Highest Total timing on your hot rod Cleveland.

[mikeyhunts]

I’m curious as to what others have seen their hot rod 4v closed chambered stroker Cleveland’s total timing tolerate.

Mine is a 381stroker with 10.3/1 compression with Holley hyperspark dizzy and Super Sniper.
Forged pistons, hbeam rods, forged crank.
Hyd roller .235/245@50, .625 ish lift.

It is in the 500ish HP ballpark, and I’ve been inching my way up on total timing.
Started at 32. Now at 35 on 93 pump gas.
I see reports up to 38.

Your thoughts appreciated.
I posted here since I know there are a lot of Cleveland’s here.

Thanks,
Mike




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[c9zx]

38 total (no vacuum advance). 408C cc 4V iron heads, 9.7:1 SCR, aggressive SFT cam. Chuck

[mikeyhunts]

That’s the number I keep hearing.

Have you Dynoed you combo?



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[c9zx]

That’s the number I keep hearing.

Have you Dynoed you combo?



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Yes I did. 529 HP/496 TQ. the dyno sheet is on this site if you can find it. Chuck

[mikeyhunts]

What intake are you using?
How big of a cam?




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[c9zx]

Blue thunder intake with minor radiusing on the plenum to runner turns. Cam is Lunati 41199LUN on a 110 LSA, .562/.580, 238/248 @ .050. If i were building it now I'd use a 10.25:1 SCR and a true custom cam from Mike Jones. Was too conservative on SCR because only 91 octane available here, next time.  Chuck