Powersteering Bolts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

alf1096 · 09-05-2005, 09:10 PM

I have all of the pumps and braquets to put the powersteering pump on I just need to know what size bolts to put it on with. The engine is a 350 chevy 70 c-10

thanks

alf1096 · 09-05-2005, 10:44 PM

Please Help I have no idea what length what type of thread or even what size bolt. You can find any other set of bolts out of a cataloge but I can't find the ps bolts

thanks

Green Machine · 09-05-2005, 11:57 PM

I'll bite - most bolts on the engine are coarse thread 3/8. Always use grade 5 or better bolts. Stick something in a bolt hole, measure the depth, and add the thickness of the bracket to get the bolt length. Get that length or slightly shorter. Common hardware store stuff, available anywhere.

**VetteVet** · 09-06-2005, 12:37 AM

I'll add my .02 to that GM is right most engine bolts are coarse thread and either 7/16 , 3/8ths or 5/16ths. Power steering pumps mount to the front of the engine either to the block or the heads and use 3/8ths x 16 coarse thread bolts. Some brackets bolt to the block and use bigger sizes and the pump then bolts to the bracket.
A way I use to find the thread size is to try a tap in the hole and when I find the one that fits I read the size printed on the tap. As far as length goes then just measure the thickness of the bracket and add enough threads to get three showing through the bracket. That's an old air force standard.

tomatocity · 09-06-2005, 12:41 AM

I would help you but the bolts on my truck don't look original and some are double washered. I agree with measuring. I would rather be a 1/4" too short than 1/16" too long. Luckily I have a place name Blue Collar that sells most grades of bolts by the pound and I need to stock up this next Saturday. If you are too far away to get bolts I will send you a set.

2500HD · 09-06-2005, 09:43 PM

I am buying a power steering set up from another board member and if he does not have the hardware I am going to have the same problem. Someone has got to know.

alf1096 · 09-06-2005, 10:31 PM

When you get the pump in if it has the bolts be sure and post what size please

**pjmoreland** · 09-07-2005, 09:51 PM

I think the bolts are about 1-1/2 inches long.

09-05-2005, 09:10 PM	#1
alf1096 Registered User Join Date: Aug 2005 Location: Texas Posts: 124	Powersteering Bolts I have all of the pumps and braquets to put the powersteering pump on I just need to know what size bolts to put it on with. The engine is a 350 chevy 70 c-10 thanks Last edited by alf1096; 09-05-2005 at 09:33 PM.

09-05-2005, 10:44 PM	#2
alf1096 Registered User Join Date: Aug 2005 Location: Texas Posts: 124	Please Help I have no idea what length what type of thread or even what size bolt. You can find any other set of bolts out of a cataloge but I can't find the ps bolts thanks Last edited by alf1096; 09-05-2005 at 10:44 PM.

09-05-2005, 11:57 PM	#3
Green Machine Senior Member Join Date: Jul 2004 Location: Estherville, Iowa Posts: 3,371	I'll bite - most bolts on the engine are coarse thread 3/8. Always use grade 5 or better bolts. Stick something in a bolt hole, measure the depth, and add the thickness of the bracket to get the bolt length. Get that length or slightly shorter. Common hardware store stuff, available anywhere. __________________ 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 Last edited by Green Machine; 09-06-2005 at 12:03 AM.

09-06-2005, 12:37 AM	#4
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,715	I'll add my .02 to that GM is right most engine bolts are coarse thread and either 7/16 , 3/8ths or 5/16ths. Power steering pumps mount to the front of the engine either to the block or the heads and use 3/8ths x 16 coarse thread bolts. Some brackets bolt to the block and use bigger sizes and the pump then bolts to the bracket. A way I use to find the thread size is to try a tap in the hole and when I find the one that fits I read the size printed on the tap. As far as length goes then just measure the thickness of the bracket and add enough threads to get three showing through the bracket. That's an old air force standard. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

09-06-2005, 12:41 AM	#5
tomatocity Registered User Join Date: Jun 2005 Location: Sacramento CA Posts: 1,255	I would help you but the bolts on my truck don't look original and some are double washered. I agree with measuring. I would rather be a 1/4" too short than 1/16" too long. Luckily I have a place name Blue Collar that sells most grades of bolts by the pound and I need to stock up this next Saturday. If you are too far away to get bolts I will send you a set. __________________ Got bored, sold everthing. Got bored, looking for a 1960-66 C-10. Want to build my last truck.

09-06-2005, 09:43 PM	#6
2500HD Registered User Join Date: Aug 2005 Location: DFW Posts: 268	I am buying a power steering set up from another board member and if he does not have the hardware I am going to have the same problem. Someone has got to know.

09-06-2005, 10:31 PM	#7
alf1096 Registered User Join Date: Aug 2005 Location: Texas Posts: 124	When you get the pump in if it has the bolts be sure and post what size please

09-07-2005, 09:51 PM	#8
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,648	I think the bolts are about 1-1/2 inches long.



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