Pushrod length?
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From: The Vieux Ford, Kansas
Pushrod length?
I was checking the push rod length today on a 351C and came up with 8.15" instead of 8.4". I was expecting a smaller difference but I checked it like 6 times and it kept coming out the same. I had contacted crower, the cam and lifter maker on how to do it and had one solid lifter shipped to use for checking as they suggested. I used comp cam's HiTech tool, the one where one turn equals .050, any body ever used this before? Does it work good? I always used to use an adjustable pushrod and take it to my engine builder and he would measure it but he has retired and I decided to do it my self. Well any, way all of the other times I have done this I haven't ever come up any thing even close to quarter of an inch, I think the worst one I have ever done was like .090. I have one 8.2"(a little long to account for preload) push rod ordered and I am going to see how it works, just wandering if any one has ever seen this big a difference before. This motor is an odd ball with Buick valves so I figure between the decking and the different length valves it all adds up. Sorry for being so long winded.
-John
-John
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From: Malvern, Ohio
Well if you indeed did deck the block or heads along with the taller valves those would make for a change, large or small, in engine measurements. Headgasket thickness also can change the pushrod length as well.
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From: The Vieux Ford, Kansas
The heads are 2V, highly ported. Used the buick valves because they are bigger exhaust valve is 4V cleveland. I had these heads done by a guy who has been building cleveland motors since they were new and he didn't like putting 4V intake valves in 2V heads said they were too big for the ports and if you use the smaller 2.11 Buick intake valve it would make more torque.
-John
-John
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