416 stroker
Drifting
Joined: Jun 2002
Posts: 1,682
Likes: 3
You would think as such results with Trick Flow heads on the 4.065" LS3 bore trickle in, that people would get the message that LS3 ported heads would have results that are laughable at best in comparison. I recall an east coast tuner who told me 535rwhp on an LS3 with trick Flow heads was "optimistic". I'm revising the prediction to 545rwhp with a big cam.
Although a stroker here, the bore is still the same as the 6.2L.
Cartek should be applauded for taking the initiative on such a build but then Julio and crew stopped surprising me long ago.
Good job!
Although a stroker here, the bore is still the same as the 6.2L.
Cartek should be applauded for taking the initiative on such a build but then Julio and crew stopped surprising me long ago.
Good job!
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
Drifting
Joined: May 1999
Posts: 1,370
Likes: 12
From: Garwood NJ
You would think as such results with Trick Flow heads on the 4.065" LS3 bore trickle in, that people would get the message that LS3 ported heads would have results that are laughable at best in comparison. I recall an east coast tuner who told me 535rwhp on an LS3 with trick Flow heads was "optimistic". I'm revising the prediction to 545rwhp with a big cam.
Although a stroker here, the bore is still the same as the 6.2L.
Cartek should be applauded for taking the initiative on such a build but then Julio and crew stopped surprising me long ago.
Good job!
Although a stroker here, the bore is still the same as the 6.2L.
Cartek should be applauded for taking the initiative on such a build but then Julio and crew stopped surprising me long ago.
Good job!
Drifting
Joined: May 1999
Posts: 1,370
Likes: 12
From: Garwood NJ
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
There might be some solid roller long runner or sheet metal intake type set ups out there making great power but that's not exactly in the same exact realm.
Melting Slicks
Joined: Nov 2010
Posts: 2,626
Likes: 195
From: On the east coast we drive until we die
Has anyone dyno'd at Carteck and then somewhere else to see if theirs reads low?
This thread makes me want to sell my existing engine and go for a stroker. Too bad the finances don't live up to the dream.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Comparing a 441 cube motor with LS3 heads is fine if you have something to compare it to. Its not a 416 and it doesnt have a 441 counterpart with Trick Flow heads. Sorry but if you hold the motor fixed, the TF beats a ported LS3. Its been proven in spades on the LS2 but there arent any takers for the LS3 yet.
Go over to LS1tech and see the vast number of 500-520rwhp strokers using ported LS3 heads. This build at 587 was through 4.10 gears and we have already seen that lowers the dyno reading making this car a 600/530rw result. Hinson had a LS3 427 (4.065 bore/4.1 stroke) hit 611/580rwTQ with trick flow 235s. LS3 heads are >50hp behind that.
Drifting
Joined: Jun 2002
Posts: 1,682
Likes: 3
Cartek's LS3 portings have been on a few LS3s that went mid 10.6's....10.63 if I recall. What are you comparing it to? Is there an LS3 with trick flows 235s being run? I have yet to see an LS3 match an TF/LS2 stock displacement. If you put Cartek's LS3 ported heads on this 416, power will drop.
Comparing a 441 cube motor with LS3 heads is fine if you have something to compare it to. Its not a 416 and it doesnt have a 441 counterpart with Trick Flow heads. Sorry but if you hold the motor fixed, the TF beats a ported LS3. Its been proven in spades on the LS2 but there arent any takers for the LS3 yet.
Go over to LS1tech and see the vast number of 500-520rwhp strokers using ported LS3 heads. This build at 587 was through 4.10 gears and we have already seen that lowers the dyno reading making this car a 600/530rw result. Hinson had a LS3 427 (4.065 bore/4.1 stroke) hit 611/580rwTQ with trick flow 235s. LS3 heads are >50hp behind that.
Comparing a 441 cube motor with LS3 heads is fine if you have something to compare it to. Its not a 416 and it doesnt have a 441 counterpart with Trick Flow heads. Sorry but if you hold the motor fixed, the TF beats a ported LS3. Its been proven in spades on the LS2 but there arent any takers for the LS3 yet.
Go over to LS1tech and see the vast number of 500-520rwhp strokers using ported LS3 heads. This build at 587 was through 4.10 gears and we have already seen that lowers the dyno reading making this car a 600/530rw result. Hinson had a LS3 427 (4.065 bore/4.1 stroke) hit 611/580rwTQ with trick flow 235s. LS3 heads are >50hp behind that.
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Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
That is very possible, these particular TFS heads are obviously getting it done.
But I do believe that these were TFS 225s (I'm thinking 235s would've been better?) and do keep in mind that they weren't merely 'off the shelf/as delivered' TFS heads either, they had plenty of machining work done to them by Cartek. Valve train set up and assembly were obviously not done by TFS either.
True
You really think it would be that much?
I'm not refuting it at all as I know it's very possible, but I'd just thought it might be closer to a 20-30hp difference.
And you're talking cathedral port TFS heads and not the new rectangle port/LS3 style ones, correct?
But I do believe that these were TFS 225s (I'm thinking 235s would've been better?) and do keep in mind that they weren't merely 'off the shelf/as delivered' TFS heads either, they had plenty of machining work done to them by Cartek. Valve train set up and assembly were obviously not done by TFS either.
I'm not refuting it at all as I know it's very possible, but I'd just thought it might be closer to a 20-30hp difference.
And you're talking cathedral port TFS heads and not the new rectangle port/LS3 style ones, correct?
Drifting
Joined: Jun 2002
Posts: 1,682
Likes: 3
That is very possible, these particular TFS heads are obviously getting it done.
But I do believe that these were TFS 225s (I'm thinking 235s would've been better?) and do keep in mind that they weren't merely 'off the shelf/as delivered' TFS heads either, they had plenty of machining work done to them by Cartek. Valve train set up and assembly were obviously not done by TFS either.
True
You really think it would be that much?
I'm not refuting it at all as I know it's very possible, but I'd just thought it might be closer to a 20-30hp difference.
And you're talking cathedral port TFS heads and not the new rectangle port/LS3 style ones, correct?
But I do believe that these were TFS 225s (I'm thinking 235s would've been better?) and do keep in mind that they weren't merely 'off the shelf/as delivered' TFS heads either, they had plenty of machining work done to them by Cartek. Valve train set up and assembly were obviously not done by TFS either.
True
You really think it would be that much?
I'm not refuting it at all as I know it's very possible, but I'd just thought it might be closer to a 20-30hp difference.
And you're talking cathedral port TFS heads and not the new rectangle port/LS3 style ones, correct?
I don't think all ported LS3 heads are equal. I respect Spin's opinion, but It's hard to argue with Julio given his success/experience...
Last edited by xstang; Aug 23, 2011 at 07:56 PM.
