1st thread - Stuck with a 307: performance suggestions?

Quote:

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Originally Posted by t0oL

gears. depending on the ratio you have in the car now, swapping out a reasonable rear end ratio versus a sedan ratio would give an impression of way more hp than you would get out of bolt on engine mods

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Best answer. Gears. No matter what else you do to the car, you'll need gears and rear suspension. Research mini-tubs so you can determine how much tire you can fit into the car, then snag a 9" Ford diff and set it up to bolt into the Chevy. Install an aftermarket limited-slip unit such as Detroit Locker, Auburn or whatever along with some good axles.

Nothing wrong with a good set of leafs, tires and Caltrak bars down to 10 flat.

This is where most newbies make their biggest mistake, starting at the wrong end of the car. First thing they want to do is drop in a huge cam that doesn't match the static compression ratio, converter or rear gear. The car turns into a turd and they're on here crying the blues and asking for help. Leave the motor alone and work on setting up the rear of the car, then install a converter based on the cam you will use, then start on the motor.

You can build them 307 Chevys to run real strong . I built one in a 1973 Nova . Stock Cast Pistons 40k on the Block not touched . New cam intake 600 holley headers and a set of 1.94/1.50 Fuelly Heads . 3000 Stall and 4.10 Gear ran High 13's on Street Tires . It's not always as Hard to do as some will tell you . If you want to build that Engine I will help you . And the 600 Holley was to small . I installed a 750 Q-Jet Later but did not get the chance to Run it at the Track . You could tell it was much stronger with the Bigger Carb . Every Car I raced and Beat had a Larger Engine .