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12-22-2021, 09:01 PM
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#1 |
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Blue 67
 Join Date: Apr 2004
Location: Western WA
Posts: 1,175
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How much is the space between ....
Hi:
I am in the process of installing an under the bed gas tank in to my 53 GMC 3/4 project. My bed is in pieces right now. Can you tell me how much is the space from the top of the frame rail to under the bed? Is it just the height of under the bed crossmembers which seat on the frame rails? I want to know how far up I can push the tank. Thanks
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1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
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12-22-2021, 09:41 PM
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#2 |
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Registered User
Join Date: Aug 2016
Location: Hunkered Down
Posts: 1,801
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Re: How much is the space between ....
How will you fill it?
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12-22-2021, 10:41 PM
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#3 |
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Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,175
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Re: How much is the space between ....
I plan to go side fill. I bought the tanksinc universal one which has the option of side fill and top fill.
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
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12-22-2021, 11:00 PM
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#4 |
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Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,398
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Re: How much is the space between ....
if you have the spacer blocks, set the blocks on the frame rail in the right spots and lay the front and rear cross sills on the and lay a straight board or length of metal on them front to rear near the middle and then figure out how far down the end of the bolts that hold the metal strips and bedwood in are going to stick down below the bed and give yourself enough clearance there. you also have to clear that next to the rear bed sill.
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Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. |
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12-22-2021, 11:50 PM
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#5 |
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Registered User
Join Date: Aug 2016
Location: Hunkered Down
Posts: 1,801
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Re: How much is the space between ....
Fitting the tank can be a really critical first step. I had a different frame but squeezing in a blazer tank required at least 2" above the rails and removing some material from the bed sides under the fender. It was such a critical deal I used solid delrin blocks to adjust bed height up and leave room for side filler and breather hose. That really set the height for rest of truck including cab and front end.
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