Re: [Amc-list] Rebel Station Wagon upgrades- Brakes, 4.0, Auto O/D

[Wrambler242@xxxxxxxxxxx]

Last I looked at Jeepstrokers forum the forged pistons were still a bit of a mistery as to exactly what they do spec at!

IIRC, they are not quite as "ready to run" as we had hoped.
Still require decking and leave the compression slightly higher than we wanted.

I have not read over there recently, so I may be wrong.
KBB's website had some "fuzzy numbers" too.

Last, they were priced a little on the high side, almost placing them in the custom piston range.
Depending on the build many guys were saying they would spend the extra $$$ to do the piston exactly how they wanted.

YMMV.

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrac II
" I realize that death is inevitable.
I just don't want to be around when it happens! "

 -------------- Original message ----------------------
From: adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)
> " From: Frank Swygert <farna@xxxxxxx>
> " 
> " []
> " 
> " Stroking the 4.0L with the 258 crank and rods is the best option
> " for more power if the 4.0L needs rebuilding anyway.  It's not
> " quite that simple -- you either have to dish the pistons or get a
> " cam that will bleed off some cylinder pressure.  Either way works
> " about the same, though some think the cam solution a "band-aid"
> " fix (I don't -- just another way to skin a cat, and it's cheap
> " and easy if replacing the cam anyway).  You need bigger injectors
> " also, but that's about it.  Power with the bleed-off cam still
> " comes up to around 260-265, and you will lose about 2-3 mpg on
> " the highway, 3-4 in town.  That's what I lost when I went from a
> " stock 4.0L to a 4.6L stroker -- same driving style for both.  I
> " don't exactly baby my cars, but I'm not hard on them either.
> 
> silvolite now has an off-the-shelf 'stroker' forging for the 4.0, the
> kb944.  it lets you use the longer 4.0 rods on the 258 crank and gives
> a ~9.2:1 cr with zero deck height for better ping resistance.  they're
> available in +.030", +.040", and +.060", but i don't know about std.
> with these you should be able to run a stock 4.0 cam or even a milder
> 258 cam on regular gas.
> 
> dunno what they cost either, but you don't need a set of 258 rods [as
> cheap as they are] or a new cam to run them.
> 
> someone - either here or on strokers@yahoogroups - posted a link to a
> site that had delco style disc-type injectors, supposedly better than
> bosch style pintle-type that ford [and jeep?] uses, but i can't find
> it now.
> 
> " All the brakes interchange about the same, as Mark mentioned.  You
> " can use later Concord discs on the big cars, they work just fine.
> " They will heat up more than the thicker big car brakes, but
> " unless you plan on using this thing to tow with a lot it's
> " nothing to worry about.
> 
> i wouldn't be surprised if a concord wagon weighed pretty much the
> same as the rebel.
> ________________________________________________________________________
> Andrew Hay                                  the genius nature
> internet rambler                            is to see what all have seen
> adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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