Ls swap guys help! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sherm6413 · 09-07-2015, 10:26 PM

Ok so I'm in the process of putting in a 5.3 and 4l60e with the entire cpp swap kit. Well motor and tranny are in and I am trying to bolt tranny crossmember to tranny. When I measure across frame rails the transmission is 1/2" off to the passenger side. Is this normal or don't I need it dead center? I've tried moving over and it's not budging , please any advice is thankful

**special-K** · 09-08-2015, 07:31 AM

Here's a whole forum for LS swap questions:

http://67-72chevytrucks.com/vboard/f...play.php?f=206

67 chevelle · 09-08-2015, 08:40 AM

doubt it will make a diferance , dodges are an inch over , and fords are 3-4 inches

Aruba1 · 09-08-2015, 11:42 AM

Quote:

Originally Posted by sherm6413

Well motor and tranny are in and I am trying to bolt tranny crossmember to tranny. When I measure across frame rails the transmission is 1/2" off to the passenger side.

Are both motor mounts bolted onto the motor? BTDT, my transmission mount was also offset when I had only one side of the motor mount bolted in place. When I got the other side bolted the transmission lined up right in the center.

bs46488 · 09-08-2015, 01:08 PM

I put a LS in a Nova.

My trans was off to the drivers side, but by the time I got things buttoned up and bolted down, it was maybe 1/8" off. I was able to push the trans into place and put the bolts in.

Between the bolt holes on on the trans and the holes on the mount, there is a lot of wiggle room.

sherm6413 · 09-09-2015, 02:53 PM

yes both mounts are bolted to motor and evenly slid back as far as possible, I can get it close to center but then one motor mount is 3/8 further back than the other. I just don't want my driveshaft off balance

BR3W CITY · 09-09-2015, 08:59 PM

My motors has a little "hip lean" to the left if you stare at it from dead level. Most do.

FWIW, our entire frames are up to 1/2" off square sometimes more....old tolerances + lord knows how many fender benders and fixes. Some guys frames are WAY off.

There is a cross brace in the rear under the bed on the 64-66's that is 1/2" off on EVERY one I've ever seen.

09-07-2015, 10:26 PM	#1
sherm6413 Registered User Join Date: Mar 2015 Location: Hannibal mo Posts: 281	Ls swap guys help! Ok so I'm in the process of putting in a 5.3 and 4l60e with the entire cpp swap kit. Well motor and tranny are in and I am trying to bolt tranny crossmember to tranny. When I measure across frame rails the transmission is 1/2" off to the passenger side. Is this normal or don't I need it dead center? I've tried moving over and it's not budging , please any advice is thankful

09-08-2015, 07:31 AM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Ls swap guys help! Here's a whole forum for LS swap questions: http://67-72chevytrucks.com/vboard/f...play.php?f=206 __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

09-08-2015, 08:40 AM	#3
67 chevelle Registered User Join Date: May 2013 Location: WEST PALM FLORIDA Posts: 1,174	Re: Ls swap guys help! doubt it will make a diferance , dodges are an inch over , and fords are 3-4 inches __________________ 68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive

09-08-2015, 01:08 PM	#5
bs46488 Registered User Join Date: May 2014 Location: San Diego, CA Posts: 547	Re: Ls swap guys help! I put a LS in a Nova. My trans was off to the drivers side, but by the time I got things buttoned up and bolted down, it was maybe 1/8" off. I was able to push the trans into place and put the bolts in. Between the bolt holes on on the trans and the holes on the mount, there is a lot of wiggle room.

09-09-2015, 02:53 PM	#6
sherm6413 Registered User Join Date: Mar 2015 Location: Hannibal mo Posts: 281	Re: Ls swap guys help! yes both mounts are bolted to motor and evenly slid back as far as possible, I can get it close to center but then one motor mount is 3/8 further back than the other. I just don't want my driveshaft off balance

09-09-2015, 08:59 PM	#7
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Ls swap guys help! My motors has a little "hip lean" to the left if you stare at it from dead level. Most do. FWIW, our entire frames are up to 1/2" off square sometimes more....old tolerances + lord knows how many fender benders and fixes. Some guys frames are WAY off. There is a cross brace in the rear under the bed on the 64-66's that is 1/2" off on EVERY one I've ever seen. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD



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