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LT1-LT4 Modifications
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Old 12-20-2007, 11:07 PM   #1
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Default Pushrods & lifters???

Witch is the best pushrods and lifters to use with the GM 350 hot cam kit? I was thinking about the GM lifters #12371042 and GM pushrods #12371041. Would this be a good setup or would I need to go with somthing else?
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Old 12-21-2007, 12:38 AM   #2
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depending on your miles i wouldnt worry about lifters with that cam. i would suggest 1 piece chromoly push rods. dont cheap out on pushrods
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Old 12-21-2007, 03:29 AM   #3
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depending on your miles i wouldnt worry about lifters with that cam. i would suggest 1 piece chromoly push rods. dont cheap out on pushrods
Chrome-moly pushrods for a hotcam kit? Really? It's a very mild camshaft with self-aligning rockers!

----------------
1) To the OP, I'm not sure where you got those part numbers. As far as I can ascertain, those pushrods are 7.178" in length and non-hardened. Those are not ideal. Factory pushrods are 7.200", so the missing ~22 thousandths might have a minor effect on rocker geometry. If you're going to spend the money might as well at least get hardened steel.

Standard $40 hardened pushrods from Comp will do just fine -- I ran the hotcam that way for 3 or 4 years (with stronger valvesprings). If you've a 1994-1995, look for a dimple along the shank of your factory pushrods -- they may be hardened from factory. You can test for straightness on a glass table + a flashlight. If they're straight, reuse them.


2) If your factory lifters aren't in too bad of shape, they can be reused, though it is not a horrible idea to replace them (as they've been worn into the old camshaft).

The lifter part number you listed is actually for a full kit with link-bars/spider retainer and whatnot, which is unnecessary unless you're missing those parts. Otherwise, the kit looks like it'll work just fine. The lifter part number alone appears to be 17120735, if you want to order the lifters separately.
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Old 12-21-2007, 04:24 AM   #4
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Yeah I would say some chromolys wouldnt hurt..its added strength what the worst that could happen
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Old 12-21-2007, 07:39 AM   #5
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With that cam, new factory pushrods/lifters should be sufficient.Add their 1.6 s/a roller rockers also and you should be good to go.
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Old 12-21-2007, 12:37 PM   #6
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Standard $40 hardened pushrods from Comp will do just fine -- I ran the hotcam that way for 3 or 4 years (with stronger valvesprings).


Do you know the part # for those. Is it 249-7808-16?
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Old 12-21-2007, 10:47 PM   #7
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Do you know the part # for those. Is it 249-7808-16?
I'm sorry, I don't recall the exact part number I used. However, those you listed will work just fine. Hardened, 5/16" diameter, ~7.200" length (within five thousandths anyway). ***[Edit] -- This is assuming you'll be running a factory setup. If you mill the heads or deck the block, you'll need to order different length pushrods to correct for shifts in valvetrain geometry. This is done by use of a pushrod-length checker tool.

To clarify my previous statement, the chrome-moly pushrods will of course work if you want to go that route -- they are very high quality (lightweight and virtually indestructible). It's just that they are expensive and ("arguably") overkill for your intended setup. I'm using a set of CCA-7935-16 pushrods on a .660" lift solid roller camshaft, and they are holding up great.

Your choice.

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Old 12-21-2007, 10:47 PM
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