Re: [Amc-list] Big motor small heads,,,

[Wrambler242@xxxxxxxxxxx]

This has me wondering if moving the 7120 4.0L head to the stroker and then finding a late model 331 casting for the mpg car would not be a good idea for a tad better fuel economy?
  I have the cast manifolds and could run small 2" duals for that old time flair too...

Hmm, thinking, thinking, always thinking...

--
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: "Bruce Hevner" <scramblr@xxxxxxxxxxx>
> I tried another little experiment with a Chevy Caprice wagon I had one time.
> I think the thing weighed about 4300lbs. It had a wore out 305 in it so I
> decided to see how much mileage I could get out of it.
> Built a 350 using 305 heads on it. Normally this would give you a LOT more
> compression than is good except,,, I took a set of TRW flat top pistons (the
> ones that are ½? thick on the top,,NO KIDDING!) and dished them out to give
> me 8.5 compression with the pistons at zero deck.
> The 305 heads I used were the early two barrel with super small 1.700
> intakes! I wanted the most velocity possible as I was going to have the
> trans shift @ 4300rpm. It had an R700 overdrive with lockup converter and a
> 2:73 rear. I ran 235x15x75 tires for even less RPM. I used an Isky
> Mile-A-More cam which had an RPM range from IDLE (no kidding) to 4000 or so.
> This thing had one of those electronic feedback Quadrajets on it with an
> aluminum intake. I used stock exh manifolds with a 2 ½? single exhaust and
> low restriction (quiet) muffler.
> 
> That combo was pretty close to what I was looking for. It would actually
> spin the tires from a dead stop if you just nailed it! Had GREAT throttle
> response and torque. The torque curve was just a TAD short as you could FEEL
> it start to come off the curve just before it would shift. Probably 5 or 10?
> more duration would have been perfect.
>  It would get about 23MPG @ 65mph and 18mpg @,,,,,, 80mph!!!! With that
> thing locked up in overdrive it was just loafing @ 80 and was solid as a
> rock at that speed!!! We LOVED that car for trips and put 120k on it (total
> on body was 250k.). Just shows to go ya you CAN get pretty decent mileage
> out of V-8s if they?re done right!
> But HEY,,, that?s just me!!
> Bruce Hevner
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