ls1 with 5.3l heads?

[kerrige]

You will want/need different injectors.

[Frenchy]

You want 350 rwhp? I made 346 with Patriot 59cc LS6 heads and an EPS 222/226 cam, through stock manifolds and exhaust. Stock truck intake and TB too. You can find the heads used for less than a grand, everything to do the cam swap usually comes in around 1000, solid tune, go have fun. Add to my combo headers, decent exhaust it'd likely be around 375.

My torque curve is as flat as a board too and it makes 300 ft lbs of torque from 2000 on up around 5000 where it peaked at 324 or 334, can't remember. Makes for a great DD, truck still averages 24mpg.

[kerrige]

You want 350 rwhp? I made 346 with Patriot 59cc LS6 heads and an EPS 222/226 cam, through stock manifolds and exhaust. Stock truck intake and TB too. You can find the heads used for less than a grand, everything to do the cam swap usually comes in around 1000, solid tune, go have fun. Add to my combo headers, decent exhaust it'd likely be around 375.

My torque curve is as flat as a board too and it makes 300 ft lbs of torque from 2000 on up around 5000 where it peaked at 324 or 334, can't remember. Makes for a great DD, truck still averages 24mpg.

Need to consider the 9% drive train loss in an auto vs manual correct? 346 minus 9% comes down to 315ish. I agree your setup is sick tho. I am not really sure what the OP has for a trans to tell the truth.

[Frenchy]

Oh yeah the dyno numbers will be lower with the auto, but with a decent converter an auto truck, same combo as mine would put BUS lengths on my truck. Mine's embarrassing on the track, it's a roll racer and dyno queen.

[vtrey]

You will want/need different injectors.

Ok what size? Bigger fuel pump?

[kerrige]

I am a fan of the Walbro 400. Small size big flow. Cheap price. genuine Walbro only watch out for Chinese knock offs.
For injectors I would say 30ish lbs and above is good depending on future plans 42s come up for reasonable money regularly used on pt.net. The cheapest option might be tbss injectors. I think they flow 33 lbs. If you plan on boost ever then spring for the biggest you can afford.