6 cyl vs. 8 cyl crossmember differences - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Steve Cole · 08-08-2017, 09:15 PM

This question came up in the LS swap section and I wanted to post it here for more visibility. Does anyone know the difference between the 6 cylinder and the 8 cylinder engine cross members ? Another member couldn't get his LS motor to fit and the maker of the engine mounts he was using said he may have a 6 cylinder crossmember instead of the 8 cylinder one. I'm wondering if I have the same thing. How can you tell the difference? Thanks!

PanelDeland · 08-08-2017, 10:57 PM

I'm not aware of a difference in crossmembers. There is a difference in the towers for the motor mounts.

**'68OrangeSunshine** · 08-09-2017, 12:38 AM

Four wheel drive trucks with an original 292 had a diagonal X-member [more forward on the Passenger side] to accomodate the asymetrical 292's motor mounts. These cross-members are hard to find now. L6 292 in K/ trucks only.
Two wheel drive [C/ trucks] only had different towers for the 292. Other L6s used the same mounts, either side.

Steve Cole · 08-09-2017, 10:38 AM

Thanks for the input guys. So if I understand this correctly, the only difference in a 2wd c10 between the V8 and the I6 is the motor mount perches, the actual cross members are identical. Thanks for setting me straight.

Warrens69GMC · 08-09-2017, 12:01 PM

Quote:

Originally Posted by Steve Cole

This question came up in the LS swap section and I wanted to post it here for more visibility. Does anyone know the difference between the 6 cylinder and the 8 cylinder engine cross members ? Another member couldn't get his LS motor to fit and the maker of the engine mounts he was using said he may have a 6 cylinder crossmember instead of the 8 cylinder one. I'm wondering if I have the same thing. How can you tell the difference? Thanks!

Depends also what C10 your friends have

here is a picture of my 1978

**lolife99** · 08-09-2017, 12:05 PM

here's the difference,...

08-08-2017, 09:15 PM	#1
Steve Cole Registered User Join Date: May 2012 Location: Faith,NC Posts: 1,623	6 cyl vs. 8 cyl crossmember differences This question came up in the LS swap section and I wanted to post it here for more visibility. Does anyone know the difference between the 6 cylinder and the 8 cylinder engine cross members ? Another member couldn't get his LS motor to fit and the maker of the engine mounts he was using said he may have a 6 cylinder crossmember instead of the 8 cylinder one. I'm wondering if I have the same thing. How can you tell the difference? Thanks!

08-08-2017, 10:57 PM	#2
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Re: 6 cyl vs. 8 cyl crossmember differences I'm not aware of a difference in crossmembers. There is a difference in the towers for the motor mounts. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

08-09-2017, 12:38 AM	#3
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,164	Re: 6 cyl vs. 8 cyl crossmember differences Four wheel drive trucks with an original 292 had a diagonal X-member [more forward on the Passenger side] to accomodate the asymetrical 292's motor mounts. These cross-members are hard to find now. L6 292 in K/ trucks only. Two wheel drive [C/ trucks] only had different towers for the 292. Other L6s used the same mounts, either side. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

08-09-2017, 10:38 AM	#4
Steve Cole Registered User Join Date: May 2012 Location: Faith,NC Posts: 1,623	Re: 6 cyl vs. 8 cyl crossmember differences Thanks for the input guys. So if I understand this correctly, the only difference in a 2wd c10 between the V8 and the I6 is the motor mount perches, the actual cross members are identical. Thanks for setting me straight.

08-09-2017, 12:05 PM	#6
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,690	Re: 6 cyl vs. 8 cyl crossmember differences here's the difference,... Attached Images __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823



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