Need help with engine mounts/perches - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ghost's68 · 02-10-2018, 04:28 PM

I’m down to just figuring out what mound to run so I can finally drop my LS3 in. I bought some DD sliders and have them on the block now but the POL perches I bought don’t sit flush on the rail of the truck. Reading the instructions I see it says it might need modification to make them work. I don’t want to bend my rails if I don’t need too. I was thinking of getting the CPP and even buying the 73+ style.

What’s the best approach here considering I’ll be running LT headers?....

**Clyde65** · 02-10-2018, 06:18 PM

Just use the stock perches.

Ghost's68 · 02-10-2018, 06:56 PM

Quote:

Originally Posted by Clyde65

Just use the stock perches.

The PO hacker toghether a 5.3 swap and used what appeared to be the old perches but once I got the old motor out and i inspected the perches there was some damage to them and decided to just grab some new mounts. Plus I’m not sure if they were the SBC or 6cyl. Here’s a pic

Frankie P. · 02-11-2018, 03:21 AM

I just installed my L92 on my frame and used the POL engine perches. They fit well. Had to enlongate one hole on driver side and grind just a tiny bit in the frame edge so the holes line up. What I did was, leave perch bolts loose and the slowly torque them down until they fit flush.

02-10-2018, 04:28 PM	#1
Ghost's68 Registered User Join Date: Jun 2016 Location: American Canyon, CA Posts: 253	Need help with engine mounts/perches I’m down to just figuring out what mound to run so I can finally drop my LS3 in. I bought some DD sliders and have them on the block now but the POL perches I bought don’t sit flush on the rail of the truck. Reading the instructions I see it says it might need modification to make them work. I don’t want to bend my rails if I don’t need too. I was thinking of getting the CPP and even buying the 73+ style. What’s the best approach here considering I’ll be running LT headers?....

02-10-2018, 06:18 PM	#2
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,546	Re: Need help with engine mounts/perches Just use the stock perches. __________________ 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!*

02-11-2018, 03:21 AM	#4
Frankie P. Registered User Join Date: Dec 2015 Location: Huntington Beach Ca Posts: 41	Re: Need help with engine mounts/perches I just installed my L92 on my frame and used the POL engine perches. They fit well. Had to enlongate one hole on driver side and grind just a tiny bit in the frame edge so the holes line up. What I did was, leave perch bolts loose and the slowly torque them down until they fit flush.



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