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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Aug 2010 Posts: 105 Shop Shark | | Shop Shark Joined: Aug 2010 Posts: 105 | I'm confused about what front motor mounts to use on a V8 in my 55 2nd 6100. The ones that are sold by the vendors and listed as V8 are these 2 1/2" between washers. The 55 shop manual shows these 1" between washersfor a V8 and the 2 1/2" between washersfor a 6 cylinder. I have the taller ones in my truck herebut I have a firewall clearance problem with my valve covers. I tried the short mounts and they solve the valve cover problem but they don't line up with the motor brackets (no photo sorry). I'm thinking of modifying the brackets to 1 3/8" between washers. That would solve the valve cover problem and I think they will line up properly . Has anyone ever run into this before? Thanks! | | | | | Joined: Jul 2001 Posts: 3,887 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Jul 2001 Posts: 3,887 | that shop manual pic is misleading, note the offset jog in the middle of the pin where they "photochopped" it .... mounting the front that low would give problems with misalignment stresses on the rear mounts and the trans angle to the front U-joint
what's the V8 you're trying to install? do you have the correct engine brackets? are they in the right place?
the mounts from the vendors are correct and work fine in any 56-58 I've put them in with 283's and 350's, there will be a problem with clearance for an HEI, but the stock valve covers shouldn't be touching
Bill | | | | | Joined: Aug 2010 Posts: 105 Shop Shark | | Shop Shark Joined: Aug 2010 Posts: 105 | Thanks squeeze, I should have mentioned I have the tall valve covers. My motor is a 350 with roller rockers and rocker girdles. I should be able to make some modification and make it work with the correct front mounts. I have a small HEI dist. that will work. What application are the short motor mounts used for? Just curious.Thanks again. SEE YA! Mark | | | | | Joined: Jul 2001 Posts: 3,887 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Jul 2001 Posts: 3,887 | | | |
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