9540x

Any idea what kinda power a carbed 5.3 would yield? It would have ported heads and bored to accept 5.7 pistons.

sleepybu

9540x

Perhaps I should be more specific:

I am about to swap into my third gen firebird a 5.3 engine. The wiring for FI is daunting, but I love the LsX based engines. All aluminum are too expensive for me so I bought a 5.3 from a junkyard for 500 bucks including tranny (not bad, huh?). So, I hear carbs really let any LSx based engine breathe and are simpler to install. I was curious if anybody has power numbers for said swap including the bore and ported heads, or stock.

lq4-240z

iTrader: (2)

i dont know if this helps but carcraft did like 490 at the crank with stock heads a cam n carb on 6.0 LQ4. they also did 550 with the l92 heads. its a series they did over the last 2 months. you should check it out allot of good info. hope this helps

hpmotorsports

iTrader: (5)

I have a carb 5.3 with ported heads and 224 cam 566 lift,it made 350rwhp ,stock bottom end,2.00 intake valves, hope that gives you a idea.

G-Body

iTrader: (4)

Thats a great price. How are you going to control the tranny if your going with a carb? Or did you get a older non-computer controlled trans?

9540x

I'm actually switching over to a manual trans, but I just thought that 500 bucks for both was really good.