Jasperstang308

¤puts flame suit on¤ I wasn't sure where to put this thread and thought it was a good start.
So is anyone going fast with a 5.3 NA? What's your combo? Cam? Compression? Etc? I found a lm4 for a descent price for my swap and was curious how fast everyone was going

custm2500

iTrader: (11)

I can't tell you in an F-body but most anyone with a 5.3 in a truck is boosted to have respectable times.

Jasperstang308

Well a truck is what 4000 plus pounds? I'm expecting my coupe to be around 2600lbs. So maybe with some spray it should be a 10 second car I would think

IH8FORD

iTrader: (6)

With a 4800 lbs race weight in my 07 silverado I ran a 13.70 cam only with a 4.8. The 5.3 trucks will run 12's with cam, stall header NA. My truck ran a 12.60 on a 100 shot. Performance trucks.net is a good place to get info on 5.3's

Jasperstang308

i'll look them up thanks. i been doing a lot of searching on here but havent really found much info about the 5.3 unless someone is turbocharging it

Graham@NitrousOutlet

The 5.3 with some head work and a cam can run some pretty decent times. Not hard to make over 400hp with one NA and then spray it to 550-500hp. We have done quite a few of these.

brandoz28

iTrader: (3)

with a little more work you can go up to a 5.7 on a 5.3 block and use the ls1 rotating assembly

Jasperstang308

Will the ls1 pistons add more compression? Or would you be better off getting different pistons to increase the compression

Jasperstang308

Also the lm4 engine comes with the 243/799 heads right?

charlie97z28

iTrader: (2)

I'm planning on building a 5.3 It's goin be stock bottom end with worked heads and a torquer v3 cam and goin to call graham for the nitrous set up

IH8FORD

iTrader: (6)

Yes the LM4 comes with 243or 799 heads