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View Full Version : bent pushrod, broken lifter = heads coming off

SLP IROC-Z
10-07-2011, 08:16 PM
made a little boo-boo at the track and over revved the motor, has a nice tick to it now, cylinder 5 intake pushrod was slightly bent, replaced it and misfire gone but tick still there. so looks like heads are coming off for lifters and some upgraded valve train parts. found a low mileage pair of 853s for cheap and thinkin about doing a real small aftermarket cam or rons old ls6 cam.
its always somethin!!:max:
KB93z28
10-07-2011, 11:05 PM
How did you over rev the motor?
ls6monte
10-07-2011, 11:08 PM
4:30 gears!!!!!!!!!!!!!!!!!!! lol
smokinss
10-07-2011, 11:45 PM
What did u set your rev limiter at?
SLP IROC-Z
10-07-2011, 11:55 PM
How did you over rev the motor?

misshifted went 2-1 @ wot
SLP IROC-Z
10-07-2011, 11:56 PM
What did u set your rev limiter at?

6200 don set it at
KB93z28
10-08-2011, 12:14 AM
misshifted went 2-1 @ wot

Ahh....Ok I figured this is what happened. I did this once in my car, luckily I was able to throw the clutch back in in-time haha
smokinss
10-08-2011, 12:47 AM
I see. I was gonna say just revving to 6200 shouldn't have done that.
ILuvPizzaTimes10
10-08-2011, 01:38 PM
mechanical over rev as FAR worse then a high rpm on the limiter. sucks!! ive done 3-2 a couple times. locked up the rears and backfired a couple times..... so far so good.
SLP IROC-Z
10-08-2011, 01:50 PM
damn flimsy stock valve springs. pac1218s, chromemoly pushrods, ls7 lifters and she should be good. almost 119k on her now time for a freshin up.
ZFreie
10-08-2011, 02:13 PM
damn flimsy stock valve springs. pac1218s, chromemoly pushrods, ls7 lifters and she should be good. almost 119k on her now time for a freshin up.Port the heads...and put a bump stick in it
84ta406
10-08-2011, 02:54 PM
If you want I can clean up the heads for you a little.
ILuvPizzaTimes10
10-08-2011, 03:37 PM
if you were think of ported or better heads? shouldnt you atleast get headers? i still think you should leave it "stock" and see just how fast you can get it with "free" mods!!!
84ta406
10-08-2011, 03:44 PM
I just meant clean up the castings really. Maybe port the stock exh. manifolds?
941LE
10-09-2011, 01:33 AM
i still got some stock ported manifolds laying around with a SLP Y
SLP IROC-Z
10-09-2011, 04:27 PM
if you were think of ported or better heads? shouldnt you atleast get headers? i still think you should leave it "stock" and see just how fast you can get it with "free" mods!!!

thats what i was thinking, stock cam and stock 853s. dont have money for headers and still think it can go quicker the way it sits with a good clutch. after replacing that bent pushrod the car felt like it ran even better than before.