So what could be done to a 77 Trans Am witha 400 engine?

Like intake, carb, etc.,

 

Um... a ton of stuff. What kinda' heads does it have? It depends on how fast you wanta go.

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Cherry Black '76 Firebird,400,COMPXE268 ADV 2*,6X-4'S (8.4:1),PERF-RPM INTAKE,2.46's,1,5/8"headers, 2.5" duals, TH350...
2002 Cavalier, daily driver, no mods. 17.337@79.80mph@3500'

 

Headers and full dual exhaust, good tune up, cap/rotor, plugs wires, fast timming curve, set total timming to 40 and you will be running good. Good basics.

 

In order to get the car off of it's ***, you need a cam, if not do something to the heads as well. My car went 15.2 with headers and exhaust + K&N/open scoop, as opposed to low 16's w/ stock exhaust.......The cars are SEVERLY detuned.....The '77's have like 7.7:1 compression, so getting a cam that will work on that low compression will be hard to find; unless it was a damn 350 chevy.....When I was looking for a cam for my stock heads and compression (8:1), all I saw was a high energy 252H or 260H cam.....If you have the $, try to mill the heads or get different pistons to raise compression, then get a cam, and definitely an edelbrock performer intake/carb combo. The stock exhaust, cam, heads, intake, and carb all suck. Replace as many as you can. If you can't do anything to the heads, get a small cam, it will be better than stock, and get the intake/carb and exhaust to go with it. True duals with headers, and no cats. Open up the scoop as well; it made a very noticable difference on my car. Basically the only free mod for this car.

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1978 Trans Am, will be alive soon, engine being rebuilt.....I'll get out of the 15's someday... http://www.cardomain.com/member_page...=225185&page=1