big block mounts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CG · 04-20-2006, 01:06 AM

just curious why there are two styles. i thought the cab and frames were pretty much the same on these trucks. what is diff about the 72 ones? can you use 72's on 67-71 or vice versa?

JimKshortstep4x4 · 04-20-2006, 06:23 AM

The 72 BB motor mounts are like the later mounts, (clamshell style). The 72 frame parts can be used on the older frames and the older frame parts can be used on the 72 frames.

Jim

Luvlegs · 04-20-2006, 08:02 AM

If you do a search, there are a couple threads with a bunch of nice pictures showing the different kinds, from different angles - the thread that I'm in pretty much tells it all.... There's also a thread about using the parts back and forth. I'm not good at finding threads or attaching them, but I bet someone else here can do it pretty quick.... I will tell ya, that if you buy a nice set for a 72, they will set ya back close to 200.... at least they did me....

rauto13 · 04-20-2006, 01:13 PM

here are a couple of recent threads on the difference in engine stands

http://67-72chevytrucks.com/vboard/s...ht=block+stand

http://67-72chevytrucks.com/vboard/s...block+stand%2A

70rs/ss · 04-20-2006, 01:23 PM

I think he is asking WHY there are two different types (he know there are two, but WHY?) I'll try my best, the 67-71 is a two piece mount, that if it failed (and it did over time) could release the motor, ie lift and cause serious damage. Hence, the switch to a clamstyle mount that no mater what the motor mount did (failure, deterioration) the motor would not lift more than a half inch of so because the clam retains the mount bolt. Safer, simple as that.

CG · 04-20-2006, 08:41 PM

thanks for those answers guys and yes 70rs that was what i was wondering. i have a couple of sets of 72's (not for sale) so im good to go.

04-20-2006, 01:06 AM	#1
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 19,823	big block mounts just curious why there are two styles. i thought the cab and frames were pretty much the same on these trucks. what is diff about the 72 ones? can you use 72's on 67-71 or vice versa?

04-20-2006, 06:23 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: big block mounts The 72 BB motor mounts are like the later mounts, (clamshell style). The 72 frame parts can be used on the older frames and the older frame parts can be used on the 72 frames. Jim

04-20-2006, 08:02 AM	#3
Luvlegs Registered User Join Date: Sep 2005 Location: Smith Mountain Lake Virginia Posts: 1,537	Re: big block mounts If you do a search, there are a couple threads with a bunch of nice pictures showing the different kinds, from different angles - the thread that I'm in pretty much tells it all.... There's also a thread about using the parts back and forth. I'm not good at finding threads or attaching them, but I bet someone else here can do it pretty quick.... I will tell ya, that if you buy a nice set for a 72, they will set ya back close to 200.... at least they did me.... __________________ "A cat will almost always blink when hit between the eyes with a ball peen hammer" (you don't always have to state the obvious) Wear your PPE! You can eat with false teeth but you can't see with a false eye. 1959 Studebaker Silverhawk 350/400 1972 C10 L6 3OTT 2005 F350 - Built - whew!

04-20-2006, 01:13 PM	#4
rauto13 saving one more Join Date: Sep 2005 Location: Pryor Creek, Oklahoma Posts: 3,066	Re: big block mounts here are a couple of recent threads on the difference in engine stands http://67-72chevytrucks.com/vboard/s...ht=block+stand http://67-72chevytrucks.com/vboard/s...block+stand%2A __________________ 72 Chevy longbed - now for parts 69 Chevy short fleet - needing some love 70 RS Camaro - needing more love driver - 96 GMC X-cab

04-20-2006, 01:23 PM	#5
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,271	Re: big block mounts I think he is asking WHY there are two different types (he know there are two, but WHY?) I'll try my best, the 67-71 is a two piece mount, that if it failed (and it did over time) could release the motor, ie lift and cause serious damage. Hence, the switch to a clamstyle mount that no mater what the motor mount did (failure, deterioration) the motor would not lift more than a half inch of so because the clam retains the mount bolt. Safer, simple as that. Last edited by 70rs/ss; 04-20-2006 at 01:24 PM.

04-20-2006, 08:41 PM	#6
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 19,823	Re: big block mounts thanks for those answers guys and yes 70rs that was what i was wondering. i have a couple of sets of 72's (not for sale) so im good to go.



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