okay, from a few of my other posts it was revealed to me that my SCR for my upcoming stroker build was a little too low (planned on a 10.6:1)...so i played around with the pistons and manged to up the sqeeze factor to 11.49:1 (that's if i managed to calculate it correctly ). my question is this: is that going to raise my dymanic CR too high to run on pump gas (93)??

AFR 225cc heads with 72cc chamber and a 243/249 .629/.629 112+2 Lsa cam.

 

How did you get 11.49 with a 72cc head? Explain your motor setup.

 

wow- if your numbers are correct that thing should be a beast- good luck

 

4" stroke, 4.125" bore, 6.125 rods, -1cc dish piston, .04 gasket thickness, 4.165" gasket bore, -.008" deck height*, 9.240" block height

*estimated, i had to get creative with this one, i stole this # from the lunati rotating assembly that i was originaly going to use. everything on my setup is the same minus the pistons, they're now -1cc dish instead of -17cc dish.

 

that combo should run great on 93.just guessing not knowing the timing events i'd say your dcr is in the 8.3x -8.5x range.

 

you would be safe with 93 octane.. anything higher than a 12:5-13:1 you would have to run 96+ octane

 

sweet, thanx for the replies guys, you're making my day here

 

woops!! typo!! it's actually 11.94:1 not 11.49:1

 

Should be a beast is right, JFI, you can edit your posts

 

https://ls1tech.com/forums/generation-iii-internal-engine/788460-my-engine-build-come-critique-me-compression-components-etc.html

Check out my setup.

11.27 scr/8.54dcr

347 with 72cc heads

 

nicely done specialized