SC/TA

Just finished my 383, I am curious how close my old tune will be. The cam is real close and the compression is about the same as my old 350. I have not drove it yet but it starts good and is very responsive, also idles good. I will be getting a dyno tune soon, but would like to run what i have untill then if possible. I have tunercat and can make some changes if there is something that needs to be changed based on the fact it is a 383 instead of 350.
Thanks for any help.

MikeGyver

Adjust the cylinder volume parameter as requried. If you're running closed loop with a MAF there isn't really much you'll have to do, especially with a similar compression ratio/cam. It may be beneficial to increase your closed TPS and crank timing a bit.
If you're running speed denity mode, the VE tables will probably be quite different; I'd run them through VEmaster several times until your short term fuel trims are dialed in.

SC/TA

Thanks, I have drove it a few times since i posted this. The old tune is working fine for daily driving, I am waiting untill i get a dyno tune before i lean on it to hard.