Coil Spring bolt size Help? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jkaylor68gmc · 06-05-2008, 09:37 AM

After removing my dads springs last night ifound there to be no nuts welded to the inside of the cups on the bottom. I want to pick up some new bolts tonight. I figured grade 8 bolt with a washer running up through the bottom with a washer,lock washer and nut on top. SInce they run through the trailing arms doese anyone know how long they should be? I forgot to measure when I was there.

thanks

josh

Green Machine · 06-05-2008, 10:22 AM

Just bought some here. 1/2 inch by 5 inch grade 8 is what I use. Get the grade 8 washers too. We put the lock washer under the head on the bottom, if it matters any. So we go from bottom - bolt-lock-flat-arm-spring-cup-flat-nut.

Top takes a 2 inch long bolt, 2 1/2 fits too, just more threads hang out. Here starting from bottom we go - bolt-flat-cup-spring-frame-lock-nut.

jkaylor68gmc · 06-05-2008, 10:24 AM

You are the man, thanks a ton. That is exactly what I was looking for.

06-05-2008, 09:37 AM	#1
jkaylor68gmc Senior Member Join Date: Dec 2005 Location: TN Posts: 2,448	Coil Spring bolt size Help? After removing my dads springs last night ifound there to be no nuts welded to the inside of the cups on the bottom. I want to pick up some new bolts tonight. I figured grade 8 bolt with a washer running up through the bottom with a washer,lock washer and nut on top. SInce they run through the trailing arms doese anyone know how long they should be? I forgot to measure when I was there. thanks josh __________________ 1947 International KB-1 1957 Chevy Bel-Air riding low 1962 swb fleetside 2002 Chevrolet Silverado 7-inch lift on 35 Daily driver 2016 Chevy Tahoe Better halves ride

06-05-2008, 10:22 AM	#2
Green Machine Senior Member Join Date: Jul 2004 Location: Estherville, Iowa Posts: 3,371	Re: Coil Spring bolt size Help? Just bought some here. 1/2 inch by 5 inch grade 8 is what I use. Get the grade 8 washers too. We put the lock washer under the head on the bottom, if it matters any. So we go from bottom - bolt-lock-flat-arm-spring-cup-flat-nut. Top takes a 2 inch long bolt, 2 1/2 fits too, just more threads hang out. Here starting from bottom we go - bolt-flat-cup-spring-frame-lock-nut. __________________ 1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0

06-05-2008, 10:24 AM	#3
jkaylor68gmc Senior Member Join Date: Dec 2005 Location: TN Posts: 2,448	Re: Coil Spring bolt size Help? You are the man, thanks a ton. That is exactly what I was looking for. __________________ 1947 International KB-1 1957 Chevy Bel-Air riding low 1962 swb fleetside 2002 Chevrolet Silverado 7-inch lift on 35 Daily driver 2016 Chevy Tahoe Better halves ride



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