408 stroker heads?
Thread Starter
Staging Lane
Joined: Mar 2024
Posts: 66
Likes: 15
408 stroker heads? I am building an iron block 408 stroker for my ctsv. I was planning on using the trickflow 215’s that came with the car but after talking with some camshaft companies it was recommended over and over that I ditch the 215’s for something with a larger intake runner as the 215’s would choke a 408 down. Now my question is do I just run the 215’s I already have or do I switch to a 225 or 235, or do I go a different route and grab a set of ls3 heads and have them ported? Or even get a aftermarket set of rectangle port heads?
Teching In
Joined: Jun 2008
Posts: 16
Likes: 3
From: San Tan Valley, AZ
If the 215's will achieve the power you want to make, then run them. If you want more than they'll allow you, step up to a larger head.
The heads flow 312 cfm and should easily make over 600 H/P. It just depends on where you want to go.
The heads flow 312 cfm and should easily make over 600 H/P. It just depends on where you want to go.
TECH Fanatic
Joined: Aug 2009
Posts: 1,845
Likes: 255
From: Coast of San Mateo County Between Pacifica & HMB
My .02
First choice, money no object Mamo Motor Sports 235's & Ported Fast 102
Second choice AFR LS3's, Ported OE LS3 Intake
Third choice Ported Fast 102 will be needed to max out your 215's w/ at least 238/246 cam, 1 7/8" LTs
with 3" exhaust to "max out" for a street able set up.
First choice, money no object Mamo Motor Sports 235's & Ported Fast 102
Second choice AFR LS3's, Ported OE LS3 Intake
Third choice Ported Fast 102 will be needed to max out your 215's w/ at least 238/246 cam, 1 7/8" LTs
with 3" exhaust to "max out" for a street able set up.
TECH Regular
Joined: Dec 2003
Posts: 405
Likes: 1
From: SOFLO
I've got TEA TFS 220's on my 408, but it's turbo charged. Runs strong out of boost and snappy with 11:1 static and a smallish cam. Sure I could have made more power with other heads but I chose to spend that money elsewhere in my build. I'd run those 215's you currently have with a good intake as mentioned and see how you like it.
Thread Starter
Staging Lane
Joined: Mar 2024
Posts: 66
Likes: 15
I've got TEA TFS 220's on my 408, but it's turbo charged. Runs strong out of boost and snappy with 11:1 static and a smallish cam. Sure I could have made more power with other heads but I chose to spend that money elsewhere in my build. I'd run those 215's you currently have with a good intake as mentioned and see how you like it.
Joined: Jul 2007
Posts: 1,504
Likes: 180
From: ELSA, South TEXAS (956) 802-7700
By further porting heads while off, will save you labor, down time and money. Intake is on top and easily swappable later on.
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TECH Fanatic
Joined: Jan 2017
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Likes: 442
I am building an iron block 408 stroker for my ctsv. I was planning on using the trickflow 215’s that came with the car but after talking with some camshaft companies it was recommended over and over that I ditch the 215’s for something with a larger intake runner as the 215’s would choke a 408 down. Now my question is do I just run the 215’s I already have or do I switch to a 225 or 235, or do I go a different route and grab a set of ls3 heads and have them ported? Or even get a aftermarket set of rectangle port heads?
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