Crossmember bolts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**70STOVEBOLT** · 06-22-2006, 08:31 AM

Are there special fasteners to attach an auto x-member to the frame or will grade 5 bolts with lockwashers and standard nuts suffice?

BrianJordan · 06-22-2006, 09:05 AM

only use grade 5 bolts if you want your tranny to fall out .

use grade 8 bolts, nuts and locks.

corn · 06-22-2006, 11:13 AM

Im sure its the safe bet to tell people to use grade 8 bolts on everything but all Ive ever used on a trans x/member is grade 5's. Never lost one yet...corn

glock35ipsc · 06-22-2006, 11:32 AM

Grade 5 will work just fine.

**70STOVEBOLT** · 06-22-2006, 12:00 PM

Thanks guys. I appreciate it.

Stovebolt

BrianJordan · 06-22-2006, 04:10 PM

Quote:

Originally Posted by cornfed63

Im sure its the safe bet to tell people to use grade 8 bolts on everything but all Ive ever used on a trans x/member is grade 5's. Never lost one yet...corn

i'm not trying to be an a#$,but why take the risk. how much does a tranny cost, incomparison to 4-8 geade 8 bolts?

Longhorn Man · 06-22-2006, 05:52 PM

In all reality, you don't even need grade 5. This isn't a structual piece, it's not load bearing, you are just keeping it from sliding around.
People go way overboard on grade 8 talk, and 99.9% of the ppl spewing that info don't know jack about gradr 5 , grade 8, or which to use in which aplication. There's plenty of times to use grade 5 where you'd be stupid to use grad 8 becouse a grade 8 could break. (yes, grade 5 is stronger in some ways)
I could go way into detail, but I won't, becouse all it does is make my fingers tired, then I'm flamed, called names, and then get BS in my PM box saying I'm a tool.

Oldtruckfanatic · 06-22-2006, 06:24 PM

^^^^ I started to type a similar response but I stopped and erased it.

crazy longhorn · 06-22-2006, 07:21 PM

http://www.rockcrawler.com/techrepor...ners/index.asp

Longhorn Man · 06-22-2006, 09:01 PM

That article has quite a few things that contradict what I learned in school, in the army (I was an M-1 hull mechanic) and the last 5 years in a heavy truck shop. I can't call BS on his figures, becouse I can't do that kind of math, but like I said, it contradicts most everything I have learned, and everywhere I learned these things had the same info.

krue · 06-22-2006, 11:18 PM

Heh, why don't you just use stainless.

I'm KIDDING.

Longhorn Man · 06-22-2006, 11:30 PM

Wow.... my in box is already taking a beating, and I will personally see to it that I respond to none of them.

krue · 06-23-2006, 02:25 AM

corn · 06-23-2006, 11:30 AM

Quote:

Originally Posted by Longhorn Man

Wow.... my in box is already taking a beating, and I will personally see to it that I respond to none of them.

Americanrider · 06-23-2006, 12:16 PM

Quote:

Originally Posted by crazy longhorn

http://www.rockcrawler.com/techrepor...ners/index.asp

Good info there, well worth the time to read & learn.

Andy the M-1 hull mech, MOS 63E....me too, been there, done that, hate "DATS" aka: Dumb A55 Tankers.

Longhorn Man · 06-23-2006, 06:56 PM

yep, i was a 63E with a H8 identifier for 7 1/2 years.
Been a PFC (Proud friggen civillian) for 5 years now, i don't know if all the armor has the computers now, but in my days at ft Hood we were testing the computers in the tanks, so we called our tankers CDATs... Computerized dumb ass tankers.

Americanrider · 06-23-2006, 09:31 PM

I did the M-88 Jockey thing for a while in Ft Polk, earned my Hotel-8 in the swamps busting knuckles on those old M-60 A3's. Went to West Germany in '87 and had to retrain for the A-1's. They are all just "STUMPS"...
Stupid Tankers Under Maintenance Protection.

DAT-DAT makes that sound... Crunch! Dat in my sprocket goes 'round and 'round

Longhorn Man · 06-23-2006, 10:30 PM

LOL!!!
I did my H8 training at knox in Kentucky. They still have the old m60 tanks there. The junk is so bad there, I was dragging an M60A3 (I think it was an A3) and the sucker broke the track... not the 88, the 60! I was LMAO untill I was told we had to fix it and since there were no tankers around.... yep, we got to do it.

