67 Engine Tower(mount) differences - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dan 67 Chevy LWB · 05-17-2009, 02:11 PM

I have 67 Chevy that originally had a I-6 with standard trans. About 15 years ago pulled the I-6 & trans in favor of a small block and TH400 trans. I don't remember exactly what i did, but looks like i just opened up the holes on the engine tower to bolt the small block in. I also just modified (welded mount) to stock trans crossmember.

I'm now planning on going to a big block and either staying with the TH400 or putting in a Overdrive trans(i have one i think is 700r4, but have to verify it).l

So what i'm looking for is the difference between the different Engine tower(motor mounts) and trans crossmembers. Is that a site that show and explains the differences. Or a supplier that shows the different mounts. Also do you know who sells the big block towers?

Thanks

weircc · 05-17-2009, 03:16 PM

big block stands will have a slight curve in them for header clearance. hope this helps

Dan 67 Chevy LWB · 05-20-2009, 01:33 PM

Anyone have an side by side photo's of the different engine towers? or just some photos of towers that you know what they are?

I plan on going to a salvage yard this weekend that i know has some 67-72 trucks. I was hoping that i might be able to find some big block mounts, but don't want to get the wrong ones? Also i've been informed that the 72 big block towers are different than the 68-71 towers? Is this true and again how do i tell the difference? or how do i identify a 72 from a 68-71 truck?

Thanks

**john** · 05-20-2009, 04:14 PM

Theres a pic of the 68-71 BB towers in this thread, and how to use with the cheaper SB mounts. The 72 mounts are clamshell type like 73 and up. There is a FAQ on using the 73 and up clamshells but the pics are missing. You have to redrill some holes.
http://67-72chevytrucks.com/vboard/s...d.php?t=122645

**CPNE** · 05-20-2009, 04:35 PM

67 frame is different up front. The upper frame rail is wider than that on 68-72 frames where the engine stands bolt. You'll have to trime the frame back approximately 1/4 inch or more to get any style 68-72 BB mounts to work.

Not a big deal but you need to be aware of this. Wish I had pics for you

05-17-2009, 02:11 PM	#1
Dan 67 Chevy LWB Registered User Join Date: Nov 2008 Location: Midlothian, TX Posts: 69	67 Engine Tower(mount) differences I have 67 Chevy that originally had a I-6 with standard trans. About 15 years ago pulled the I-6 & trans in favor of a small block and TH400 trans. I don't remember exactly what i did, but looks like i just opened up the holes on the engine tower to bolt the small block in. I also just modified (welded mount) to stock trans crossmember. I'm now planning on going to a big block and either staying with the TH400 or putting in a Overdrive trans(i have one i think is 700r4, but have to verify it).l So what i'm looking for is the difference between the different Engine tower(motor mounts) and trans crossmembers. Is that a site that show and explains the differences. Or a supplier that shows the different mounts. Also do you know who sells the big block towers? Thanks __________________ Dan 67 Chevy LWB, Small Window - In the process of being rebuilt. Small Block is coming out & I'm gathering parts to switch to a Big Block 496.

05-17-2009, 03:16 PM	#2
weircc Registered User Join Date: Dec 2008 Location: richmond, MO Posts: 794	Re: 67 Engine Tower(mount) differences big block stands will have a slight curve in them for header clearance. hope this helps

05-20-2009, 01:33 PM	#3
Dan 67 Chevy LWB Registered User Join Date: Nov 2008 Location: Midlothian, TX Posts: 69	Re: 67 Engine Tower(mount) differences Anyone have an side by side photo's of the different engine towers? or just some photos of towers that you know what they are? I plan on going to a salvage yard this weekend that i know has some 67-72 trucks. I was hoping that i might be able to find some big block mounts, but don't want to get the wrong ones? Also i've been informed that the 72 big block towers are different than the 68-71 towers? Is this true and again how do i tell the difference? or how do i identify a 72 from a 68-71 truck? Thanks __________________ Dan 67 Chevy LWB, Small Window - In the process of being rebuilt. Small Block is coming out & I'm gathering parts to switch to a Big Block 496. Last edited by Dan 67 Chevy LWB; 05-20-2009 at 01:34 PM.

05-20-2009, 04:14 PM	#4
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: 67 Engine Tower(mount) differences Theres a pic of the 68-71 BB towers in this thread, and how to use with the cheaper SB mounts. The 72 mounts are clamshell type like 73 and up. There is a FAQ on using the 73 and up clamshells but the pics are missing. You have to redrill some holes. http://67-72chevytrucks.com/vboard/s...d.php?t=122645 __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/ Last edited by john; 05-20-2009 at 04:14 PM.

05-20-2009, 04:35 PM	#5
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,662	Re: 67 Engine Tower(mount) differences 67 frame is different up front. The upper frame rail is wider than that on 68-72 frames where the engine stands bolt. You'll have to trime the frame back approximately 1/4 inch or more to get any style 68-72 BB mounts to work. Not a big deal but you need to be aware of this. Wish I had pics for you __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all



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