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nico · 03-25-2008, 06:26 PM

1984 SWB
383 - around 400hp
Manual Valvebody TH400
2900 stall converter
3.73 gearsl/Detroit Locker
275-60-15's

8-10 mpg.

If all I wanted was fuel economy, I would do a 283 or 302 with a two-barrel Holley, 200R4, 3.08's, should be good for over 20 mpg on the highway...

03-25-2008, 06:26 PM	#5
nico Registered User Join Date: Nov 2006 Location: Marietta, OK Posts: 153	Re: Fuel efficiency...what MPG do you get? 1984 SWB 383 - around 400hp Manual Valvebody TH400 2900 stall converter 3.73 gearsl/Detroit Locker 275-60-15's 8-10 mpg. If all I wanted was fuel economy, I would do a 283 or 302 with a two-barrel Holley, 200R4, 3.08's, should be good for over 20 mpg on the highway...