Stock ls1 head vs 5.3

**HitManLs1** · 06-25-2009, 07:44 AM

Okay I am wondering. Does a 5.3 head flow better then the head I already have on my car its a 98 Z-28. I plan on gettting a set of heads that came off a truck that is ported and wanted to know would it be worth the swap. Also what will be a good cam I want to spray 100- 150 shot wet. Ima thinking I can go ten's easy with all the bolton's and the head & cam swap.

**Zboner** · 06-25-2009, 08:04 AM

10's is not easy by any means

**zmg00camaross** · 06-25-2009, 08:38 AM

5.3 heads when ported and milled flow good and bump compression. I think heads and cam and spray will get you there. Just have to have correct suspension, tires and size, a 12 bolt or 9 inch with proper gears and the list goes on. For
A real 10
Second car

**Zboner** · 06-25-2009, 08:39 AM

this is true if you dont have the suspesion you will never get there

**garygnu65** · 06-25-2009, 10:04 AM

do you plan on running high octane unleaded with the nos ?you don't want to much compression only running pump gas when spraying.

**HitManLs1** · 06-25-2009, 10:23 AM

Yea I am going to run race gas when on the spray @ least 110 or 112.

**blackbirdbrain89** · 06-25-2009, 12:03 PM

for one 112 lsa cams have been know fore the best power.... and u can run 12-1 on 93 with a good tune... but not if ur going to spray at the same time....

**Hi-Po** · 06-25-2009, 02:16 PM

Originally Posted by blackbirdbrain89

for one 112 lsa cams have been know fore the best power.... and u can run 12-1 on 93 with a good tune... but not if ur going to spray at the same time....

Where did you pull that from?

**VOODOOII** · 06-26-2009, 08:28 AM

Originally Posted by Hi-Po

Where did you pull that from?

I have a 385ci small block in my nova with 13-1 compression with a loose converter and run on pump gas all day long

**Hi-Po** · 06-26-2009, 08:59 AM

Originally Posted by VOODOOII

I have a 385ci small block in my nova with 13-1 compression with a loose converter and run on pump gas all day long

I was commenting on a comical, very vague post. Dont know whos post your directing that to.

Looks like I totally goofed up and got a 114. Dang.

**HitManLs1** · 06-26-2009, 11:53 PM

What would be a good cam for my stock motor with stock heads. I want to run on motor for awhile.

**HitManLs1** · 06-27-2009, 10:25 AM

Have you guys seen some good dyno & 1/4 mile times with the 5.3 heads and a cam on nos and motor. What's the best you have seen with a bolt-on car with just cam and cam & nos stock heads and bottem end.

**garygnu65** · 06-27-2009, 03:40 PM

how much will you be paying for these 5.3 heads?

**HitManLs1** · 06-27-2009, 07:29 PM

Don't no yet how much are a set of ported 5.3 heads worth?

**blk_jaws** · 07-01-2009, 11:40 AM

ive seen them on ebay before for around $600. I have some that are still bolted to the block, that are not ported. They are numbered 799. If i dont use them, im gonna sell them

**mark21742** · 07-01-2009, 10:03 PM

Originally Posted by HitManLs1

Have you guys seen some good dyno & 1/4 mile times with the 5.3 heads and a cam on nos and motor. What's the best you have seen with a bolt-on car with just cam and cam & nos stock heads and bottem end.

Bills98TA on here ran 10.81 with a 1.4 60' this past weekend and he is still working on his tune......24x/ 25x cam 5.3 heads 14:1 commpression and a 150 shot through an a4, 4:10 moser 9" rear and drag radials.......but he has all the suspension goodies and uses his wheelie bar when he launches

**zmg00camaross** · 07-01-2009, 10:29 PM

What is a 24x/25x cam and what engine that's a lot of compression sorry for a little jacking of the tread

**mark21742** · 07-01-2009, 10:40 PM

Originally Posted by zmg00camaross

What is a 24x/25x cam and what engine that's a lot of compression sorry for a little jacking of the tread

I just can remeber the exact size the cam is, its huge for a stock cube ls1. 259/252 .607 lift 112 lsa (i just went back and checked on the size)
he is running domed pistons and a 4,600 stall.....drag only car, its not driven on the street......runs 114 unleaded

**HitManLs1** · 07-01-2009, 10:56 PM

O OK hey Mark do you know any guys who run in the 10's on motor with head & cam? That can be driven daily.

**zmg00camaross** · 07-01-2009, 11:08 PM

Originally Posted by mark21742

I just can remeber the exact size the cam is, its huge for a stock cube ls1. I think 248/254 .609 lift 112 lsa (i think that is the size)
he is running domed pistons and a 4,600 stall.....drag only car, its not driven on the street......runs 114 unleaded

Well that helps I knew it had to be on race fuel with that compression.