Hood hinges - how to tell if they are GM or repop - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1968SWBBigBlock · 02-07-2009, 01:55 PM

I picked up a set of hood hinges today - I was told they are NOS - the have the part number painted onto the side - 3911705LH 3911706RH
The have a hang tag on the but the label is so faded you can not read it - it did strike me as a part tag for GM
Any way I can tell for sure which these are?

**LockDoc** · 02-07-2009, 09:53 PM

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I don't know how to tell. If a person had an original pair you should be able to compare them... I've never seen a pair of aftermarket ones.

LockDoc

WillW23 · 02-07-2009, 10:21 PM

Well I have rebuilt many sets or original Truck hood hinges over the last 5 years, and I have seen 2 different kinds of rivet facings. Most have the X or the plus sign, pressed into the top of the rivet, and flared, and the other has the X pressed on the outside edges of the rivet, and flared. I have never seen any with the cast numbers on the hinges, like Chevelle SS hinges were done. As long as they are tight and straight, I would use them, since so many core hinges i get are worn slam out.

02-07-2009, 01:55 PM	#1
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Hood hinges - how to tell if they are GM or repop I picked up a set of hood hinges today - I was told they are NOS - the have the part number painted onto the side - 3911705LH 3911706RH The have a hang tag on the but the label is so faded you can not read it - it did strike me as a part tag for GM Any way I can tell for sure which these are? __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree

02-07-2009, 09:53 PM	#2
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,771	Re: Hood hinges - how to tell if they are GM or repop - I don't know how to tell. If a person had an original pair you should be able to compare them... I've never seen a pair of aftermarket ones. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

02-07-2009, 10:21 PM	#3
WillW23 Registered User Join Date: Dec 2007 Location: Forest, VA Posts: 16	Re: Hood hinges - how to tell if they are GM or repop Well I have rebuilt many sets or original Truck hood hinges over the last 5 years, and I have seen 2 different kinds of rivet facings. Most have the X or the plus sign, pressed into the top of the rivet, and flared, and the other has the X pressed on the outside edges of the rivet, and flared. I have never seen any with the cast numbers on the hinges, like Chevelle SS hinges were done. As long as they are tight and straight, I would use them, since so many core hinges i get are worn slam out.

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