster in tank
Mad street fire ignition box
Blaster 2 coil
Street fire plug wires
Msd distributor
Also would like to know what to set the rev limit too
Thanks for any input

ZONES89RS

iTrader: (25)

That advertised duration means nothing since different companies measure advertised different. What does the .050 spec of the cam look like?What do the heads flow? What is the compression?

1980chevymAn

Im putting it all together this weekend, its supposed to be 10.5 compression
The duraton at 050 is 234/244
Not sure bout the flow exactly just know it 210 cc runners 64 cc chambers with 2.02 valves

ZONES89RS

iTrader: (25)

Should spin a bit over 6000 RPM and may make 500ish HP.

1980chevymAn

K thanks i appreciate it

ironmanLS1

iTrader: (9)

No way 500 hp, subtract 100. For an SBC, too small a cam, too little compression, who knows about those heads and intake. Even if that head flowed well the cam is too small.

1980chevymAn

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Id hope more than 400 hp the people im getting it from got 425 hp using same parts minus ignition , a regular bore 350, smaller cam and the deck hadnt been shaved or nothin..... Just sayin lol well see tho

kpeterson

I did something similar a few years ago. 383, 233-241 @ .050 hyd flat tappet, AFR 195, 9.7 comp, RPM Air Gap, 850 Demon. It made 327 HP, 380 Ft-lbs, through a T56and open exhaust. It pulled to almost 7000. It was very pleasant in normal driving. I switched to a solid roller with about 10 more degrees. No dyno numbers but it feels better now but with a small loss in stop and go driving.

1980chevymAn

Its goin in my 1980 z28, ive got turbo 400 with shift kit and b and m 2800 stall converter so id say driveability shouldnt be a problem now traction might be its got the 342 posi trac but tires are to small i thing 235/ 60 15 rears need sumpin wider and more like a drag radial

ls13ater

iTrader: (3)

With the cam and arb I say 350-375 to the wheels