401 complete, now I need ideas on a 360?

[80cjinnc]

Well I finished my 401 and made one race to test and tune before the end of the season. I was really happy with it and figured with a little tweeking here and there I would be set for this summer. That was until yesterday, I heard the track I was wanting to start going to have made a new rule saying that 390 and down is a small block but a 401 is a big block and has to run in that class? I guess a 400 Chevy should also be a big block then right? Anyway I am now looking at taking the 401 out and building a 360 or 390, any ideas? I have heard that you can take a 360 and fit it with alot of different parts and build them up pretty good, I will need to pull 14 inches of vac. at 800 RPM to stay in my current class other than that and of course on nitrous and on carb. I am thinking of building the 360 because if they change the rule again next year a 390 really did not come in a CJ but a 360 did. Any Ideas?????

[duckbone]

Grind off the 401 and weld you a 390 bead on it.

[80cjinnc]

I like your way of thinking....

[donwag]

"390 really did not come in a CJ but a 360 did. "

Don't think so. CJ's never came with a factory 360. They did come wth a factory 304.

[80cjinnc]

Well thats good to know, I thought they came in some cj8's but I guess not. Well I will just have to hope they stick with rules they have now then anything but a 401 is ok. Thanks for the info.

[dan58]

IIRC, scramblers all has the 4.2L.

[RAMBLINFSJ]

Grind off the 401 and weld you a 390 bead on it.

That exactly what I was thinking.

[BREK]

Heck just grind the 401 off of it & tell them it's a service block

[tufcj]

Take a 360 block, bore it to 4.165" and use the 401 parts. Nobody will know the difference unless they tear it down and measure. It ain't cheatin' unless you get caught.

Bob
tufcj

[tarior]

First off, get rid of that Fram filter!

Second, if you grind off the 401, how are they going to know? If they don't do tear downs, then no worries. I highly doubt that anybody on the tech crew knows jack diddly sh!t about AMCs.