5.3with small block engine supports - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mlevario99 · 07-27-2013, 02:15 PM

Hi, I am trying to use the engine supports that came with with 68 suburban when I bought it. It had a V8 on it, I am swaping it with a 5.3 Vortec, but it apparars that they do not line up with the holes on the, I can line up the one on the passenger side, but the one in the driver side does not line up, you cna see on the pictures below. Has anyone use them before, and if you had, did you had any issues with them. I might have to buy the motor mounts from CPP, I used them before in a 66 truck.

Thanks

**truckdude239** · 07-27-2013, 03:46 PM

I used the dirty dingo slider mounts and the small block mounts bolt to them
Posted via Mobile Device

BR3W CITY · 07-27-2013, 03:56 PM

I made sure the engine was more or less square, then drilled new holes for the bolts on the perch, then bolted the mount to that.

I went as far as welding the tabs of the engine stands in place; it makes the engine a big tricky to get out because of the angle the botls need to go, but strength isn't a concern.

BigRed76 · 07-28-2013, 12:29 PM

I like these, may or may not fit your budget...

http://www.summitracing.com/parts/hok-12611hkr

mlevario99 · 07-28-2013, 01:38 PM

Thanks guys, what I was trying to do was to use the existing engine supports but I can not get them to line up with the hole in the motor mount, if I bolt one side, the other motor mount is a littlt bit higher.

Thanks

kevmac · 07-28-2013, 03:52 PM

which adapt plates are you using? I've seen holes enlarged and shims added to raise one side then the other. justa thought
Posted via Mobile Device

kevmac · 07-28-2013, 03:53 PM

the small block stands on the frame that is
Posted via Mobile Device

**truckdude239** · 07-28-2013, 04:40 PM

the problem is the ls engine mount bolts holes are not the same as the stardard small block bolt pattern without a set of conversion mounts they will never fit

crazy longhorn · 08-01-2013, 01:28 AM

Looking at the pics, you have the conversion brackets on the block....which set(brand) did you use? I have seen this problem, with stock replacement mounts....even with the genI engine! This is due to the fact that the replacement mounts are floated in on a boat, & are not consistant. What I do on any swap, is to drill the mounting hole in the stand (1 ea side ,to 5/8"), to make up for misalignment on the threaded holes in the rubber mount. Another trick that works, is to loosen the stands from the frame....you will find that there is a little room to move the stands around a tad

Just get the stands to "snug up" to the mount, then set the eng, stands & all down to the frame....center, & 'bubble" level & bolt it down. Hope that helps....Longhorn

mlevario99 · 08-01-2013, 08:09 AM

Thanks for all your help, I will try to do that crazy longhorn. I have the TransAdapt plates, I use the towers from CPP on my last swap, this time I was just trying to see if the original towers will work.

Thanks

**truckdude239** · 08-01-2013, 09:27 AM

i used the dirty dingo silder adapters with the stock mounts fit perfect

crazy longhorn · 08-01-2013, 11:36 PM

Let us know how she goes/ I have the Carshop inc plates for my swap, & they look to be close to what you have. The heads are in the shop, for my 5.3.... so I cant tell yet how it comes out? The thing I see (pics are deceiving), is that you don't have a for/aft issue, but more of a "pinch" issue? As said, I have seen a STOCK engine, in STOCK spot, be an issue , just swapping the mounts! Post any knowledge that you have on the fit....you might help this old man a tad

Best of fun,longhorn

07-27-2013, 02:15 PM	#1
mlevario99 Registered User Join Date: Apr 2010 Location: El Paso, TX Posts: 160	5.3with small block engine supports Hi, I am trying to use the engine supports that came with with 68 suburban when I bought it. It had a V8 on it, I am swaping it with a 5.3 Vortec, but it apparars that they do not line up with the holes on the, I can line up the one on the passenger side, but the one in the driver side does not line up, you cna see on the pictures below. Has anyone use them before, and if you had, did you had any issues with them. I might have to buy the motor mounts from CPP, I used them before in a 66 truck. Thanks

