Re: 4.0 iron exhaust on 199 [was: Best 4.0 combo]
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Re: 4.0 iron exhaust on 199 [was: Best 4.0 combo]



Nah, get a 4.0L head -- ANY year is better than the 199-258 heads. The specs for the 4.0L and late 258 (81-89?) combustion chamber size is 64.45-67.45 cc. 

On August 17, 2005 andrew hay wrote:

> i guess if i was gonna get serious about this, i'd hunt up a late
> ['72-4] shaft rocker head or just swap over to a bridged-rocker one.
> both have smaller ports than the '60s head that flow better; iirc the
> main change is the port floors.  all heads '68-'76 have 66cc chambers;
> '64-7 are 56cc, '77-'80 are 74cc.
> 
> team it with an '80s water heated intake and mopar holley 2280 [bbd
> replacement]...
> ________________________________________________________________________
> 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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