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Pushrod length....

Greetings all, my first post for a long time.....

This may be covered somewhere, but I haven't found it.

To paint the basic picture, I am in the throws of having a 179HP bored to 192, going to run a Wade 446 solid lifter cam, YT head with rollers.

Is it correct that running solids requires a shorter pushrod? In this case 9" rods instead of the standard 9.13" (?) for hydraulics?

Appreciate any info.....

Cheers.

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Comments

Best you measure your desired length and get ones that long. Here is something I found to help you with a quick google search: http://www.chevyhipe...

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hmm.

From memory I think solid lifters will use the same pushrod as the hydraulics in engines with an adjustable valve train like 179's & 186's. Engines with non-adjustable valve trains (173 & 202) use a different lifter and different length pushrods.

Now in saying this your engine is going to be far from standard, the new cam will most likely have a different base circle, your cylinder head has likely been shaved and probably has aftermarket valves, that may or may not be a different length to the standard valves and the valve seats may or may not have been cut deeper than standard. Your also running roller rockers. All of these things can and will affect valve train geometry so really the only way to work out the correct length pushrod is to dummy assemble the engine and take some measurements.

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Cheers
David

aka hq308belmont

My Archived Shed

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