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Highest Total timing on your hot rod Cleveland.
#1
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
[Image: a230aae4f76e12250b8a532ca6d00e17.jpg][Image: 7d5f5c525f2b3b852ad660d2d001fb4b.jpg]



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#2
38 total (no vacuum advance). 408C cc 4V iron heads, 9.7:1 SCR, aggressive SFT cam. Chuck
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#3
That’s the number I keep hearing.

Have you Dynoed you combo?



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#4
(11-07-2019, 05:02 PM)mikeyhunts Wrote: 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
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#5
What intake are you using?
How big of a cam?




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#6
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. Tongue Chuck
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#7
Same here 38 total no problems, been like that for years.
I had 18 at idle and 20 mechanical advance for years.
Last year tried a locked distributor at 38 degrees and seems to run better at idle and low speeds.
Cam is 255 duration .605 lift solid flat tappet and approx 10.5 or more compression

[Image: mustangnight010.jpg]
1972 Mustang Convertible 351C 4V
1966 Ford Galaxie 7 litre-4speed

Jorge
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#8
Good to know. You are real close to what I’m running.
I’m still at 36, and it’s running strong.
Good to know I have about 2 more degrees to play with.

Thanks everyone for the feedback.

Mike



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#9
351C 4V closed camber with a toploader
34 total with 18 to start lunati hyd. flat tappet 560/580 lift something (I forget the rest of the specs.)
Blue Thunder with 650 Holley double pumper.
Sanderson shorties with 2 1/2 pipes with the X and 2010 modified to fit mustang GT mufflers.
0 deck the block, 30 over flat tops, no stroker crank

Had a bit of knock with 4v cast exh. logs before I switch to shorties

dyno a little over 380 hp at 6200 rpm with max tq. at 5200 too the ground (if I remember correct I'm on winter vacation away from the snow).
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