Lost power with incorrect length pushrods??
08-24-2005, 08:34 AM
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Lost power with incorrect length pushrods?? OK guys, I am getting ready to install my F13 cam, which has a base circle of 1.45". Using the pushrod calculator, I came out with an ideal pushrod length of 7.4315".
First, is 7.425 the best compromise for pushrod length?
Also, I have read of many people just using 7.400" pushrods, which is what I have. Would doing that cost me any power due to the reduced lift? Thanks, Pete.
First, is 7.425 the best compromise for pushrod length?
Also, I have read of many people just using 7.400" pushrods, which is what I have. Would doing that cost me any power due to the reduced lift? Thanks, Pete.
08-24-2005, 08:45 AM
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If lifter pre-load is set properly, lift should not change, nor would power.If you have problems setting preload then a different length push rod might be required.Example if it takes two full turns to get 22 ft/lbs after initial contact, push rod is too short and the next available size should be used.
08-24-2005, 08:47 AM
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Should have said I am using stock non-adjustable rocker arms. I just want to get my valvetrain as close to optimum as possible without buying adjustable rockers.
08-24-2005, 09:55 AM
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Originally Posted by Lost
If lifter pre-load is set properly, lift should not change, nor would power.If you have problems setting preload then a different length push rod might be required.Example if it takes two full turns to get 22 ft/lbs after initial contact, push rod is too short and the next available size should be used.
Nate
