head flow
#1
head flow
can anyone tell me stock for stock what are the flow #'s for 241 casting ls1 head and 243 ls6 head, and if the compression would be the same if both were mounted on the same motor?
#5
Originally Posted by ChucksZ06
10 to 1 vs 10.5 to 1. ls6 flow maybe 10 % more than ls1.
#6
Originally Posted by ChucksZ06
10 to 1 vs 10.5 to 1. ls6 flow maybe 10 % more than ls1.
#7
Originally Posted by 1999 SS
can anyone tell me stock for stock what are the flow #'s for 241 casting ls1 head and 243 ls6 head, and if the compression would be the same if both were mounted on the same motor?
Here is a thread that we posted on the other with stock 243 numbers from our bench:
https://ls1tech.com/forums/generation-iii-internal-engine/434815-what-do-cast-ls6-heads-flow.html
And here is a thread with the stock 241 numbers from our bench:
https://ls1tech.com/forums/generation-iii-internal-engine/434099-what-does-stock-ls1-head-flow.html
The 241 castings are 10-1 on a stock LS1 bottom end and the 243 heads aould be 10.5-1. The 241 heads have a 67cc combustion chamber and the 243's have a 64cc which will result in a .5 point gain in compression.