Re: V-8 Fuel Milage

[<mail@xxxxxxxxxxxx>]

I once put a 390 cfm Holley on a 84 Mustang Gt 5.0L.
It had unbelievable throttle response and would fry the tires like you would not believe.
I would think maybe the small valve heads and a TBI would be likely candidate for a good combo when looking for high MPG in a 360. It would likely kill the engine at any thing resembling high RPM, plus 4,000. The Mustang wouldn't go past 4200 RPM with the 390 on it. I only had it on a day so I don't know what mileage was with it.
Mark Price
mpriceAtwestco.net
Morgantown, WV
69 AMC rambler, 4.0L, EFI, 5 speed 
65 Ambassador Conv, 327 AUTO, Basketcase
01 S-10 CREWCRAP 4X4



---------- Original Message ----------------------------------
From: "Bruce Hevner" <scramblr@xxxxxxxxxxx>
Reply-To: mail-From-mprice-westco.net@xxxxxxxxxxxx
Date:  Wed, 11 May 2005 08:52:29 -0400

>Come to think of it I DID do some head swapping on my 343 Javelin one time. 
>I had taken the OE heads off to do some work on them and needed to get the
>car rolling again. All I had was a set of 290 heads I had taken in trade
>from a 290 AMX that I had installed a set of big valve heads on. 
> They were only on the car for a few weeks so I don't remember much other
>than it made a big difference in response and fuel mileage went up a few
>points (who cared back in 1969!!). I DO remember that I had problems getting
>the thing to shift at full throttle. I had modified the auto trans to shift
>at about 5000 RPM and those heads cut it back so much it had trouble getting
>there! Once it got to about 4500 I would have to lift the throttle a little
>so it would shift. Probably would have been perfect with a stock trans.
>  I think MOST engines back then were really to much of a trade off of
>trying to be good at the bottom end AND top end too. 
>Bruce Hevner
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