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I've finally decided to go with the 5.3 build and I was wondering. What is the most horsepower you could get out of a 5.3? With it being fully bolton, 4:10 gears, Eaton Posi Locker,and fully built 4L60E? That should be making around 342 rwhp but lookin for a little more than that w/o the use of a turbo or supercharger.
on bottle, motor, FI???
all stock motor? forged rods and crank? you need to get a little more specific if you want a good answer
i made 341 cam and boltons
yeah but you suck:ma:Quote:
Originally Posted by LamboDoNoMo
haha J/K
im aiming for 400 all motor myself, got a GOOD ways to go
400rwhp with a 5.3 is going to take ALOT of parts.... Big heads,lots of compression and a big camshaft... intake....rpms...
agreedQuote:
Originally Posted by casey23
got a 226/229 cam, gona do the ls6 intake, and having a local performance shop do my heads. same place that worked on heads that made 554rwhp with a ls1
doesnt sound like 400rwhp worth of parts tho, cam's still too small
the 5.3 HO crate motors are puttin like 350 at the fly with a edelbrock intake/holley carb...
I would think cam/heads/ud/headers/good tune should be able to put 400 at wheels no problem if done right. Can't imagine THAT much is lost through drivetrain
Stock truck intake, 11.5:1, p&p heads, 236/240 .615/.615 112lsa, lt's, dual 3" exhaust made 398rwhp on my truck through a very loose 3800-4000 converter.
Cam only with long tubes and 2.5" duals I made 350rwhp with a 221/221 .567 112lsa with stock verter.
400 is doable but you're gonna spend some money gettin there
I've got some family in Bastrop and surrounding areas that drag race. The 5.3 is plenty tough and can be bored out to 3.90" so I'd shoot for that with a 4" stroker crank for a 383 LSX. 400hp should be a walk in the park...
Not tryin to steer u away from the 5.3 but why not get a 6.0 and make it alot easier on yourself and the motor?
ya i agree with the 6.0 325 hp stock so a few bolt ons will get u there in no time
swap out some flat top 4.8 pistons,
find set of used 243 heads and have them milled a little
healthy cam
long tubes and full exhaust
be cheapest way to get most N/A power. ... IMO
i wanna see how much i can make the 5.3 put to the wheels without boring and without any power adders. yes a 6.0 would be a quick way there and i may do that, i have a 2500 that i could do a motor swap in and have a 6.0 IF i ever decide to go that rough. my tuner has a 6.0 in a reg cab making 380/380 to the wheels (his "work" truck) has ls6 intake, 220/220 cam,LT's, K&N intake, Efans ,and tuned . we'll see how things go, i MAY go with a bigger cam but for now i wanna try this one. thanks for all the input tho lots of good ideas
I only made 330 to the wheels but ran 12.3 with a 5.3 in a rcsb.