It just seems like a little horsepower for such a nice sized motor.
2007-04-26 14:52:46 · 5 answers · asked by Apple Sauce Stevens 1 in Cars & Transportation ➔ Car Makes ➔ GMC
there are lots of little things you can do, but it all boils down to this: Let her breathe! Change the carb (get rid of the smog crap), headers & dual exhaust. If that isn't enough power for you, you'll need to get inside. Clean the intake / exhaust ports, gasket match the intake manifold, and more. As has been said, 450+ is not even hard to achieve with a 455 in full performance trim!
2007-04-27 03:34:47 · answer #1 · answered by InjunRAIV 6 · 1⤊ 0⤋
These motors have been de-tuned and have had their compression ratios taken away along with a ton of pollution crap that is designed to cut the breath from the motor. You would have to jerk the motor out and do a complete tear down. Purchasing bigger pistons and then a thorough overhaul will follow that might include some machine work to the crank, cam, and heads. Remove all of the pollution stuff and rework the vacuum harness to exclude vacuum leaks and such. A distributor overhaul would be next which could include some weight changes and a new vacuum pot. I would overhaul the carb being sure to set the float to spec. and then set the idles and mixtures for the new hot motor settings. Big job but a beautiful car when finished. Good luck.
2007-04-27 05:16:33 · answer #2 · answered by Deano 7 · 1⤊ 0⤋
1975 Pontiac Grand Prix
2016-09-30 01:54:00 · answer #3 · answered by ? 3 · 0⤊ 0⤋
1975 Grand Prix
2016-12-12 03:43:43 · answer #4 · answered by veloso 4 · 0⤊ 0⤋
70's & 80's cars had large engines for their torque. I dont think horsepower was such a big deal back then becasue u didnt have all the little Civics that rev to 9,000 rpm around. You can probably ad about 10% to that 200hp so its probably 220, but the ethanol in the gas takes away about 3% of that. You're motor probably makes over 350 Ft/LB of tourque & thats what really hauls the a$$ around. But I understand u wanting to add some power but not build a race car.
2007-04-26 16:04:19 · answer #5 · answered by Willis C 3 · 1⤊ 0⤋
Grand Prix's are merely regular vehicles with some sporty overtones. not quickly, merely adequate capacity to get round from element A to point B without being underpowered. also really solid with the GM 3800.
2016-12-04 22:40:52 · answer #6 · answered by ? 4 · 0⤊ 0⤋
i own a repair shop,and its a very little amount of horse power for that size of an engine,you have to tear in to it and go deep starting with pistons,and the whole works,but in the final stage of it you can easily get 450 from it,been there and done it is the reason i say 450 that's what a friend of mines is running now,after i got it back together,and it runs strong,but it cost to do it ,i believe we had around 2 thousand just in parts for that one,but it was worth it,good luck hope this helps.
2007-04-26 17:25:43 · answer #7 · answered by dodge man 7 · 0⤊ 1⤋
Get rid of all the pollution control crap, get a bigger intake and exhaust fits and let er rip.
You could conceivably get 350+ HP out of it with some other mods.
2007-04-26 14:58:29 · answer #8 · answered by mar m 5 · 1⤊ 0⤋
ENGINE not Motor, besides if you found out, some one would wrapp the car around some big tree
2007-04-26 14:57:36 · answer #9 · answered by duster 6 · 0⤊ 1⤋