Re: [AMC-List] Needing a 4.0 Liter Head for Conversion from 4.2-(86 CJ7)

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: "Munro, John" <John.Munro@xxxxxxxxxxxxxxx>
" 
" Needing a 4.0 Liter Head for Conversion from 4.2 Liter
" 
"  
" 
" 1991 or newer. These are high port, H.O. (High Output) heads used on all
" 4.0L Engines.
" 
"  
" 
" Head casting # 7120
" 
"  
" 
" Hopefully this info is correct

so far.

#7120 was used '91-5.  #0630 was used '96-8 and is nearly as good;
#0331 '99-up and is widely considered crap: small ports and prone to
cracking.  only plus: coil pack mounting bosses for dis.

the intake that goes with the #0331 is better than the '91-8; some say
it's good for 20hp - and a like amount of torque - just by itself.  it
still fits all ho heads.
________________________________________________________________________
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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