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Discussion Starter · #1 ·
Initial timing and total thoughts?

Ford 400 bored .030 over, decked .010/ 9.75:1 comp ratio
Keith black oe style pistons
Edelbrock Cleveland performer rpm heads
Edelbrock performer rpm air gap intake
PME intake spacers
1" open carb spacers
Edelbrock 750 carb
Howards Cams hydraulic flat tappet 224 @ .050 108 lsa .544 lift
4 degrees machined into cam, installed additional 2 advanced
Adjustable Roller rockers
Hooker comp long tube headers
Dual 2.5" exhaust, no balance pipe

Currently 25 initial, 35 all in around 3k
 

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Your engine and fuel are the only factors that can determine the best mechanical initial, total, and rate. Anybody's guess is as good as anybody else's guess. My guess (if using pump gas) is too much initial (no vac), too much total, and it comes-in too slow (unless it's a bus). Read-up in the other threads to get ideas on how to determine what your engine wants to run it's best. BTW - why did you add 2° to the cam? is your carb spacer open or 4-hole?

David
 

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Discussion Starter · #3 ·
Your engine and fuel are the only factors that can determine the best mechanical initial, total, and rate. Anybody's guess is as good as anybody else's guess. My guess (if using pump gas) is too much initial (no vac), too much total, and it comes-in too slow (unless it's a bus). Read-up in the other threads to get ideas on how to determine what your engine wants to run it's best. BTW - why did you add 2° to the cam? is your carb spacer open or 4-hole?

David
I added 2 on the mfg's in house engine builder's recommendation in order to bring the operating range down a bit closer to where I expected power to peak.

Pump gas, yes
Spacers is open.
 

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Discussion Starter · #4 ·
Your engine and fuel are the only factors that can determine the best mechanical initial, total, and rate. Anybody's guess is as good as anybody else's guess. My guess (if using pump gas) is too much initial (no vac), too much total, and it comes-in too slow (unless it's a bus). Read-up in the other threads to get ideas on how to determine what your engine wants to run it's best. BTW - why did you add 2° to the cam? is your carb spacer open or 4-hole?

David
I added 2 on the mfg's in house engine builder's recommendation in order to bring the operating range down a bit closer to where I expected power to peak.

Pump gas, yes
Spacers is open.
 

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Discussion Starter · #6 · (Edited)
What vehicle, transmission and intended use?
1975 ranchero roughly 3750 lbs currently. FMX trans, stock convertor(for now) 4.11 gears. I drive it about 1000 miles a year around town, and to work occasionally, and eventually, when the trans is rebuilt, and the stall installed, i would like to do some test and tune nights, maybe a braket series locally, just for fun
 
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