View Full Version : Pushrod length question
alamantia
04-30-2010, 11:30 AM
If I have a stock LS1 with stock parts (7,400" pushrods) If I were to mill 0.035" off the deck of the heads and put them back on the car can I use the same pushrods?
85berlinetta
04-30-2010, 03:23 PM
Ive never put together an ls1, but I milled .050 off of the heads on my gen 1 350, and Im using the stock pushrods. If the valves adjust the same way the older motors do, Id say you can get away with that.
RamAir95TA
04-30-2010, 03:57 PM
I would use a 7.35" pushrod. It's always better to be a little on the short side than the long side.
sweetbmxrider
04-30-2010, 04:42 PM
I would use a 7.35" pushrod. It's always better to be a little on the short side than the long side.
i was going to say the same but i thought the ls style rockers were different with setting preload and whatnot.
LTb1ow
04-30-2010, 08:20 PM
i was going to say the same but i thought the ls style rockers were different with setting preload and whatnot.
Same as any full bodied roller rocker... just torque em down.
sweetbmxrider
05-01-2010, 11:23 AM
Same as any full bodied roller rocker... just torque em down.
i meant more like a shaft mount where exact pushrod length isn't necessary.
deadtrend1
05-02-2010, 02:22 AM
The stock one will work just fine. 7.35 may be short. Lt1's and gen 1's have adjustible rockers. Ls1's do not
alamantia
05-03-2010, 07:31 AM
LS1's use a rocker stand where as older motors you torque the nut down on the rocker.
TEKHAWK
05-03-2010, 05:50 PM
LS1 rocker bolts are torqued to 22 Ft. Lbs. with 3/4 to 1 1/4 turn of preload.
Slow-V6
05-03-2010, 10:33 PM
Is there a calculator for the pushrod length? I am doing a cam swap and also wonderring pushrod length on my LS1.
sweetbmxrider
05-04-2010, 07:17 AM
adjustable pushrod length checker
deadtrend1
05-04-2010, 10:17 AM
adjustable pushrod length checker
:nod:
the only way to be sure.
alamantia
05-04-2010, 11:43 AM
http://www.mitutoyo.com/producttyperesultform.aspx?type=1331
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