ALL UC2

iTrader: (4)

everyone might think i am stupid but, i originally was going to build a 402 with l92 heads and such, but i have decided to put more money in the chassis and get it ready for a big horsepower motor.

so i bought a complete 5.3 from a friend extremely cheap. and planned on putting some prc 5.3 heads and a pretty large cam in it. car is pretty well race only so im not really worried about streetablitly.

my question is has anyone on here used a 5.3 shortblock??? and what kind of power did they make?? any advise?? if i can get it to put about 400 to the wheels i will be happy. dont say scrap the 5.3 cause this is just a temp. motor to get me by. the chassis this is going in has about a 28-- lbs race weight with me in it.


im guessing a magic stick or something of that nature is too big for a 325 inch motor?? anyone tried anything bigger than a 230 or so duration???

V8 Supra Builder

iTrader: (37)

I swear by them for my engine swaps... but I'm not modding them too much. I was going to add a turbo ala the Wheel to Wheel setup on my LM7 SUpra, but ran out of room underhood. The complete 5.3 was $400 at a local junkyard.

For my RX7 swap, I picked up a 20K mile 2005 L33 (all aluminum motor w/ LS6 heads & 310 HP) for $800. I'm planning to add a better cam (it is a truck motor & the car will weigh a lot less) with matching springs.

The least I've seen a complete 100K mile LS1 go for was around $1600 or so, usually more like $2000.

the owl

iTrader: (2)

I have a 5.3 in my FD with stock heads that are milled 0.30 and ported ls6 cam and intake mani its around 370-380whp

TooLateVTEC

iTrader: (2)

Damn dude, way to revive a thread thats 3 YEARS OLD !

5_02ls1

iTrader: (20)

not ran it at the track yet but here is my setup

98ta

03 lm7
ported 706 heads
cometic -030 headgaskets
04ls6 cam and springs
and all your basic bolt ons
if it makes 340-350 to the tire ill be happy...
\car weighs about 3100 give or take a lil..
and all kinds of nitrous...

I picked mine up for 450 had 30000 miles on it...came home sold the harness and pcm for 200...so i have 250 in a low mileage shortblock...

just playing around with it here at the house it feels really strong...

5_02ls1

iTrader: (20)

holy ****...lol i shouldve looked at the date before typing all that...lmao!!!!!

NemeSS

iTrader: (127)

a drove around for about 1/2 yr. with a 5.3 in my car, i was gathering parts for my engine

sman

iTrader: (4)

Running a bone stock 5.3 with an ls1 intake in my car with longtubes as the only bolt on really, aside from the trans anyway. Converted from a v6 this past winter. Put down 271/306. Ls6 intake, cam, and springs this upcoming winter. Hoping for 300 to the wheels.

5_02ls1

iTrader: (20)

you should make more than 300...hell ive seen trucks put 350 to the tire with some tiny *** cams....the ls6 cam is good for around 40rwhp in a 5.3 if that tells you anything...but 271 with headers as your only mod sounds about right....