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408 ls stroker build

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Old Jan 8, 2024 | 11:26 PM
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Default 408 ls stroker build

What are the best heads to go with the 408ls, im running N/A 4x4 300ft max.Currently have ss4 cam but need suggestion on what heads are the best bet and best lifters.
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Old Jan 9, 2024 | 01:46 AM
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Originally Posted by Manny1990
What are the best heads to go with the 408ls, im running N/A 4x4 300ft max.Currently have ss4 cam but need suggestion on what heads are the best bet and best lifters.
Will need more information about what your goals are and what the primary vehicle use will be. Assuming 4x4 means suv or truck so I guess it's heavy?

In my application and experience, trick flow 255s produced good numbers for me with 403 cubes and more cam. If I had to do it again I would try a set of mast small bore ls7 heads instead.

225 cc cathedral as casts with a similar sized cam to what you have was pretty weak compared to new setup.
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Old Jan 9, 2024 | 01:55 AM
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Originally Posted by B4CMaro
Will need more information about what your goals are and what the primary vehicle use will be. Assuming 4x4 means suv or truck so I guess it's heavy?

In my application and experience, trick flow 255s produced good numbers for me with 403 cubes and more cam. If I had to do it again I would try a set of mast small bore ls7 heads instead.

225 cc cathedral as casts with a similar sized cam to what you have was pretty weak compared to new setup.
its a 01 jeep xj have a th3500 with transbrake 3800 stall its mainly for dirt drags.but looking for power to get out of the hole and little top end.


Last edited by Manny1990; Jan 9, 2024 at 02:05 AM.
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Old Jan 9, 2024 | 10:25 AM
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Originally Posted by Manny1990
its a 01 jeep xj have a th3500 with transbrake 3800 stall its mainly for dirt drags.but looking for power to get out of the hole and little top end.
I would go with afr 260s and ls3 gm intake or fast with long runners.

Should make great power from 3500 to 6500
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Old Jan 9, 2024 | 08:24 PM
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Originally Posted by B4CMaro
I would go with afr 260s and ls3 gm intake or fast with long runners.

Should make great power from 3500 to 6500
okk thank you i'll start to look into the afr's or trick flow.
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Old Jan 11, 2024 | 06:28 PM
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Go with a small bore LS7 head. GPI has made 550+ whp on a stock bottom end LS3 with theirs, they call it their LS3 Max package.
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Old Jan 11, 2024 | 11:25 PM
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Small bore ls7 might be pretty good too. I haven't recommended them because I haven't used them and there isn't as much data or results out there about them.
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Old Jan 13, 2024 | 07:31 AM
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Originally Posted by B4CMaro
Small bore ls7 might be pretty good too. I haven't recommended them because I haven't used them and there isn't as much data or results out there about them.
do u think m311 frankeinstein heads will work good?
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