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I ran a 15.77 at our altitude with my mods, and I have highway gears in it still. The engine had 143,600 miles on it when I did the mods in the sig. If you do the work yourself, $2500 will come close to covering it - I only paid $125 for the torque converter, $150 for the ZZ3 take-off parts, $150 for the dual-snorkel pieces. Everything else was Summit/Jegs/Competition Products regular prices & shipping.

With mods like mine, gears, and traction, I don't see a problem with mid- to low-14's closer to sea level. A 350 makes 13's pretty easy, though.

What does mom think?

 

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Well, you may be happy. How long is the only question...

Since most of what you have to do to the 305 to make it fast would have to be done to a 350 as well (headers/exhaust, intake, cam, and often heads), it is possible to be faster with a 305 for the same money spent than with a 350. But, ultimately, the 350 will always outrun the 305 with the same modifications made.

Chevy High Performance magazine did a series of articles starting last year called "My Generation Camaro", with the goal of getting into the 13's on a budget. They really screwed up with their cam selection (and header choice, IMO), found out they had a cracked block, ended up with a rebuilt 305 for a lot more money than they wanted to admit, and still needed NOx to get into the 13's. Avoid their mistakes, and you'll be happy with the results.

For awhile, at least...

 

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let me tell you something
my friend vinny has a 84 firebird se with a 5 speed and it is all stock except for the headers and exhaust and he is very quick i would say with that car he is runing like 15.4 around there because he keeps up with me

 

Well, if you've got the room, why not keep the low mileage motor and put it in storage.. then drop in the other motor you wanted.

That way, should you ever decide to sell the car, you can sell it with the original motor.

Todd