Big Block Polyurethane Motor Mounts 440 Source

Posted By: Torq37

Big Block Polyurethane Motor Mounts 440 Source - 07/19/21 05:16 PM

Looking for some feedback on the quality of big block polyurethane mounts sold by 440 Source. I have yet to find a stock rubber mount that is anywhere close to right so I'm considering these.

It's been reported here before that the rubber mounts on the market today must all come from the same source as they all have the same fitment problem. Bolt hole positioned wrong and dimple in wrong location.

Also wondering about the vibration level of polyurethane compared to rubber mounts?

Posted By: ph23vo

Re: Big Block Polyurethane Motor Mounts 440 Source - 07/19/21 08:49 PM

any poly or aftermarkets performance mounts transfer much more vibration thru car is the only real drawback...

Posted By: therocks

Re: Big Block Polyurethane Motor Mounts 440 Source - 07/20/21 11:34 AM

We ran and run all poly mounts.Mine 65 BB kid ran them in his 62 300 413 They all were from Imperial services even trans mounts Got tired of tearing mounts after a little while Mine have been in probally 15 years.Kids were in almost as long when he sold car.Vibration is not much more than stock.Rocky

Posted By: Twostick

Re: Big Block Polyurethane Motor Mounts 440 Source - 07/21/21 01:45 AM

Originally Posted by therocks

We ran and run all poly mounts.Mine 65 BB kid ran them in his 62 300 413 They all were from Imperial services even trans mounts Got tired of tearing mounts after a little while Mine have been in probally 15 years.Kids were in almost as long when he sold car.Vibration is not much more than stock.Rocky

I had the ones from Schumacher. 2 sets, both melted. Good idea, bad execution.

Kevin

Posted By: therocks

Re: Big Block Polyurethane Motor Mounts 440 Source - 07/21/21 02:43 PM

Kevin if they melted something was wrong.When steve from Imperial gave me and Jesse ours he was with Schumaccer Dont know if they were the saem as 65 mounts were no avaliable till he made them Still have on from the 62 in the garage Jesse thought it split and steve gave him anothe one.It was a casting mark Mine have been on the 65 for at least 15 years or more Same with trans mount.Rocky

Posted By: Torq37

Re: Big Block Polyurethane Motor Mounts 440 Source - 07/21/21 05:25 PM

The 440 Source mounts are the only 66-72 B-body mounts on the market that I’m aware of and appear to be a new product.

I’m mainly concerned about the fitment. Don’t want to spend $150 if they are dimensionally the same as the import rubber mounts currently on the market.

Posted By: Twostick

Re: Big Block Polyurethane Motor Mounts 440 Source - 07/24/21 04:08 AM

Originally Posted by therocks

Kevin if they melted something was wrong.When steve from Imperial gave me and Jesse ours he was with Schumaccer Dont know if they were the saem as 65 mounts were no avaliable till he made them Still have on from the 62 in the garage Jesse thought it split and steve gave him anothe one.It was a casting mark Mine have been on the 65 for at least 15 years or more Same with trans mount.Rocky

I had Heddman shorties on it and they were pretty close. The guy from Schumacher that used to come to Carlisle said they were having issues with the stuff they were molded out of and replaced them on the spot.

It took a while for the first set to disintegrate but the second set didn't last a couple trips to town. The mechanical lock part was good but the poly stuff was toast.

Kevin