[raj]

Originally Posted by Peti972

i didnt know you could do that...thanks for the heads up! i was gonna get a weak ass 403 but now im gettin a 455...only thing is which one is the better option Olds. or Pontiac 455??

Depending on what your performance goals are, the 403 can be built to be a pretty stout engine. There's a guy on Realoldspower.com who swears by them. He has a 403 powered 1984 Hurst Olds and claims it will run low 12 second 1/4's. Here's a link:

http://www.realoldspower.com/phpBB2/...pic.php?t=2620

Remember the 455 Olds is 2" taller than the 403. It, of course, can be built pretty stout as well but I'd definitely check into shaker hood clearances and so on.

I'll respectfully disagree with Mr. P Body. Both engines have their strengths and weaknesses. Olds don't necessarily cost more to build, but there's definitely more after market support for Pontiac. Depends on the car. That being said, to answer your question I'd go with a Pontiac for a Pontiac car, but I can tell you a 455 Pontiac engine is going to run you double what a 455 Olds would to buy. There's also something to be said for going with an engine that's similar to the original and not have to deal with all that change over crap.