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12-04-2012, 02:24 PM
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#1 |
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Registered User
Join Date: Dec 2012
Location: Tucson AZ
Posts: 6
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New Guy in Tucson
Hey All, New to the board. I have a '78 GMC 2wd long bed with a 454. Love the truck and it is in fantastic shape. Been in the family since 1980. Looking to make some modifications. I want to level it and lift it enough to clear 33's (get a little ground clearance for the areas I hunt and play in. I want to install a part time locker in the rear, should help me keep from getting stuck. Want to milk 14-17 MPG out of the 454, sitting at 10 now. Redo the interior with buckets and a console.
Liking what I see so far, hope to learn alot Eric |
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12-04-2012, 02:44 PM
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#2 |
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Registered User
Join Date: Nov 2012
Location: Salt Lake City, UT
Posts: 520
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Re: New Guy in Tucson
A 4 inch lift will clear 33's. I barely clear my 33's with a 2 inch lift. And good luck with getting 14 mpg with a big block, I don't even expect that much with my 2001 5.3-liter swap
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12-04-2012, 04:29 PM
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#3 |
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Registered User
Join Date: Sep 2008
Location: Bailey, NC
Posts: 2,462
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Re: New Guy in Tucson
Welcome!
Posted via Mobile Device
__________________
Jeramy '84 GMC project truck '85 Chevy 4X4 SOLD '07 Chevy Trailblazer SS 5th Annual SHPHC Car/Truck Show Pics http://67-72chevytrucks.com/vboard/s...d.php?t=543605 UPDATED PICS! CHECK 'EM OUT |
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12-05-2012, 11:42 AM
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#4 |
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Registered User
Join Date: Dec 2012
Location: Tucson AZ
Posts: 6
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Re: New Guy in Tucson
Planning HEI, FI and an overdrive to get 14 MPG. I am thinking it will be enough. Any reccomendations on lift brand?
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12-05-2012, 11:50 AM
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#5 |
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Registered User
 
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: New Guy in Tucson
14mpg is obtainable from a 454. Ive done it with a 1984 crewcab 1t SRW truck. It was a 454/th400,14bolt 3.73 gears @ 60mph...carbed engine...no OD and NO EFI. Make sure you've got a GOOD tune,air pressure in tires are on the higher side of rating. (ie, if tire max press is 80psi, set it at 60 instead of 40= less rolling resistance) and ease into the gas leaving a stop....you dont have a race car.
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------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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12-05-2012, 06:42 PM
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#6 |
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Registered User
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,188
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Re: New Guy in Tucson
My best highway with a C20 454 SM45 granny 4 speed with GearVendor overdrive was 13 mpg. That is all stock with Qjet carb, 4:10 rear axle. City bwst was 11 mpg.
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12-05-2012, 06:57 PM
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#7 |
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Registered User
Join Date: Feb 2009
Location: Scottsdale, AZ
Posts: 390
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Re: New Guy in Tucson
33s on a 2wd? Not sure if that is possible...
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-Don- '66  C10 w/factory A/C'77 Cheyenne K5 350/465/205 '80 Custom Deluxe K20 350/465/205'04 Denali XL '05 DMax CCLB 4x Have a Hickey Sidewinder Winch and need the owners/install manual? Send me a PM with your email address and I'll forward you a .pdf 
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12-05-2012, 07:17 PM
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#8 |
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Registered User
Join Date: Oct 2011
Location: oakdale ca
Posts: 552
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Re: New Guy in Tucson
ive seen it done.. i had 3" coil spacers off ebay and i could have fit 33s on it. they were only $55 if thats not enough do a 3" body lift
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75 c30 silverado drw 454/th400hd d70 soon to have d60 up front 73 c20 custom deluxe sm465 14bff parts truck |
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12-05-2012, 11:12 PM
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#9 |
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Registered User
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: New Guy in Tucson
You can run 285x75x16 on a late model wheel and they will clear just fine.
__________________
------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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