Hood alignment - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**jollymon02** · Yesterday, 09:17 AM

Done some searching and can't find anything definitive to this problem, so reaching out on our 1972 GMC hood gap.

I think I have validated we have the right year fenders, cowl, and hood (OEM) upper grille, and hood (aftermarket), but I still have this gap. No excessive panel gaps from fender to doors. What advice or measurements do you have to assist with minimizing this gap?

**1970cstblazer** · Yesterday, 10:21 AM

You can move it back slightly by loosing the upper hinge bolts. As for the height, the rear rubber seal if hard wont allow the hood to sit flush. Only seal worth a hoot is an NOS GM seal, as they have the correct rubber density, and proper shape.

**jollymon02** · Yesterday, 10:48 AM

If I move it back, then I have a gap up front, which is the premise of the post. There is too much space. Anyone got a link to the OEM hood rubber?

**1970cstblazer** · Yesterday, 11:06 AM

Can't really tell, but the front edge of the hood, how does it line up with the front edge of the fender?

**1970cstblazer** · Yesterday, 11:08 AM

GM 6270848

https://www.ebay.com/itm/36536788889...Bk9SR7SumdeVZQ

**A1971Blazer** · Yesterday, 12:33 PM

You may have to fudge the cowl forward slightly and the hood back slightly and kinda split the difference. I think the factory tolerance was 3/16" ±.030 so they didn't really fit perfectly from the factory. I had to fudge my hood back about 1/32 but it's not that noticeable.

**pjmoreland** · Yesterday, 03:17 PM

If you can adjust the doors back, then you can move the entire front clip back, too, which will decrease that hood/cowl gap.

**jollymon02** · Yesterday, 09:21 PM

Thanks for all the suggestions. I will check all of these.

**Richard** · Today, 09:38 PM

Looks a little high in the back as well. Loosen the three bolts on each side holding hinges to fenders. Push up on front edge of hood, use a prop rod or have someone hold it while tightening hinge bolts. Should lower back of hood and suck it a bit tighter to cowl.

Yesterday, 09:17 AM	#1
jollymon02 Junior Member Join Date: Jun 2021 Location: Fort Worth, TX Posts: 57	Hood alignment Done some searching and can't find anything definitive to this problem, so reaching out on our 1972 GMC hood gap. I think I have validated we have the right year fenders, cowl, and hood (OEM) upper grille, and hood (aftermarket), but I still have this gap. No excessive panel gaps from fender to doors. What advice or measurements do you have to assist with minimizing this gap? Attached Images

Yesterday, 10:21 AM	#2
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,949	Re: Hood alignment You can move it back slightly by loosing the upper hinge bolts. As for the height, the rear rubber seal if hard wont allow the hood to sit flush. Only seal worth a hoot is an NOS GM seal, as they have the correct rubber density, and proper shape. __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

Yesterday, 10:48 AM	#3
jollymon02 Junior Member Join Date: Jun 2021 Location: Fort Worth, TX Posts: 57	Re: Hood alignment If I move it back, then I have a gap up front, which is the premise of the post. There is too much space. Anyone got a link to the OEM hood rubber?

Yesterday, 11:06 AM	#4
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,949	Re: Hood alignment Can't really tell, but the front edge of the hood, how does it line up with the front edge of the fender? __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

Yesterday, 11:08 AM	#5
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,949	Re: Hood alignment GM 6270848 https://www.ebay.com/itm/36536788889...Bk9SR7SumdeVZQ __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

Yesterday, 12:33 PM	#6
A1971Blazer Senior Member Join Date: Nov 2013 Location: East Tennessee Posts: 2,208	Re: Hood alignment You may have to fudge the cowl forward slightly and the hood back slightly and kinda split the difference. I think the factory tolerance was 3/16" ±.030 so they didn't really fit perfectly from the factory. I had to fudge my hood back about 1/32 but it's not that noticeable. __________________ 1967 C10 Step side 1968 C10 Step side 1970 Chevrolet K/5 Blazer 1972 Chevrolet K/5 Blazer .............

Yesterday, 03:17 PM	#7
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 6,075	Re: Hood alignment If you can adjust the doors back, then you can move the entire front clip back, too, which will decrease that hood/cowl gap.

Yesterday, 09:21 PM	#8
jollymon02 Junior Member Join Date: Jun 2021 Location: Fort Worth, TX Posts: 57	Re: Hood alignment Thanks for all the suggestions. I will check all of these.

Today, 09:38 PM	#9
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,919	Re: Hood alignment Looks a little high in the back as well. Loosen the three bolts on each side holding hinges to fenders. Push up on front edge of hood, use a prop rod or have someone hold it while tightening hinge bolts. Should lower back of hood and suck it a bit tighter to cowl. __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746



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