deerslayinrednek

iTrader: (8)

Whats needed to put a 5.3 in a 99 camaro that has an engine thats shot?.......The guy is looking to do it on the cheap......What parts/sensors won't swap over?........If there is a write-up somewhere I couldn't find it......Thanks

nascarnate326

iTrader: (1)

what motor does it currently have?

Almost everything LS1 based will swap over.

If its a 3800...different story.

Swaie

iTrader: (6)

I'm thinking its a straight swap, just use the ls1 intake minifold, from what I know, which aint much, the blocks are the same just the rotating assembly is different...if you keep it stock I think it will be slower, so do a heads and cam swap before if power is an issue...

01ssreda4

iTrader: (96)

Its a direct swap as long as you stay Gen3 to Gen3.

deerslayinrednek

iTrader: (8)

it's a 5.7

deerslayinrednek

iTrader: (8)

what yr 5.3's are gen 3's?

01ssreda4

iTrader: (96)

Have to read up on specific year model changes and be able to identify the visual differences.

badazz81z28

iTrader: (6)

I would look for a decent LS1 replacement short block. Why go smaller???

gt35built

iTrader: (1)

because you can get 3-4 5.3 pull outs for the price of 1 5.7.

badazz81z28

iTrader: (6)

Yea for good reason too. 5.3s can be built up, but thats not cheap.

I guess if the mission is to just get you back on the road....Performance will be a disapointment as power is lower with a heavier foundation.

Luke1834

i got my 5.3 bored over to 3.903 with a stock ls1 crank with forged callies rods and forged weisco pistons runs like a champ i bought a tubular k member to compensate for the iron block weight, planning on spraying 200 shot of nitrous both ls1 aluminum blocks i have had have cracked and i paid 100 dollars for my 5.3the only thing i had to do is drill and tap a hole to mount the ls1 alternator

deerslayinrednek

iTrader: (8)

Good to know



Also just wanted to say I'm not looking to do this for myself, it's for someone who wants the car back on the road quick and cheap.....He claims he wants to build the LS1 when the funds are more available

Damon Kelehan

Which pcm and engine harness should I use for the lm7 going into a 99 T/A ws6 I have both harnesses and pcm

JoeNova

You could use the 5.7 PCM and have it reflashed for the 5.3, or use the 5.3 PCM and have it reflashed to work with the VATS for the WS6.

Or you could just use the 5.7 PCM as-is.


One thing they forgot to mention 5 years ago when this was posted, if its an iron 5.3 you'll have to redrill the mounting point for the alternator bracket. The aluminum 5.3s are already drilled there.