07-27-2013, 03:46 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: 5.3with small block engine supports I used the dirty dingo slider mounts and the small block mounts bolt to them Posted via Mobile Device __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

07-27-2013, 03:56 PM	#3
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: 5.3with small block engine supports I made sure the engine was more or less square, then drilled new holes for the bolts on the perch, then bolted the mount to that. I went as far as welding the tabs of the engine stands in place; it makes the engine a big tricky to get out because of the angle the botls need to go, but strength isn't a concern. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

07-28-2013, 12:29 PM	#4
BigRed76 Registered User Join Date: Jan 2010 Location: Loveland, CO Posts: 1,921	Re: 5.3with small block engine supports I like these, may or may not fit your budget... http://www.summitracing.com/parts/hok-12611hkr __________________ Zach 1970 Chevrolet Custom Camper K20 1971 GMC Super K2500, 12V/NV4500 swap in progress 1971 Chevrolet Custom C10 1972 Chevrolet Custom Deluxe C20, 5.3/4L60E 1972 Oldsmobile Cutlass Supreme, 455/TH400, 3.73 posi 2004 GMC Sierra 2500HD, LB7/Allison, CCSB 2005 GMC Sierra 1500, 5.3/4L60E, CCSB

07-28-2013, 01:38 PM	#5
mlevario99 Registered User Join Date: Apr 2010 Location: El Paso, TX Posts: 160	Re: 5.3with small block engine supports Thanks guys, what I was trying to do was to use the existing engine supports but I can not get them to line up with the hole in the motor mount, if I bolt one side, the other motor mount is a littlt bit higher. Thanks

07-28-2013, 03:52 PM	#6
kevmac Registered User Join Date: Jun 2012 Location: ft worth tx Posts: 135	Re: 5.3with small block engine supports which adapt plates are you using? I've seen holes enlarged and shims added to raise one side then the other. justa thought Posted via Mobile Device

07-28-2013, 03:53 PM	#7
kevmac Registered User Join Date: Jun 2012 Location: ft worth tx Posts: 135	Re: 5.3with small block engine supports the small block stands on the frame that is Posted via Mobile Device

07-28-2013, 04:40 PM	#8
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: 5.3with small block engine supports the problem is the ls engine mount bolts holes are not the same as the stardard small block bolt pattern without a set of conversion mounts they will never fit __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

08-01-2013, 01:28 AM	#9
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	Re: 5.3with small block engine supports Looking at the pics, you have the conversion brackets on the block....which set(brand) did you use? I have seen this problem, with stock replacement mounts....even with the genI engine! This is due to the fact that the replacement mounts are floated in on a boat, & are not consistant. What I do on any swap, is to drill the mounting hole in the stand (1 ea side ,to 5/8"), to make up for misalignment on the threaded holes in the rubber mount. Another trick that works, is to loosen the stands from the frame....you will find that there is a little room to move the stands around a tad Just get the stands to "snug up" to the mount, then set the eng, stands & all down to the frame....center, & 'bubble" level & bolt it down. Hope that helps....Longhorn __________________ 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....

08-01-2013, 08:09 AM	#10
mlevario99 Registered User Join Date: Apr 2010 Location: El Paso, TX Posts: 160	Re: 5.3with small block engine supports Thanks for all your help, I will try to do that crazy longhorn. I have the TransAdapt plates, I use the towers from CPP on my last swap, this time I was just trying to see if the original towers will work. Thanks

08-01-2013, 09:27 AM	#11
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: 5.3with small block engine supports i used the dirty dingo silder adapters with the stock mounts fit perfect __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

08-01-2013, 11:36 PM	#12
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	Re: 5.3with small block engine supports Let us know how she goes/ I have the Carshop inc plates for my swap, & they look to be close to what you have. The heads are in the shop, for my 5.3.... so I cant tell yet how it comes out? The thing I see (pics are deceiving), is that you don't have a for/aft issue, but more of a "pinch" issue? As said, I have seen a STOCK engine, in STOCK spot, be an issue , just swapping the mounts! Post any knowledge that you have on the fit....you might help this old man a tad Best of fun,longhorn __________________ 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....



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.