Trying to get 9.1:1 Compression
07-19-2009, 10:59 PM
#1
Trying to get 9.1:1 Compression Building a boost motor. Using the stock LS1 block, MLS Stock Head gaskets, Stock 241 heads. What cc Piston should I be looking at to get as close to 9.1:1 as possible.
Also, how are you guys figuring it? I was looking around on how to calculate it but didn't find much.
Thanks
Also, how are you guys figuring it? I was looking around on how to calculate it but didn't find much.
Thanks
07-20-2009, 08:10 AM
#2
TECH Senior Member
iTrader: (3)
Join Date: Apr 2006
Location: Western Burbs of Detroit
Posts: 6,524
Likes: 0
Received 1 Like
on
1 Post
b, s, gasket, cc's are needed and then just play around with the dish number.
http://www.race-cars.net/calculators...alculator.html
The above link should help
http://www.race-cars.net/calculators...alculator.html
The above link should help
07-20-2009, 08:15 AM
#4
TECH Senior Member
iTrader: (3)
Join Date: Apr 2006
Location: Western Burbs of Detroit
Posts: 6,524
Likes: 0
Received 1 Like
on
1 Post
Alright bro, I was bored so I gave you 60 seconds of my time
Assuming this is a 346 or 348 just fudge the numbers a couple thousandths
346 ex
Bore 3.898
Stroke 3.622
pistons -12 cc
cylinders 8
CC's - Not sure, so I plugged in 64
Gasket .056
Comes out to 9.15 to 1 compression
Someone correct me if I am wrong. The above also assumes that the pistons are coming out of the hole ZERO.
Assuming this is a 346 or 348 just fudge the numbers a couple thousandths
346 ex
Bore 3.898
Stroke 3.622
pistons -12 cc
cylinders 8
CC's - Not sure, so I plugged in 64
Gasket .056
Comes out to 9.15 to 1 compression
Someone correct me if I am wrong. The above also assumes that the pistons are coming out of the hole ZERO.
07-20-2009, 08:35 AM
#5
Building a boost motor. Using the stock LS1 block, MLS Stock Head gaskets, Stock 241 heads. What cc Piston should I be looking at to get as close to 9.1:1 as possible.
Also, how are you guys figuring it? I was looking around on how to calculate it but didn't find much.
Thanks
Also, how are you guys figuring it? I was looking around on how to calculate it but didn't find much.
Thanks
07-20-2009, 08:39 AM
#6
Alright bro, I was bored so I gave you 60 seconds of my time
Assuming this is a 346 or 348 just fudge the numbers a couple thousandths
346 ex
Bore 3.898
Stroke 3.622
pistons -12 cc
cylinders 8
CC's - Not sure, so I plugged in 64
Gasket .056
Comes out to 9.15 to 1 compression
Someone correct me if I am wrong. The above also assumes that the pistons are coming out of the hole ZERO.
Assuming this is a 346 or 348 just fudge the numbers a couple thousandths
346 ex
Bore 3.898
Stroke 3.622
pistons -12 cc
cylinders 8
CC's - Not sure, so I plugged in 64
Gasket .056
Comes out to 9.15 to 1 compression
Someone correct me if I am wrong. The above also assumes that the pistons are coming out of the hole ZERO.
Trending Topics
07-20-2009, 05:19 PM
#11
I'd go with Wiseco's new X piston set, Drew! They are a 2618 forging like many of their competitors, but have a radiused valve pocket to cut down on detonation, big thick top ring land, come with a steel top/napier 2nd ring set standard, coated skirts standard, and more!
We've got them on special currently!
That set will net you about 9.1:1 with a GM MLS and the stock 66ish cc chambers!
We've got them on special currently!
That set will net you about 9.1:1 with a GM MLS and the stock 66ish cc chambers!
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
