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Old 08-19-2014, 01:07 PM   #11
68GMCCustom
Truck and auto performance nut
 
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Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
Re: Trans options for carb'd 5.3

I'd put in an overdrive trans in if you can work it....unless your rear end has tall gears. That's one of the main reasons later model engines get the fuel economy they do...because at cruise the engines run just a little above fast idle speed.
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Kurt -

'68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy
'72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close
'06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD
'18 Kia Sorento - wife's econo-driver
'95 Chevy S10 - reg cab shortbed, LS, 4.3, auto...

my '68's powertrain and chassis build -links broken
A surprise phase - carb to efi -links broken
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