@iamdub So you got me again to rethink some of my decisions. Reached out to Texas Speed and asked again about there recommendations and how they compute compression ration they sent me their link to the calculations:
When I plug in my numbers it spits out a compression ration of 10.565:1, which is different that the ratio of the Summit calculator of 11.1:1. Which also explains their recommendation of a slightly thinner gasket.
My numbers:
Bore Diameter: 4.03
Stroke Length: 3.622
Chamber Volume: 64cc
Piston Dome/Dish Volume: -2
Deck Clearance: .006
Gasket Thickness: 055
Gasket Bore: 4.1
Cylinders: 8
Compression Ratio: 10.565:1
Based on this, I can see why Texas Speed recommended a gasket thickness range that started lower than Summit Racing. The .055 gasket was in the middle of their suggested range and near the bottom of Summit. I'm think I could go a little thinner on the gasket. Thoughts?
Compression Ratio Calculator
Texas Speed & Performance is your one-stop shop for all LS and Gen 5 LT1 & LT4 performance parts and engines! We are among the largest LS and Gen 5 LT1/LT4-specific shops in the country, and we machine and assemble all of our engines, camshafts, and Precision Race Components cylinder heads in...
www.texas-speed.com
When I plug in my numbers it spits out a compression ration of 10.565:1, which is different that the ratio of the Summit calculator of 11.1:1. Which also explains their recommendation of a slightly thinner gasket.
My numbers:
Bore Diameter: 4.03
Stroke Length: 3.622
Chamber Volume: 64cc
Piston Dome/Dish Volume: -2
Deck Clearance: .006
Gasket Thickness: 055
Gasket Bore: 4.1
Cylinders: 8
Compression Ratio: 10.565:1
Based on this, I can see why Texas Speed recommended a gasket thickness range that started lower than Summit Racing. The .055 gasket was in the middle of their suggested range and near the bottom of Summit. I'm think I could go a little thinner on the gasket. Thoughts?