91 GTA Clone with 5.3 T56
11-03-2010, 08:30 AM
#1
91 GTA Clone with 5.3 T56 So i pulled the trigger on a 5.3 T56 swap into my 91 Formula /GTA Clone a month ago and im about to buy the engine this Friday (5.3 L33) I chose the L33 over the LM7 for the obvious bump in power, wieght savings and heads. I just wanted to hear some suggestions from you on what sort of starter performance parts you would put into this? I'm looking for a mild 325-340 rwhp since its a semi-daily driver 9 months out of the year. Again, mild performance. I already have an idea of what to put into it but i thought some other members might have some gains i can get out of this engine that i havent thought of. Thanks!
11-03-2010, 10:13 AM
#3
I have seen videos of 5.3's w/turbos and they are quite impressive, however i think i may stay away from boost for this swap as i dont really need it for what the car is being used for. The SW headers are on sale actually right now but for budget reasons im using stock F-body manifolds for now, i will upgrade to them in the future, i do my own fab work so i dont mind re-fab'n the exhaust a 2nd time.
11-03-2010, 06:48 PM
#6
Yes, match your springs to the cam lift. Stock springs are rated for the stock cam and barely that. The LS6 cam is a decent bump over the stocker and the old springs will bind. Luckily LS6 yellow springs are very cheap and common
About 230 @.050" is generally accepted to be as big as you want to cam a 5.3. Of course, most of the threads about it are polluted with overcammed engines that the owners say runs fine
About 230 @.050" is generally accepted to be as big as you want to cam a 5.3. Of course, most of the threads about it are polluted with overcammed engines that the owners say runs fine
11-06-2010, 10:14 AM
#7
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I'm running an LM7/T-56 and it's a pretty good setup, definitely better than the 305 tbi/t-5 setup the car came with. You just can't beat the LSx platform, there is more power to be made and better mpg's in the end. I love my setup and it always opens up the door to a 6.0 later on down the road... which I do plan on doing someday. The L33 should be a nice engine to work with and make plenty of power, good luck with your swap.
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11-06-2010, 10:30 AM
#8
I'm running an LM7/T-56 and it's a pretty good setup, definitely better than the 305 tbi/t-5 setup the car came with. You just can't beat the LSx platform, there is more power to be made and better mpg's in the end. I love my setup and it always opens up the door to a 6.0 later on down the road... which I do plan on doing someday. The L33 should be a nice engine to work with and make plenty of power, good luck with your swap.
thanks dan, im sure i'll be buggin you alot soon! lol
