How to check pushrod length/valvetrain geometry
07-13-2003, 12:55 PM
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Car: 89' T/A, 00' Firehawk
Engine: 406 Roller
Transmission: TH700R4 w/2800 stall
Axle/Gears: 3.23 Posi
How to check pushrod length/valvetrain geometry
Help. I ordered a adjustable pushrod length checker from comp cams, my question is, at what point should the rocker arm be in the middle of the valve? at zero lift, half lift, full lift? When I adjust it so its in the middle at zero lift, at full lift the rocker is way to the outer edge. Anyone know or have any pictures? Thanks
Jason
Jason
07-13-2003, 03:23 PM
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Car: 89' T/A, 00' Firehawk
Engine: 406 Roller
Transmission: TH700R4 w/2800 stall
Axle/Gears: 3.23 Posi
ok, let me get this straight, at no lift the roller on the rocker should be toward the intake, at half lift in the middle, and full lift towards the exhaust?
07-13-2003, 03:55 PM
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Car: 89' T/A, 00' Firehawk
Engine: 406 Roller
Transmission: TH700R4 w/2800 stall
Axle/Gears: 3.23 Posi
7.20 looks really good, 7.250 is ok but hangs off to the exhaust side a little far. What surpirses me is, comp cams recomends a 7.30 pushrod and I have protopline heads which have .100 longer valves requiring a longer pushrod. the 7.20 is .200 shorter than what I thought i should be running.
I guess thats why you check these things
I guess thats why you check these things
07-15-2003, 02:20 AM
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Car: '85 Z28
Engine: 305
Transmission: WC T5, 3.23 posi
Originally posted by LilJayV10
ok, let me get this straight, at no lift the roller on the rocker should be toward the intake, at half lift in the middle, and full lift towards the exhaust?
ok, let me get this straight, at no lift the roller on the rocker should be toward the intake, at half lift in the middle, and full lift towards the exhaust?
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