Hey:
I'm preparing to rebuild my LT1 in my '94 Trans AM and I have some questions concerning how I should go about the doing the rebuild. Ok so the current motor has over 190,000+ plus mi, so with that amount of milage on the engine I'm looking to do a total rebuild. Now I've checked a few rebuild kits on part sites like summitracing.com and I'm assuming that the purpose of a rebuild kit is to get my engine back up to factory spec. But heres where the question(s) come in. A LT1 is said to crank out about 275 hp stock, what can be done engine wise to bump the hp output to say 330-350? Any and all suggestions are welcome.

 

 

CAI, headers, Cat back and you are close. Some porting and a cam since you have it apart and you are beyond those numbers.