Re: [Amc-list] Looking for parts

[Wrambler242@xxxxxxxxxxx]

There's also someone over on the strokers list that runs a basically stock 4.0L with a very mild head port and 91 HO multiport efi in a 69 American that is very happy with it!!!............

Oh, wait, that's me :] 

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5

 -------------- Original message ----------------------
From: adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)
> " From: "Swygert, Francis G MSgt 436 CES/CECM" <Francis.Swygert3@xxxxxxxxxxxx>
> " 
> " I'll throw my two cents worth in on the 4.0L -- and basically agree with
> " the others. For another 10-20 hp get a 4.0L head and bolt that on. The
> " triangular ports on the distributor side need to be filled (they were to
> " rinse sand out, no matching ports on block) because they sit very close
> " to the edge of the block (the 4.0L block is about 1/8" wider on top).
> 
> this is true except for '87-up 258s, which have the same wide block as
> 4.0s.  they need nothing to take the 4.0 head.  another id point -
> they went back to 1/2" head bolts like the '60s-'70s, from the 7/16"
> of the early '80s.
> 
> " A 4.5-4.7L costs little more than a
> " stock rebuild. A budget stroker is just a 4.0L block/head/pistons with
> " 258 crank and rods -- and a carefully selected camshaft to make it run
> " right with the stock computer. You need to limit "running compression"
> " to close to stock. That means using a high overlap cam (compared to
> " stock 4.0L or 258) to reduce cylinder pressure. The various stroker
> " sites will list the recommended cams. Otherwise you need to have custom
> " pistons or modify stock pistons (deeper dish) to lower static
> " compression to 9:1 or less (stock 4.0L is 8.7:1).
> 
> you don't necessarily have to swap cams; there are two stock
> replacement piston alternatives.  the speed pro 677p have a larger
> dish than stock and give ~9.25:1 c/r in a std bore stroker.  this is
> not too much, but while the engine's apart you can reduce ping
> sensitivity by softening the sharp edges of the combustion chamber
> that don't touch the cylinder.  silvolite 2228 have a very thick deck
> and the dish can safely be milled deeper.  there's someone over on the
> strokers@yahoogroups list offering them; all up about half the $$ of
> custom slugs.
> 
> and also on strokers there's someone running a 4.5 with a 258 cam and
> reporting tremendous off-idle power, no ping.
> ________________________________________________________________________
> 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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