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sexypizzaman 10-02-2007 03:56 AM

Push Rod Length
 
Hey guys quick question. I am in the midst of buying the rest of the parts I need for my build but I have NO idea what size pushrods I will need. I'll list the specs of my build and if anyone can tell me what length pushrod I will need it would be very much appreciated. :)

383 SBC flat tops 10.2:1 compression
AFR 195cc aluminum heads with 70cc chambers (getting them milled to 70cc)
Lunati Vodoo hydraulic flat tappet cam, 227/233 dur. at 0.050", .489"/.504" lift.
CompCams Pro Magnum Roller Rockers (1.52:1)

My quench will be around 0.40-0.45 and I have ABSOLUTELY NO IDEA what length pushrod I need?? I am assuming just the regular 7.80" pushrod?? I was told to purchase a pushrod size checker but I don't know which size checker to buy as they come in 4 different sizes!! :smash: Any input by you experienced builders will help me a million!!

Thanks guys,
Keith :welcome:

Jmark 10-02-2007 07:59 AM

When I built my last 2 engines, the shop I used loaned me this simple little tool. Worked great. You will either have a gap at the stem (like mine) or a gap at the pushrod. Just add/subtract the measurements and you are good to order up the rods.

http://www.wonders-in-wood.us/images...rd/pushrod.jpg

You can also buy an adjustable pushrod but it will take some time getting the geometry right by trial and error before coming to the correct length.

Mark


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