need help on new engine build!!!
#1
TECH Regular
Thread Starter
iTrader: (11)
Join Date: Dec 2008
Posts: 407
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
i have a 6.0l bored .030 over, flat top pistons (stock stroke) with 5.3l heads ported and polished milled .060 and im having problems breaking springs. i have comp 7.4 pushrods and i think theyre the wrong size. can anyone help me out? also whats the compression ratio on the engine with this setup? thanks
Last edited by anheuserbusch08; 03-02-2010 at 08:42 PM.
#2
TECH Senior Member
iTrader: (8)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Ummm you mean you have 4.00 pistons in a 4.030 bore?? Get a PR checker cause those PR's are too long milled .060. Is the valvetrain noisy? I am pretty sure you are are bottoming out the plunger on the lifters and they will soon fail too. Also check the spring installed height....
What cam specs and springs????
What cam specs and springs????
#3
TECH Regular
Thread Starter
iTrader: (11)
Join Date: Dec 2008
Posts: 407
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Ummm you mean you have 4.00 pistons in a 4.030 bore?? Get a PR checker cause those PR's are too long milled .060. Is the valvetrain noisy? I am pretty sure you are are bottoming out the plunger on the lifters and they will soon fail too. Also check the spring installed height....
What cam specs and springs????
What cam specs and springs????
#4
TECH Regular
Thread Starter
iTrader: (11)
Join Date: Dec 2008
Posts: 407
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Ummm you mean you have 4.00 pistons in a 4.030 bore?? Get a PR checker cause those PR's are too long milled .060. Is the valvetrain noisy? I am pretty sure you are are bottoming out the plunger on the lifters and they will soon fail too. Also check the spring installed height....
What cam specs and springs????
What cam specs and springs????