Am contemplating a 170 build with a 3.8 Buick supercharger with a Quadrajet carb, I have a 5.38 rear axle, an overdrive 4 speed trans, would be installing the 5/16 oversize valves and installing longer rods with 2.5 turbo pistons, six into one header. This going into a uni-body built t-bucket so itll be very light, my question is, would a 75' style cam be appropriate and what rod to use to achieve high 7 to 8.5 compression ratio.

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Advise should be taken as ongoing, that way, when you get to realizing what you are doing you can include yourself.

For a 170, just use stock crank, rods. I would use a forged piston of stock specs. The compression ratio should be about 8 to 1. The Buick turbo MIGHT be a little large for a 170.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Sounds good; Ill plan on doing up the crank, shot peen rods and blueprint ect. I was thinking blower instead of turbo, besides going to a carb shop is there much in the way of special mods?
I read about the .078 hole in oil pump on the crank scraper website, how bout a blower cam?

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Advise should be taken as ongoing, that way, when you get to realizing what you are doing you can include yourself.

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besides going to a carb shop is there much in the way of special mods?
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Yep, it depends if it going to be blow-thru or draw-thru!

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There's no such thing as too much cam....only not enough engine!

besides going to a carb shop is there much in the way of special mods?
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Yep, it depends if it going to be blow-thru or draw-thru![/quote]
Draw through, I read that forced air engines like duel profile cams also, my plan is to use the last three gears of the o.d. 4 spd. with the low axle, not concerned about freeway, and use the engine with mild boost but build it very solid, nitride, shot peen, cryogenic dip etc.

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Advise should be taken as ongoing, that way, when you get to realizing what you are doing you can include yourself.