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LS7 Lifters with Pushrods question

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Old Oct 12, 2009 | 01:00 AM
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Default LS7 Lifters with Pushrods question

Hello,

I'm in progress to collect my parts to install Tsunami Camshaft on My Camaro SS 2001

I have all parts with me now ( Camshaft , Dual Springs , Oil pump with double roller , SLP pushrods 7.400 length )

I'm asking if the LS7 lifters will work fine with pushrods length of 7.4 ?

If not I have already purchase the pushrods .. if there is any aftermarket lifters that will work fine with the pushrods

Regards,
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Old Oct 12, 2009 | 08:11 AM
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Measure, probably you will need 7.375
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Old Oct 12, 2009 | 12:55 PM
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I'm running 7.4 with ls7 lifters and its fine. Valve train sounds good, no problems here.
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Old Oct 12, 2009 | 01:13 PM
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u can use a stock pushrod, however it is not recomended
Scoggin Dickey parts center told me that on here
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Old Oct 12, 2009 | 01:48 PM
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Originally Posted by wickedbluess
I'm running 7.4 with ls7 lifters and its fine. Valve train sounds good, no problems here.
x2.

Set mine @ .100 preload and valvetrain is pretty quiet.
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Old Oct 12, 2009 | 02:20 PM
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as far as i know, there is no difference in pushrod length. if you call gm and get the part number for the ls7 and ls1 lifters, they are the same. so...
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Old Oct 12, 2009 | 02:56 PM
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Originally Posted by 02SLOMARO
as far as i know, there is no difference in pushrod length. if you call gm and get the part number for the ls7 and ls1 lifters, they are the same. so...
Not so... see this... same part number for new part replaceing obsolete part.
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Old Oct 13, 2009 | 11:15 AM
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the ls7 lifters are deffo longer overall. i had to drop 0.025 on pushrod length to get the preload right. the engine sounded ok tho (quieter!) on the slightly too long pushrods i'd used previously with stock ls1 lifters, but moving to slightly shorter pushrods has made the preload right and hasnt increased valvetrain noise much.
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Old Oct 13, 2009 | 11:50 AM
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As always, and especially when you've got this many variables in the mix, you'll want to measure! It's a $20 investment that can save you more than that the first time you have to pay to ship pushrods back and forth!

http://www.texas-speed.com/shop/item...d=913&catid=51
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Old Oct 13, 2009 | 11:58 AM
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Originally Posted by chris-m
the ls7 lifters are deffo longer overall. i had to drop 0.025 on pushrod length to get the preload right. the engine sounded ok tho (quieter!) on the slightly too long pushrods i'd used previously with stock ls1 lifters, but moving to slightly shorter pushrods has made the preload right and hasnt increased valvetrain noise much.
Actually you are wrong the over all length of the LS7 lifter is the same as the LS1 lifter what makes the difference is the cup. It sits higher in the LS7 than the LS1. As a matter of fact look in here http://forums.corvetteforum.com/c5-t...ic-lifter.html and you'll have a better understanding of the lifters and the difference with pics to compare.
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