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Thread: Pushrod Lengths
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01-26-2009, 02:10 PM #1
3.4L to LT1 Swapper
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Pushrod Lengths
Hey guys,
Under what circumstances would one need to get custom/measured pushrod lengths? I bought Comp Cam's hardened push rods and I've heard a few say "Did you measure the pushrod length?"
I just figured the regular height was fine.
- Brian Meissen -
"Magic Man" - LTxTech
Owner - Michigan FBody Association
1994 Chevrolet Camaro "Red Alert" [ LT1 Transplant ]
2022 Chevrolet Camaro LT1 RS "Cherry Bomb 6.2"
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01-26-2009, 02:16 PM #2
Pr0jekt Turb0?
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If you have had the heads/block resurface... went with an aftermarket head casting, changed to a different kind of lifter.
Originally Posted by meissen
Hey guys,
Under what circumstances would one need to get custom/measured pushrod lengths? I bought Comp Cam's hardened push rods and I've heard a few say "Did you measure the pushrod length?" I just figured the regular height was fine.
Those are situations where you will need to check to make sure the valve geometry will be correct.
I have LS7 lifters and stock height worked for me (7.2)
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01-26-2009, 08:16 PM #3
LT1PWRD
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Sorry to hi-jack, but if 1.6 RR NSA were installed with guideplates, would stock length push rods be fine?
97' Camaro Z28 30th.
- Not stock, but still too stock for my likings.
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01-27-2009, 07:57 AM #4
3.4L to LT1 Swapper
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Perfectly fine question to ask - that's exactly the same situation that I'm in. 1.6 RR NSA with guideplates and my heads were milled .01
- Brian Meissen -
"Magic Man" - LTxTech
Owner - Michigan FBody Association
1994 Chevrolet Camaro "Red Alert" [ LT1 Transplant ]
2022 Chevrolet Camaro LT1 RS "Cherry Bomb 6.2"
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01-27-2009, 07:09 PM #5
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With just 1.6 rockers, stock length is probably fine, but I would still measure them to be absolutely sure. If you plan on spending $80+ on hardened pushrods, might as well make sure they are the right length. The tool is only $20 from Comp.
And I would recommend Trickflow chromemoly PR's over Comp. They are exactly the same, except half the price.1996 Camaro Z28
LE2 Heads, LE ported intake, LE emissions cam, Comp Pro Mags, 37# Injectors, 58mm TB
M6 Conversion, T56 by Six Speeds Inc, RAM Powergrip, McLeod Adj. MC, B&M short throw
Kooks LTs, Loudmouth, K&N CAI, MSD (wires, coil, 6AL), BMR PHR, UMI SFCs
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01-27-2009, 08:06 PM #6
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I use the comp adjustable pushrod and color the top of the valve with a Sharpie then rotate the engine a bit and see if it wears in the center.
Lalo aka "ZipTie"
95Z28 A4 Daily Driver
95TA M6 Rarely Driven
06 CBR 1000RR
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