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

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: farna@xxxxxxx
" 
" Early sixes had big ports, but had a tight 90* turn and don't flow as
" much as 4.0L heads on the intake side. Exhaust ports are pretty big
" too. At best you'd need to match ports and ramp the manifolds to
" prevent turbulence in the exhaust port to manifold intersection.

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