Quote:
Originally posted by Speed-Swede:
Hi there everyone!

I have som questions about such a conversion.
1:As far as I understand the 258 crank drops right in the 4.0 block Y/N?
YES

2:If You use stock pistons with the 258 crank and rods,what comp-ratio do You get? Would like around 10-11 c/r,we do have 98 oct. gasoline here
Approx 9.7--every .010 milled off is approx .2 in compression gained

3:What trans to use with this combo,does the 904 fit to the block?
Yes, 904 fits. No difference in bolt patterns

4:Can I use my Crane-camshaft from the 258 in the 4.0 ??
YES, just be sure to check for proper lifter pre load. Pushrod length may need to be adjusted.

5: I guess that my hedders won't fit the 4.0 head and that the same goes for the Offenhauser-intake I currently uses Y/N???
Headers will not fit. I HAVE heard of people adapting the headers to work. Depends on you skills. Cylinders 3 & 4 are the concern. Check all for port alignment. Intake could be made to work. Alignment dowels holes will have to be moved on the intake to make proper port alignment.

I do have more questions about this subjet so those who knows anything about this,feel free to help me out here,there are not so many that done this to an AMC-engine in Sweden,probably none to be exact...
I'll help in any way I can. Got your comp ratios from this site http://www.jeep4.0performance.4mg.com/ Easier to get the general specs here. Dino has done a great job of documentation.

Since I live in Sweden and parts are expensive to buy here I would like to get it right the first time instead of using the good old trial/error-way of finding out this stuff.

Zorry if the zpelling iz a little off zome time,but I try to get it right.
Mine is not that much better!

The engine will go in to this: Straight-6 Roadster The page is in Swedish,but You all know what they say:A picture says more than a thousand words...
Here is mine.

Thanx : Speed-Swede

Have you been beaten by an inline, Lately?