Push Rod Length - Suggestions wanted.
Thread Starter
Heel & Toe
Joined: Apr 2015
Posts: 20
Likes: 0
From: Detroit MI
Push Rod Length - Suggestions wanted.
I asked this in Tech but did not get any responses.
Gen III LS1. Stock Heads. Stock Lifters. TSP 228R, Dual Springs.
Using Comp Cams Push Rod Length Checker, I measured cylinders 1,3,2,4,6,5 Intake and Exhaust.
My longest measurement was 7.313" and my shortest 7.30". This is with no preload. I am looking for your suggestion on what PR length will be correct. Please refer to my table.
Is it best to lean towards more preload over less? How much preload is too much? I am trying to avoid sewing machine noise. (I have 7.40" TSP PRs but I want to verify these are good or if I should swap).
Pre-Load Average Push Rod Length
0.060 + 7.307 = 7.37
0.070 + 7.307 = 7.38
0.080 + 7.307 = 7.39
0.090 + 7.307 = 7.40
0.100 + 7.307 = 7.41
TSP Offers sizes:
7.350
7.375
7.400
7.425
7.450
Gen III LS1. Stock Heads. Stock Lifters. TSP 228R, Dual Springs.
Using Comp Cams Push Rod Length Checker, I measured cylinders 1,3,2,4,6,5 Intake and Exhaust.
My longest measurement was 7.313" and my shortest 7.30". This is with no preload. I am looking for your suggestion on what PR length will be correct. Please refer to my table.
Is it best to lean towards more preload over less? How much preload is too much? I am trying to avoid sewing machine noise. (I have 7.40" TSP PRs but I want to verify these are good or if I should swap).
Pre-Load Average Push Rod Length
0.060 + 7.307 = 7.37
0.070 + 7.307 = 7.38
0.080 + 7.307 = 7.39
0.090 + 7.307 = 7.40
0.100 + 7.307 = 7.41
TSP Offers sizes:
7.350
7.375
7.400
7.425
7.450
