LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

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Old Jul 6, 2006 | 11:21 PM
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Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

Is it necessary or a good idea to upgrade the pushrods to a hardened one. I belive 96 did not come w/ hardened ones like the early years. What do you suggest? Don't need anything wild as I am just using Lt4 springs and GMPP 1.6 rr's. Stock length of course.
Old Jul 6, 2006 | 11:32 PM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

Self Aligning don't need hardened... Non Self Aligning do..
I believe the GMPP's to be SA..
Old Jul 7, 2006 | 08:09 AM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

I still bent some with my Crane rockers. If you can afford it now do it, if not next time you have $100 to spare get some. Eventually you will wish you had them. I bent several and then finally got the trick flow ones from Summit.
Old Jul 7, 2006 | 08:37 AM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

If you're using guide plates and non-self aligning rockers then you will need them. If not, then it's your choice.
Old Jul 7, 2006 | 08:52 AM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

i went with them, several 7000 rpm blast and 50k on the motor with no issues..... id buy them if i where u just as insurance
Old Jul 8, 2006 | 09:38 AM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

What kind should i get? does gmpp sell them? Should I just get lt4's?
Old Jul 8, 2006 | 09:51 AM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

i have the comp's with guide plates
Old Jul 8, 2006 | 12:59 PM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

Stock length is 7.2" Anyone know the diamiter?
Old Jul 8, 2006 | 01:26 PM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

man, i dont remember..... sorry
Old Jul 8, 2006 | 02:52 PM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

Stock should be 5/16" diameter.
Old Jul 8, 2006 | 05:53 PM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

Do you mean hardened pushrods or chrome moly? There's a big difference.
Old Jul 8, 2006 | 09:50 PM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

Originally Posted by joe-96z1le
Do you mean hardened pushrods or chrome moly? There's a big difference.
I dont know, all I know is hardened pushrods are better and since its a manual If I miss shift or over-rev hopefully they won't bend as easy.

Also The comp cam ones I found where 7.195" where as stock is 7.2" are those close enough? Will you ever find 7.2"?
Old Jul 8, 2006 | 11:27 PM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

If your P/V clearance is close ya may want the PR to bend if ya miss a shift instead of punching holes in the pistons with the valves.
Old Jul 8, 2006 | 11:41 PM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

Originally Posted by 1racerdude
If your P/V clearance is close ya may want the PR to bend if ya miss a shift instead of punching holes in the pistons with the valves.
I actually did think about that, I guess you have to weigh both sides:

if the springs are good enough they really should bind so there shouldnt be any piston-valve contact if you overrev, I belive the springs are what cause that in an over rev like that, am i wrong?.

And if a pushrod bends and breaks some **** it sends metal peices in the motor.

Don't know which way is better...Anyone else?

I have stock internals besides 1.6 rr's. so i dont know about p/v clearance.
Old Jul 8, 2006 | 11:57 PM
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Re: Hardened Pushrods for a 96 Lt1 w/ 1.6 rr's? Ya or Nay

Originally Posted by Jazsun
I actually did think about that, I guess you have to weigh both sides:

if the springs are good enough they really should bind so there shouldnt be any piston-valve contact if you overrev, I belive the springs are what cause that in an over rev like that, am i wrong?.

And if a pushrod bends and breaks some **** it sends metal peices in the motor.

Don't know which way is better...Anyone else?

I have stock internals besides 1.6 rr's. so i dont know about p/v clearance.

Ya need to measure your P/V clearance. I only run 80/100 on my builds and coil bind ain't used for that.

PR metal is a whole lot better than piston metal and they probably will just bend so carry extra in the glove box.
With a stock short block ya won't miss too many shifts and it will be out for a redo.



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