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Author Topic:   alky cam
dirtbuster
Member
posted July 29, 2003 09:45 AM
I remember reading or hearing somewhere that alky motors like a cam with less duration split like only 4-5 degrees. Maybe there is more to it than that. Anybody have any input.

Currently running a cam with 10 degrees and wondering if tightening the intake lash would make that side seem longer and decrease split a little bit. Or going to 1.6 on intake side and leave 1.5 rockers on the exhaust.


sdhnc29
Member
posted July 29, 2003 05:18 PM
Yes due to the fact that alky is an extremely slow burning fuel , a smaller split in duration is necessary . With a wide split in duration , you will be popping the exhaust valve open too early . This will basically , for lack of a better description , blow your torque right out the exhaust pipes before peak cylinder pressure is reached . The whole reason for the smaller spit in duration is for torque , and you will not see much of a horse power gain . Ultimately you will want to invest in a custom ground cam for your application . The changes that your intending to make might make a small difference with your existing cam .

When you get ready for a custom cam , give me a call and I'll give you a couple of our old alky cam grind numbers that you can use to have one made from Crower .

Steve

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Hendren Racing Engines
Rutherfordton , NC
(828)286-0780


ford5
Member
posted July 29, 2003 06:42 PM
Steve,what about a cam grind for a Ford alky 347? any good suggestions? I'd love to hear your thoughts..........ford5
Brian


sdhnc29
Member
posted July 29, 2003 09:08 PM
PM or email me with your engine spec's , compression ratio , the heads your using , flow numbers if you have them , type of car , track size etc. I should be able to give you a good suggestion with this info .

Steve

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Hendren Racing Engines
Rutherfordton , NC
(828)286-0780


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