Ported Stock LS1 Heads Potential?
Thread Starter
Racer
Joined: Dec 2005
Posts: 263
Likes: 0
From: Tucson Arizona
Ported Stock LS1 Heads Potential?
Just out of curiosity, what are the capabilities of a car on ported stock LS1 heads. I have my eye on the ECS NA cam and would like to think about porting the stock heads as well. The ECS site advertises up to 425 whp with stock heads and supporting bolt ons, any idea if upwards to 450 would be possible through ported stockers.
Yeah... I am a cheap skate.
Yeah... I am a cheap skate.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Just out of curiosity, what are the capabilities of a car on ported stock LS1 heads. I have my eye on the ECS NA cam and would like to think about porting the stock heads as well. The ECS site advertises up to 425 whp with stock heads and supporting bolt ons, any idea if upwards to 450 would be possible through ported stockers.
Yeah... I am a cheap skate.
Yeah... I am a cheap skate.
Spend the money and get some decent pp 243 heads or some pp 5.3 heads from some one like TSP or ECS Money well spent
Le Mans Master
Joined: Aug 2005
Posts: 5,130
Likes: 3
From: Winter Park FL
I am on ported ls1 heads(241s). Just made 430/398 after a Fast 90 install last week. Previous numbers on ported ls6 intake were 419/397. Went a best of 11.20@123 before the Fast install. Looking to go 10s this fall with the new intake. For reference, my cam is a Cartek 2x cam. Specs are 224/228 .590 113LSA.
If you are going to dump money in porting heads I would definitly get a set of ls6 heads for $350-400 on the FS section and use those. Cartek has gone over 500rwhp on ported ls6 heads and run 10.3s with them on them on a H/C car.
So you can make power and run great times on stock ported heads.
If you are going to dump money in porting heads I would definitly get a set of ls6 heads for $350-400 on the FS section and use those. Cartek has gone over 500rwhp on ported ls6 heads and run 10.3s with them on them on a H/C car.
So you can make power and run great times on stock ported heads.
Thread Starter
Racer
Joined: Dec 2005
Posts: 263
Likes: 0
From: Tucson Arizona
I am on ported ls1 heads(241s). Just made 430/398 after a Fast 90 install last week. Previous numbers on ported ls6 intake were 419/397. Went a best of 11.20@123 before the Fast install. Looking to go 10s this fall with the new intake. For reference, my cam is a Cartek 2x cam. Specs are 224/228 .590 113LSA.
If you are going to dump money in porting heads I would definitly get a set of ls6 heads for $350-400 on the FS section and use those. Cartek has gone over 500rwhp on ported ls6 heads and run 10.3s with them on them on a H/C car. So you can make power and run great times on stock ported heads.
If you are going to dump money in porting heads I would definitly get a set of ls6 heads for $350-400 on the FS section and use those. Cartek has gone over 500rwhp on ported ls6 heads and run 10.3s with them on them on a H/C car.
So you can make power and run great times on stock ported heads.
Le Mans Master
Joined: Aug 2005
Posts: 5,130
Likes: 3
From: Winter Park FL
Its going to vary depending on how much porting you want to do and the reputation of the person doing the work. I'm sure you can have a backyard mechanic do it a lot cheaper than having somebody well known do it. I paid the extra money and had Cartek do mine because their product has proven itself time and again and wanted to do it right the first time.
Drifting
Joined: Feb 2007
Posts: 1,446
Likes: 0
From: Cranford NJ
Just out of curiosity, what are the capabilities of a car on ported stock LS1 heads. I have my eye on the ECS NA cam and would like to think about porting the stock heads as well. The ECS site advertises up to 425 whp with stock heads and supporting bolt ons, any idea if upwards to 450 would be possible through ported stockers.
Yeah... I am a cheap skate.
Yeah... I am a cheap skate.
It really comes down to the package and how aggressive or mild you decide to go. Give me a call if you have any questions.
Max
908.317.4496
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Safety Car
Joined: May 2006
Posts: 3,799
Likes: 1
From: Northern Virginia
St. Jude Donor '08
Just out of curiosity, what are the capabilities of a car on ported stock LS1 heads. I have my eye on the ECS NA cam and would like to think about porting the stock heads as well. The ECS site advertises up to 425 whp with stock heads and supporting bolt ons, any idea if upwards to 450 would be possible through ported stockers.
Yeah... I am a cheap skate.
Yeah... I am a cheap skate.
There is a book out on the LS1/LS6 motors. Don't remember the author's name. It had a chapter on heads that included a comparison between the LS1 and LS6 heads stock, and ported and polished. If I recall correctly, the ported and polished LS1 heads seriously outflowed the stock LS6 heads.
Thread Starter
Racer
Joined: Dec 2005
Posts: 263
Likes: 0
From: Tucson Arizona
^^I am in the same boat as you. I have an LS1 motor (99 FRC) and I bought the ECS cam and have a set of ported and polished LS1 heads. Have not yet installed and will be a while before I do so I can not give you results, but I am shooting for numbers similar to you.
There is a book out on the LS1/LS6 motors. Don't remember the author's name. It had a chapter on heads that included a comparison between the LS1 and LS6 heads stock, and ported and polished. If I recall correctly, the ported and polished LS1 heads seriously outflowed the stock LS6 heads.
There is a book out on the LS1/LS6 motors. Don't remember the author's name. It had a chapter on heads that included a comparison between the LS1 and LS6 heads stock, and ported and polished. If I recall correctly, the ported and polished LS1 heads seriously outflowed the stock LS6 heads.
Le Mans Master
Joined: Aug 2005
Posts: 5,130
Likes: 3
From: Winter Park FL
That would definitely surprise me on the LS1 heads outflowing the LS6 heads. Did you have your LS1 heads milled, which LS1 heads do you have (apparrently there are more than one from what I gather, could be wrong though). I'll definitely be itnerested to hear your results as well.
Thread Starter
Racer
Joined: Dec 2005
Posts: 263
Likes: 0
From: Tucson Arizona
Safety Car
Joined: May 2006
Posts: 3,799
Likes: 1
From: Northern Virginia
St. Jude Donor '08
That would definitely surprise me on the LS1 heads outflowing the LS6 heads. Did you have your LS1 heads milled, which LS1 heads do you have (apparrently there are more than one from what I gather, could be wrong though). I'll definitely be itnerested to hear your results as well.
If I recall correctly, he said they were good for at least an extra 35 rwhp over stock heads. He was running the stock cam. I believe the heads were milled slightly, but had extensive porting and polishing done to them, as well as installing bigger valves and a whole bunch of goodies.
I will be quite curious to see how they work out, especially with the ECS cam. I would be happy to hit 425 rwhp. Anything more will be icing on the cake.