Stumps... I forgot all about that one!

06-22-2006, 08:31 AM	#1
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,266	Crossmember bolts Are there special fasteners to attach an auto x-member to the frame or will grade 5 bolts with lockwashers and standard nuts suffice? __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

06-22-2006, 09:05 AM	#2
BrianJordan Iron Thunder Join Date: Nov 2003 Location: Phoenix Arizona Posts: 377	Re: Crossmember bolts only use grade 5 bolts if you want your tranny to fall out . use grade 8 bolts, nuts and locks.

06-22-2006, 11:13 AM	#3
corn Registered User Join Date: Dec 2003 Location: here Posts: 5,789	Re: Crossmember bolts Im sure its the safe bet to tell people to use grade 8 bolts on everything but all Ive ever used on a trans x/member is grade 5's. Never lost one yet...corn

06-22-2006, 11:32 AM	#4
glock35ipsc Next project: 1970 K10 Join Date: Feb 2004 Location: Fort Collins, Colo 80524 Posts: 6,685	Re: Crossmember bolts Grade 5 will work just fine. __________________ *Bob* 1970 Chevy K10 LWB "Goldie" 350/TH350 *next project!!* 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE

06-22-2006, 12:00 PM	#5
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,266	Re: Crossmember bolts Thanks guys. I appreciate it. Stovebolt __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

06-22-2006, 05:52 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Crossmember bolts In all reality, you don't even need grade 5. This isn't a structual piece, it's not load bearing, you are just keeping it from sliding around. People go way overboard on grade 8 talk, and 99.9% of the ppl spewing that info don't know jack about gradr 5 , grade 8, or which to use in which aplication. There's plenty of times to use grade 5 where you'd be stupid to use grad 8 becouse a grade 8 could break. (yes, grade 5 is stronger in some ways) I could go way into detail, but I won't, becouse all it does is make my fingers tired, then I'm flamed, called names, and then get BS in my PM box saying I'm a tool.

06-22-2006, 06:24 PM	#8
Oldtruckfanatic Truck junkie Join Date: May 2006 Location: Reno NV Posts: 697	Re: Crossmember bolts ^^^^ I started to type a similar response but I stopped and erased it.

06-22-2006, 07:21 PM	#9
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	Re: Crossmember bolts http://www.rockcrawler.com/techrepor...ners/index.asp __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

06-22-2006, 09:01 PM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Crossmember bolts That article has quite a few things that contradict what I learned in school, in the army (I was an M-1 hull mechanic) and the last 5 years in a heavy truck shop. I can't call BS on his figures, becouse I can't do that kind of math, but like I said, it contradicts most everything I have learned, and everywhere I learned these things had the same info.

06-22-2006, 11:18 PM	#11
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Re: Crossmember bolts Heh, why don't you just use stainless. I'm KIDDING. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

06-22-2006, 11:30 PM	#12
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Crossmember bolts Wow.... my in box is already taking a beating, and I will personally see to it that I respond to none of them.

06-23-2006, 02:25 AM	#13
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Re: Crossmember bolts __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

06-23-2006, 06:56 PM	#16
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Crossmember bolts yep, i was a 63E with a H8 identifier for 7 1/2 years. Been a PFC (Proud friggen civillian) for 5 years now, i don't know if all the armor has the computers now, but in my days at ft Hood we were testing the computers in the tanks, so we called our tankers CDATs... Computerized dumb ass tankers.

06-23-2006, 09:31 PM	#17
Americanrider Registered User Join Date: Dec 2004 Location: NW, WA. Posts: 1,421	Re: Crossmember bolts I did the M-88 Jockey thing for a while in Ft Polk, earned my Hotel-8 in the swamps busting knuckles on those old M-60 A3's. Went to West Germany in '87 and had to retrain for the A-1's. They are all just "STUMPS"... Stupid Tankers Under Maintenance Protection. DAT-DAT makes that sound... Crunch! Dat in my sprocket goes 'round and 'round

06-23-2006, 10:30 PM	#18
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Crossmember bolts LOL!!! I did my H8 training at knox in Kentucky. They still have the old m60 tanks there. The junk is so bad there, I was dragging an M60A3 (I think it was an A3) and the sucker broke the track... not the 88, the 60! I was LMAO untill I was told we had to fix it and since there were no tankers around.... yep, we got to do it. Stumps... I forgot all about that one!



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