Ls swap questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Plunkett · 04-10-2012, 02:16 PM

I've searched on here and everytime I seem to read some good info on motor mouts I read something else that throws me off. I need some suggestions. I'm working on a 72 chevy c10. I plan on putting a 5.3 engine into the truck mated to a th350 tranny. My goal is to mount the engine in the stock location so that it bolts up to my tranny and so I will be able to run the stock mechanical fan. I also want to be able to run headers. I don't mind spending the money on the new mounts like early classic offers. Also, I'd like to be able to run the dynatech 2nd gen fbody headers or 4th gen headers on this truck to keep cost down.

usmcchevy · 04-13-2012, 08:32 PM

Best bet may be to leave the tranny in the truck, mount the motor to the trans then see where it sits. Then order some mounts or adapter plates. That way you won't have to mess with your drive shaft. Stock fan should be no problem.
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gringoloco · 04-14-2012, 12:45 AM

1" setback adapter plates should place the bellhousing flange in the same relative position as stock, leaving your trans and driveline untouched. I'll be testing this theory soon on my truck. The EC mounts will place it around 3" too far forward. F-body headers should fit no problem in the stock position, but some have had fitment issues. They will hang below the framerails...
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Plunkett · 04-14-2012, 12:59 AM

After further researching on motor mounts. I want to hear everyones opinions of this. I'm looking at running the pol tublar mounts with the hooker engine plates to set the sbc in the stock location. How does that sound?

**Clyde65** · 04-14-2012, 09:22 AM

The POL perches will allow you to place the motor in the front or rear two mounting holes. I think this is a much better option, it is what I used on my 65 swap.

Plunkett · 04-14-2012, 09:58 AM

Clyde, if I run the Pol tubular perches, what plates would you suggest I run to mount the engine where the sbc originally was?
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**Clyde65** · 04-14-2012, 01:09 PM

I would also use the ones mentioned that are adjustable. I am not sure if the Dirty Dingo mount plates would work, but I dont see why not.

04-10-2012, 02:16 PM	#1
Plunkett Registered User Join Date: Nov 2009 Location: Chattanooga, TN Posts: 140	Ls swap questions I've searched on here and everytime I seem to read some good info on motor mouts I read something else that throws me off. I need some suggestions. I'm working on a 72 chevy c10. I plan on putting a 5.3 engine into the truck mated to a th350 tranny. My goal is to mount the engine in the stock location so that it bolts up to my tranny and so I will be able to run the stock mechanical fan. I also want to be able to run headers. I don't mind spending the money on the new mounts like early classic offers. Also, I'd like to be able to run the dynatech 2nd gen fbody headers or 4th gen headers on this truck to keep cost down. __________________ 1987 gmc sierra v1500. 350 tbi, 700r4, 6" sky jacker lift, 15" Mickey Thompson wheels, and 35" bf Goodrich km2 tires.

04-13-2012, 08:32 PM	#2
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: Ls swap questions Best bet may be to leave the tranny in the truck, mount the motor to the trans then see where it sits. Then order some mounts or adapter plates. That way you won't have to mess with your drive shaft. Stock fan should be no problem. Posted via Mobile Device __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index

04-14-2012, 12:45 AM	#3
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,921	Re: Ls swap questions 1" setback adapter plates should place the bellhousing flange in the same relative position as stock, leaving your trans and driveline untouched. I'll be testing this theory soon on my truck. The EC mounts will place it around 3" too far forward. F-body headers should fit no problem in the stock position, but some have had fitment issues. They will hang below the framerails... Posted via Mobile Device __________________ -Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy

04-14-2012, 12:59 AM	#4
Plunkett Registered User Join Date: Nov 2009 Location: Chattanooga, TN Posts: 140	Re: Ls swap questions After further researching on motor mounts. I want to hear everyones opinions of this. I'm looking at running the pol tublar mounts with the hooker engine plates to set the sbc in the stock location. How does that sound? __________________ 1987 gmc sierra v1500. 350 tbi, 700r4, 6" sky jacker lift, 15" Mickey Thompson wheels, and 35" bf Goodrich km2 tires.

04-14-2012, 09:22 AM	#5
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,546	Re: Ls swap questions The POL perches will allow you to place the motor in the front or rear two mounting holes. I think this is a much better option, it is what I used on my 65 swap. __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

04-14-2012, 09:58 AM	#6
Plunkett Registered User Join Date: Nov 2009 Location: Chattanooga, TN Posts: 140	Re: Ls swap questions Clyde, if I run the Pol tubular perches, what plates would you suggest I run to mount the engine where the sbc originally was? Posted via Mobile Device __________________ 1987 gmc sierra v1500. 350 tbi, 700r4, 6" sky jacker lift, 15" Mickey Thompson wheels, and 35" bf Goodrich km2 tires.

04-14-2012, 01:09 PM	#7
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,546	Re: Ls swap questions I would also use the ones mentioned that are adjustable. I am not sure if the Dirty Dingo mount plates would work, but I dont see why not. __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

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