Valvetrain issue I need help bad
#1
Staging Lane
Thread Starter
iTrader: (1)
Join Date: Apr 2012
Posts: 57
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Ok setup is a 408 ls1 with trickflow heads. Ls7 lifters yella terra rockers comp 251 270 .638 .596 PAC 1208 springs with 1.79 installed height. Car is making great power. Car peaks at 6850 no matter what we do. I have spent over 3000 dollars trying to chase this issue but now I'm fed up. Put a stock rocker on it with trunnion upgrade didn't work put thicker pushrods on it didn't work change springs and shim them didn't work. Change cam to bullet grind didn't work. Do y'all think the ls7 lifter can't keep up with the amont of spring pressure I have in it. Please input on this.when it peaks it falls off like a rock
#2
Staging Lane
Thread Starter
iTrader: (1)
Join Date: Apr 2012
Posts: 57
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Ok setup is a 408 ls1 with trickflow heads. Ls7 lifters yella terra rockers comp 251 270 .638 .596 PAC 1208 springs with 1.79 installed height. Car is making great power. Car peaks at 6850 no matter what we do. I have spent over 3000 dollars trying to chase this issue but now I'm fed up. Put a stock rocker on it with trunnion upgrade didn't work put thicker pushrods on it didn't work change springs and shim them didn't work. Change cam to bullet grind didn't work. Do y'all think the ls7 lifter can't keep up with the amont of spring pressure I have in it. Please input on this.
Put a mast intake on it same thing also.
Trending Topics
#8
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Would not be he first time I have seen that happen with stock lifters. We could not keep a stock LS6 cam stable with HS 1.8RR without going to a short travel lifter. PAC-LFT106-LS.
#12
Staging Lane
Thread Starter
iTrader: (1)
Join Date: Apr 2012
Posts: 57
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
7500 is what i am aiming for the lobes on the comp cam was very aggressive lobes and and the new cam from bullet is on not so aggressive lobes. i have trickflow heads with ferrea valves 2.100