ls1 with 5.3l heads?

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11-25-2012, 11:37 PM
vtrey

ls1 with 5.3l heads?

Goood combo?
11-25-2012, 11:52 PM
kerrige

Lots of compression very little flow compared to 243s etc
11-26-2012, 01:08 AM
vtrey

Quote:

Originally Posted by kerrige

Lots of compression very little flow compared to 243s etc

So get 243s?
11-26-2012, 02:02 AM
kerrige

243s and ls6 cam and Walah you have an LS6. I would suggest getting a set of worked 243s(milled slightly and a good p&p) and a good sized cam (226/230 or 224/228 come to mind). Add a triple disk 34-3600 stall and you have a scary fun ride on your hands.
11-26-2012, 08:53 AM
Chevy-Art

Quote:

Originally Posted by vtrey

ls1 with 5.3l heads?
Goood combo?

Are you talking about a true LS1? 5.7 aluminum block f-body, corvette style or the generic term used to describe a gen III, IV engine. If so, I've always wondered about 243/799 heads combo package on an LS1.
11-26-2012, 09:38 AM
vtrey

Quote:

Originally Posted by kerrige

243s and ls6 cam and Walah you have an LS6. I would suggest getting a set of worked 243s(milled slightly and a good p&p) and a good sized cam (226/230 or 224/228 come to mind). Add a triple disk 34-3600 stall and you have a scary fun ride on your hands.

Well this is going in a daily driver I dont want some to crazy I would love for it to be crazy but not with my dd
11-26-2012, 12:19 PM
kerrige

Quote:

Originally Posted by vtrey

Well this is going in a daily driver I dont want some to crazy I would love for it to be crazy but not with my dd

Don't be scared haha it would be worth it. If you want to go more mild then get the 243s milled P&P and throw a mild(216/220) cam at it. No need for a stall and plenty of power to work with.
11-26-2012, 02:21 PM
vtrey

Quote:

Originally Posted by kerrige

Don't be scared haha it would be worth it. If you want to go more mild then get the 243s milled P&P and throw a mild(216/220) cam at it. No need for a stall and plenty of power to work with.

Ok we got that option or what would I need to get 350 to 400 maybe a Lil more than 400 hp out of a 5.3l
11-26-2012, 02:32 PM
kerrige

Boost or spray are about the only options to get over 400rwhp. Even cam heads and every Bolton on the market you won't likely hit 400. 325-375 is the expected range for a cam and heads 5.3 when tuned well. Most people don't understand what 300+ will even feel like because they don't realize these trucks only put down 215ish stock.
11-26-2012, 02:43 PM
vtrey

Quote:

Originally Posted by kerrige

Boost or spray are about the only options to get over 400rwhp. Even cam heads and every Bolton on the market you won't likely hit 400. 325-375 is the expected range for a cam and heads 5.3 when tuned well. Most people don't understand what 300+ will even feel like because they don't realize these trucks only put down 215ish stock.

Oh wow ok that makes sence well best option for 350 375 hp out of a 5.3l
11-26-2012, 03:06 PM
kerrige

150 shot of spray :lol:

NA?
Swap to 4.8L pistons
Worked 243/799 heads
22x/230 cam
Tbss intake manifold with 90mm TB
Should get you Around 350ish.
11-26-2012, 03:28 PM
vtrey

Quote:

Originally Posted by kerrige

150 shot of spray :lol:

NA?
Swap to 4.8L pistons
Worked 243/799 heads
22x/230 cam
Tbss intake manifold with 90mm TB
Should get you Around 350ish.

Yeah its going to be na so I wouldn't have to change my injectors?
11-26-2012, 03:36 PM
kerrige

You will want/need different injectors.
11-26-2012, 03:50 PM
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.
11-26-2012, 04:21 PM
kerrige

Quote:

Originally Posted by 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.

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.
11-26-2012, 04:29 PM
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.
11-27-2012, 08:28 AM
vtrey

Quote:

Originally Posted by kerrige

You will want/need different injectors.

Ok what size? Bigger fuel pump?
11-27-2012, 12:24 PM
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.