> -----Original Message-----
> From: Michael Maskalans
>
> I'm seriously thinking of trying to get a race rig together for the new
> King of the Hammers stock class.
>
> The engine has to match model and year, suspension of stock type,
> wheelbase within 3", full frame full body. So I'm really thinking about a
> Grand Cherokee to get a good wheelbase, link suspension, and a V8.
>
> The question is - I have a '99 Grand in my driveway. I could get a 4.7
> for it and run that. Or I could go for a '98 Cherokee and run a 360.
>
> These races are both rock crawling and desert racing.
>
> Motor probably would be pretty stock for the first season but it would be
> nice to have the option to "build" it. I know I can go nuts on the
> 318/360 with roller valvetrains, M1 intakes, stroker cranks... What's out
> there for the 4.7?
>
>
> I really don't know much about the 4.7. Or the 5-45rfe that may end up
> behind it. Beefy enough to race? would a 46RE bolt up to a 4.7? I don't
> know if bellhousing patterns changed....
>
> Mike
I've been drag racing my 2000 4.7L GC 4x4 since it was new. It's held up
just fine. I don't know how it would stack up against a tweaked 360 '98 GC
but it handles stock 360 Dak R/T's just fine. With a 2001 4.7L throttle
body (a little larger than the '99-00) and a K&N FIPK it has run a best of
15.teens. That is quicker than my '92 Dak 318 was when basically stock.
You could go with a Gibson cat-back and pick up some torque and hp. Headers
might help as well but I don't personally know.
Mine came with the 45rfe but with a computer flash it could be a 5-45rfe.
(extra overdrive ratio) I chose not to go that route as I've found mine
likes a little rpm for best mpg. I've been on track, on road, off road, and
trailered my Dak 6000 miles with mine and so far it's done everything well
with no ill effects.
You might also want to look into supercharging a 4.7. Kenne-bell used to
have a system but by now others might as well.
Ray
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
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