Bolts/Nuts for motor stand & mounts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

COACHMEASON · 03-12-2009, 07:40 PM

Can someone help me out...I need the correct bolts for the motor stand and mount for my SBC...What is the correct size bolt? Please excuse my ignorance

Thanks
Clint

STOCKISH · 03-12-2009, 07:58 PM

Mine were 3/8 by 16. ~1 1/4 inch long.

truckintexas · 03-12-2009, 11:42 PM

You may already know this, but use only "Grade 8" bolts washers and nuts. They're made from hardened steel and can withstand a lot of force before they shear.

Tx Firefighter · 03-13-2009, 06:19 AM

You can get the grade 8 bolts, nuts, and washers from your local Tractor Supply very cheap. They sell all grade 8 hardware by the pound in bulk.

cdowns · 03-13-2009, 08:59 AM

grade 8 not really needed dont believe they came from factory// never had any problems with hardware store stainless

*b-rad* · 03-13-2009, 11:16 AM

go grade 8 that is a lot of weight hanging out there on 4 bolts

cdowns · 03-13-2009, 01:17 PM

just about zero wheight load on the motor stand bolts the whole load is gravity holding it down those bolts merely hold it in place and any torsional forces from the engine are disapeted thru the rubber in the motor mounts

Robert8096 · 03-13-2009, 02:33 PM

If you are mounting the engine on a engine stand go with the grade 8 hardware. If you are talking about it sitting in the truck then stainless is the way to go.

Longhorn Man · 03-13-2009, 03:55 PM

grade 8 is overkill
there's hardly any aplication on your truck that needs 8, grade 5 will do fine.
otherwise, sneakysnake is right, you have to measure the tube he circled on his photo.

mbgmike · 03-13-2009, 05:51 PM

The oem's used grade 5 because thats the grade that it needed and it saved them money. For the cost differance (pennies) I would just buy grade 8

03-12-2009, 07:40 PM	#1
COACHMEASON Keep On Keepin' On Join Date: Apr 2006 Location: Oklahoma Posts: 416	Bolts/Nuts for motor stand & mounts Can someone help me out...I need the correct bolts for the motor stand and mount for my SBC...What is the correct size bolt? Please excuse my ignorance Thanks Clint __________________ 07 Avalanche Z71 92 Mustang 5.0 GT (Triple White w/ 53,000 miles) 72 SWB Chevy w/ PS, AC, 350/350 Current Project ....In paint shop getting body/paint work done (Corvette Velocity Yellow)... http://67-72chevytrucks.com/vboard/s...d.php?t=157669

03-12-2009, 07:58 PM	#2
STOCKISH Formerly- 1972SuperCheyenne Join Date: Oct 2008 Location: Wake Forest NC Posts: 5,782	Re: Bolts/Nuts for motor stand & mounts Mine were 3/8 by 16. ~1 1/4 inch long. __________________ --Josh My Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=799218 A good crossthread is better than Loctite any day. Life is not about what you have, but who you have to share it with.

03-12-2009, 11:42 PM	#3
truckintexas Registered User Join Date: Jul 2004 Location: Weatherford, TX Posts: 225	Re: Bolts/Nuts for motor stand & mounts You may already know this, but use only "Grade 8" bolts washers and nuts. They're made from hardened steel and can withstand a lot of force before they shear.

03-13-2009, 06:19 AM	#4
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Bolts/Nuts for motor stand & mounts You can get the grade 8 bolts, nuts, and washers from your local Tractor Supply very cheap. They sell all grade 8 hardware by the pound in bulk. __________________ I'm on the Instagram- @Gearhead_Kevin

03-13-2009, 08:59 AM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Bolts/Nuts for motor stand & mounts grade 8 not really needed dont believe they came from factory// never had any problems with hardware store stainless __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

03-13-2009, 11:16 AM	#6
b-rad Account Suspended Join Date: Nov 2007 Location: FT STEWART GA Posts: 509	Re: Bolts/Nuts for motor stand & mounts go grade 8 that is a lot of weight hanging out there on 4 bolts

03-13-2009, 01:17 PM	#7
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Bolts/Nuts for motor stand & mounts just about zero wheight load on the motor stand bolts the whole load is gravity holding it down those bolts merely hold it in place and any torsional forces from the engine are disapeted thru the rubber in the motor mounts __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 03-13-2009 at 02:35 PM.

03-13-2009, 02:33 PM	#8
Robert8096 Registered User Join Date: Nov 2007 Location: Goose Creek SC Posts: 161	Re: Bolts/Nuts for motor stand & mounts If you are mounting the engine on a engine stand go with the grade 8 hardware. If you are talking about it sitting in the truck then stainless is the way to go.

03-13-2009, 03:55 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Bolts/Nuts for motor stand & mounts grade 8 is overkill there's hardly any aplication on your truck that needs 8, grade 5 will do fine. otherwise, sneakysnake is right, you have to measure the tube he circled on his photo.

03-13-2009, 05:51 PM	#10
mbgmike Registered User Join Date: Aug 2005 Location: Pasadena,Tx /Pto Pta DR Posts: 5,415	Re: Bolts/Nuts for motor stand & mounts The oem's used grade 5 because thats the grade that it needed and it saved them money. For the cost differance (pennies) I would just buy grade 8



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