what lifters
06-22-2011, 08:38 AM
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what lifters hey guys have a 2000 ls1 goin into a 69 camaro an i am putting the t-rex cam with harden push rods an big springs it calls for an 42 lbs injects. the help i need is would the stock lifters be ok r should i upgrade them were the motor is apart now i was goin to replace but dont know if i would keep stock are upgrade on them i looked at some but dont know which ones 
could u all give me some insite on some an what would u all do thanks.
could u all give me some insite on some an what would u all do thanks. 
06-22-2011, 08:46 AM
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What size pushrods? I'd upgrade so you don't have to tear it down if the stockers fail.. I had LS7 lifters which are beefier (cup is .060" higher though). Those I was not impressed with. I am putting my engine back together in the next few days with Comp Cams Pro Magnums lifters. Don't forget to give them a long oil bath prior to install!
06-22-2011, 08:50 AM
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LS-7 lifters will be your least expensive option. Decent lifter for the price. I went with the Morel Link-Bar lifter for peice of mind. Comp makes a decent lifter as well as Lunati. Really depends on how high you plan to Rev the motor and how much $ you want to spend. You will get many opinions about this question.... Good luck with your choice.
06-22-2011, 09:14 AM
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the push rods are Thunder Racing Heat Treated Chrome-Moly Pushrods, 7.400" (Stock length LS1) i dont think i can go to a tall lifter well the t-rex cam pushs the max on the valve train they aint a hair inbetween stuff after the cam is installed.
What size pushrods? I'd upgrade so you don't have to tear it down if the stockers fail.. I had LS7 lifters which are beefier (cup is .060" higher though). Those I was not impressed with. I am putting my engine back together in the next few days with Comp Cams Pro Magnums lifters. Don't forget to give them a long oil bath prior to install!
06-22-2011, 09:20 AM
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ill rev to 6-6500 i say but never over 7 i think my buddy shifts at 6750 in his 2000 ls1 race car on the track i am building it off what parts he ordered but i dont know was lifters he use an his over sea now. 
i dont want to spend alot but dont want to lose a motor lol
i dont want to spend alot but dont want to lose a motor lol LS-7 lifters will be your least expensive option. Decent lifter for the price. I went with the Morel Link-Bar lifter for peice of mind. Comp makes a decent lifter as well as Lunati. Really depends on how high you plan to Rev the motor and how much $ you want to spend. You will get many opinions about this question.... Good luck with your choice.
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06-22-2011, 09:33 AM
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If you do the LS7 lifters, thats the cheapest and slightly taller which means less valvetrain noise with the 7.4" pushrods. I say that because I've heard TR recommends that size, but ppl complain of all the noise and switch to a 7.425".
06-22-2011, 09:37 AM
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What size pushrods? I'd upgrade so you don't have to tear it down if the stockers fail.. I had LS7 lifters which are beefier (cup is .060" higher though). Those I was not impressed with. I am putting my engine back together in the next few days with Comp Cams Pro Magnums lifters. Don't forget to give them a long oil bath prior to install!
06-22-2011, 09:42 AM
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ill rev to 6-6500 i say but never over 7 i think my buddy shifts at 6750 in his 2000 ls1 race car on the track i am building it off what parts he ordered but i dont know was lifters he use an his over sea now. i dont want to spend alot but dont want to lose a motor lol
i dont want to spend alot but dont want to lose a motor lol
06-22-2011, 09:56 AM
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Op, seems you can't go wrong with the LS7s. I was merely giving a friendly heads up it may be a bit noisy with that size rods but you'll be good to go!
06-22-2011, 09:59 AM
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we both learned something new today 
now i need to find them for the cheapest price
now i need to find them for the cheapest price
OHHH ok - so its overall the same size as an LS1 but beefed up, right? That makes more sense, being that my 7.425" pushrods with the LS7 was still a bit noisy.
Op, seems you can't go wrong with the LS7s. I was merely giving a friendly heads up it may be a bit noisy with that size rods but you'll be good to go!
Op, seems you can't go wrong with the LS7s. I was merely giving a friendly heads up it may be a bit noisy with that size rods but you'll be good to go!
06-22-2011, 10:32 AM
#15
Yup, there was a thread on here a few weeks ago, where a guy (sorry, can't remember who) actually measured the two to compare the differences.
The ls7 lifter has the body going all the way around the roller where the ls1 lifter just has two tabs at the bottom of it holding the lifter in....that is the biggest difference I saw when holding the two up side by side
Ls7 on the left, ls1 on the right
The ls7 lifter has the body going all the way around the roller where the ls1 lifter just has two tabs at the bottom of it holding the lifter in....that is the biggest difference I saw when holding the two up side by side
Ls7 on the left, ls1 on the right
06-24-2011, 07:35 AM
#19
