How much boost will this 454 combo handle?

[dhardison]

I'm REALLY interested in installing a turbo OR supercharger in my '70 Nova, but my current 454 is a 12.5:1, solid cam motor which I'd prefer not to disassemble. A friend has a nearly stock 454 which I can get for a good deal. My question is, considering the following configuration how much boost will this combo safely handle? I'd replace the oval port heads, intake/carb and cam, but the short block will be left alone. My main concern is the presence of a lot of cast parts and a 2-bolt main. I'd like to end up with a combo that'll make 500-600 boosted horsepower (on a budget of course).

454 w/.030 overbore (balanced and bluprinted)
Cast crank with standard mains and rods
Cast pistons w/8.0-1 compression (NOT forged)
Two bolt mains
Stock iron oval port heads (to be replaced - best options??)
Old, old aluminum intake for weight savings only (to be replaced - best options??)
Crane 266 hydraulic flat tappet cam (to be replaced - best options??)
Roller tip rockers
Stock 6 quart oil pan
63K miles since overhaul (I'll probably change the bearings)

Thanks,
Dan

[dhardison]

Come on guys, "hep a brutha out". TTT!

[Matt]

I'd worry about the cast pistons, and crank. The heads should be ok, and a mild cam with good lift and no overlap would be best.

8psi would probably be ok if I had to pull something out of thin air.

[my72vette454]

I had about the same setup last spring and eventually broke ring lands off a piston. Lasted long enought to get it tuned and have a little fun with it. I was running 11 to 15 lbs boost. It might last awhile on 8 lbs boost, just be careful with timing and run good gas.

Mike

[ProdigyCustoms]

Pistons are trouble, cranks are stronger then you may think. Heads will be ok. 2 bolts are fine. The P1SC will barely make enough wind to do anything on a big block, think D1SC.

You could probably put 8lbs on it until you can up grade the crank to factory steel and 7/16 rods, or better. Then you could go 15LBS

[dhardison]

Thanks guys! What kind of HP do you think it'll put out @ 8lbs of boost?

Dan

[Matt]

haha, enough

I'd think somewhere in the 600-700hp range if I had to guess.

[ProdigyCustoms]

With the right cam, yeah, 600 to 700. Next question I am sure is what is the right cam. that will need to be decided with your blower order.

[dhardison]

Haha you read my mind about the cam question Frank..... I've looked around a bit but cant' find any pricing on a DISC blow-through carb kit (non-intercooled). Anyone have a feel for the price of the kit?

Thanks,
Dan