Heads for magnum

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dusterboi89 said:
I’d like to make 550-600hp I had a 408sbf built For my dad and it made 615 on Engine dyno with 93/110 fuel mix I believe it was 12:1 compression with Victor jr heads So if I can get close to that it would be great for if not I guess I’ll go 440 for my duster
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Sounds like a doable goal, I would refer to someone like @pittsburghracer for a combination. Also I know Mike a B3 is working on an engine he is hoping for close to 650HP out of. I could guess, but I would rather trust someone with experience for a good combination.
 
dusterboi89 said:
I’d like to make 550-600hp I had a 408sbf built For my dad and it made 615 on Engine dyno with 93/110 fuel mix I believe it was 12:1 compression with Victor jr heads So if I can get close to that it would be great for if not I guess I’ll go 440 for my duster
Click to expand...

If you approach the SBM 408 the same as how that SBF 408 was done, you should easily end up within the 550-600hp window.

For similar $$$, if you went the BB route, you could have roughly another 100hp.
 
PRH said:
If you approach the SBM 408 the same as how that SBF 408 was done, you should easily end up within the 550-600hp window.

For similar $$$, if you went the BB route, you could have roughly another 100hp.
Click to expand...

I’ve always wanted a 440 in the duster but everyone complains that there’s no room to work on anything
 
Then do a low deck stroker and have the room.
 
all the width is a problem with is changing the plugs
drill some holes for the socket extension through the fenderwells and be prepared to change some from below
small starter helps
 
I'm using a magnum block with trickflow heads.
Comp 1622-16 rockers also allow for pushrod oiling.
843-16 solid roller lifters that allow pushrod oiling ..
Works pretty well.
 
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