Are LS7 lifters gonna work with my build ?
07-31-2014, 10:56 PM
#1
Launching!
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Are LS7 lifters gonna work with my build ? Are new LS7 replacement lifters gonna work,i have been hearing the horror stories about them only reving to 6600-6700 on the dyno ?
New build,Motor i have is a 402LS
Callies compstar 4.00" crank
Callies compstar 6.125" rods
wiseco forged pistons 4.005,-8cc
PRC LS3 cnc heads,ss valves,prc 675"double springs,flow 360+ at 600"lift
Stock GM rockers with tru union upgrade
Holley hi-ram intake,102mm,and TB
10.8 compression
Cam is a bullet 249/269 dur,650/650 lift,113lsa
I plan to shift this motor 7000+
New build,Motor i have is a 402LS
Callies compstar 4.00" crank
Callies compstar 6.125" rods
wiseco forged pistons 4.005,-8cc
PRC LS3 cnc heads,ss valves,prc 675"double springs,flow 360+ at 600"lift
Stock GM rockers with tru union upgrade
Holley hi-ram intake,102mm,and TB
10.8 compression
Cam is a bullet 249/269 dur,650/650 lift,113lsa
I plan to shift this motor 7000+
08-01-2014, 11:18 AM
#4
With that much money in an engine, I sure wouldnt trust them.
Could easily become a mistake worth thousands and thousands of dollars.
Call a few shops and ask what Morel they recommend, and install them.
$600 insurance
Could easily become a mistake worth thousands and thousands of dollars.
Call a few shops and ask what Morel they recommend, and install them.
$600 insurance
08-01-2014, 06:42 PM
#6
DO NOT USE THEM!!! I posted a thread where I had that the roller separated and then after a whole rebuild and 3k miles later I had another one collapse and tonight I pulled the head to pull out the lifter........it will not come out.....FML I will never ever recommend nor use LS7 lifters....
09-20-2014, 12:16 PM
#7
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I had an LS6 lifter go a few years ago. At the time the car had a little over 100k. LS7 lifters went in their place. I havent had one issue. I now have a 418ci LS3 about to go in. I plan on using them there as well. Ok, with that said....this will be a street machine and wont hardly see a track. Anywhere from 6500-6700rpm at the most for my application. And even then, that wont be an everyday occurance. A motor where you plan to spin it out to 7000+ is gonna need a stronger lifter.You may want to take a second look at the rest of your valvetrain as well with that sort of rpm if you plan to see the track alot.
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09-20-2014, 01:02 PM
#8
Launching!
Investing in a high end lifter would be worth every penny IMO.
If you install those LS7 lifters (knowing in the back of your mind that you were already concerned about them) and one of them should fail and ultimately grenade your entire short block then you'll spend the rest of your days saying "I should have gone with....."
Don't do that to yourself.
If you install those LS7 lifters (knowing in the back of your mind that you were already concerned about them) and one of them should fail and ultimately grenade your entire short block then you'll spend the rest of your days saying "I should have gone with....."
Don't do that to yourself.
Last edited by FLYZNTN; 09-20-2014 at 01:38 PM.