Pushrod size
03-13-2007, 12:34 PM
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Pushrod size What size pushrod should i use on a stock 2002 camaro with a tr 224 cam . I was thinking maybe like a 7420 to maybe quite down valve train . Would that work or am i off base here?
03-13-2007, 02:45 PM
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Is there an easy way to determine the base circle? I have an idea of what cam I'm running. But, the car came this way. So, I don't have the actual cam card. I only know it's a CompCams 232/238 .595/.605 XE-R 112LSA cam. I too would like to know appropriate PR size if there's an easy way to compute...
03-13-2007, 07:00 PM
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Originally Posted by Jrp1978
What size pushrod should i use on a stock 2002 camaro with a tr 224 cam . I was thinking maybe like a 7420 to maybe quite down valve train . Would that work or am i off base here?
03-13-2007, 07:29 PM
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new pushrod length = ((stock cam base circle-new cam base circle)/2) + stock pushrod length - amount heads are milled - difference between new head gasket and old head gasket.
Stock base is 1.553, stock pushrods are about 7.39, stock head gasket is about .052
To measure base circle get a dial caliper and put it on the cam lobe and turn the lobe until the dial reads its lowest point, that low point is your base.
Stock base is 1.553, stock pushrods are about 7.39, stock head gasket is about .052
To measure base circle get a dial caliper and put it on the cam lobe and turn the lobe until the dial reads its lowest point, that low point is your base.
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03-13-2007, 11:16 PM
#9
Originally Posted by brad8266
new pushrod length = ((stock cam base circle-new cam base circle)/2) + stock pushrod length - amount heads are milled - difference between new head gasket and old head gasket.
Stock base is 1.553, stock pushrods are about 7.39, stock head gasket is about .052
To measure base circle get a dial caliper and put it on the cam lobe and turn the lobe until the dial reads its lowest point, that low point is your base.
Stock base is 1.553, stock pushrods are about 7.39, stock head gasket is about .052
To measure base circle get a dial caliper and put it on the cam lobe and turn the lobe until the dial reads its lowest point, that low point is your base.
03-14-2007, 09:14 PM
#10
Originally Posted by mvvette97
Just wondering, are you supposed to measure the base circle radius or the diamater? On my stock cam it was .775 on the radius and my comp cam is a .732 so that means my Comp is .043 smaller. I added that to the length of my stock pushrods so 7.396 + .043 =7.439. I went with 7.425 because the next size up was 7.450 and didn't know if it would hurt to go over the factory preload. So anyway is this how you figure it?
03-14-2007, 09:22 PM
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Originally Posted by Arcolog2
Brad's the man, can't wait to see your car running again THursday night bubba!
I'm PRAYING my headers come back from Kooks soon....
I'm PRAYING my headers come back from Kooks soon....
03-18-2007, 04:47 PM
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Originally Posted by brad8266
Ill be there. Yeah it is nice to have the car back again. So you sent the header with the hole back to Kooks for repair huh? Did they cover it?
Then they gave me a deal on Jet Hot too.
