Different pushrod lengths between intake and exhaust
Thread Starter
Staging Lane
Joined: Dec 2015
Posts: 71
Likes: 2
From: Roy, Utah
Different pushrod lengths between intake and exhaust I just received my block back from the machinist. They decked the block, and resurfaced the heads.
LQ4 block bored .030, 317 heads. The camshaft installed is the Tick Performance Blower stage 2. Stock rockers with Straub upgrade. LS7 lifters. I am using the pushrod checker and I have determined the #1 cylinder intake valve zero lash is 7.225. The exhaust zero lash is 7.150. I have not checked any other cylinders yet. Is this possible? The machinist stated he only took off what was needed to clean and ensure the surfaces were square and flat. How do I order something like this?
LQ4 block bored .030, 317 heads. The camshaft installed is the Tick Performance Blower stage 2. Stock rockers with Straub upgrade. LS7 lifters. I am using the pushrod checker and I have determined the #1 cylinder intake valve zero lash is 7.225. The exhaust zero lash is 7.150. I have not checked any other cylinders yet. Is this possible? The machinist stated he only took off what was needed to clean and ensure the surfaces were square and flat. How do I order something like this?
Thread Starter
Staging Lane
Joined: Dec 2015
Posts: 71
Likes: 2
From: Roy, Utah
Ok So I think I got it figured out. I must not of pushed the lifters out of the tray. I gave the pushrod a good push and heard the lifter fall out. So I measured again and then I got 9.25 turn on the pushrod length checker. This was zero lash. Does that sound right?
