Thread: 3.8 instead of 3.4??

So I plan on getting headers soon, and I was wondering if I should stay with the 3.8 and pump up the timing or go to the 3.4. I thought I remember hearing something like that by someone on here. I don't want to have to worry about kr in the winter, and it sounds like quite of few people are still having kr problems. I know this could probably be cured with a better tune. Anyways, I plan on going to e85 later down the road and will have the supercharger port and polished.

I'm pretty sure you were the one I heard saying to leave the 3.8 on, but I didn't want to start trowing words in people's mouths lol.

I probably won't do headers till Christmas break or even spring break. I've been so busy lately since I switched to Industrial Engineering.

I put a 3.5 in without exhaust mods (I am 1100m above sea level), pulled timing to remove kr. I am sure a combinatioin of pulley, and tuning would help the engine alot with the headers. I have headers ordered, just need time to install them.

Go modular and start with a 3.4

I've got headers with a 3.4 and with temps near freezing, no issues as of yet. Totally stock blower and engine internals. I see a blip of KR here and there but I do no matter the temp, likely false KR.