Engine mount problems on my 67

[Donald O.]

Re: Engine mount problems on my 67

Yes, I put them on my '67. I wanted to switch to the safety type and the ones on my car appeared to be cheap repros from long ago. The Corvette Central ones Item# 302005 were 50 bucks, advertised as "correct" and on inspection were thicker metal than the ones I had, and fit perfectly without any need to massage the install. Car is still up on stands so I can get a photo if anyone wants.

Yes, please post some pictures.

DonO

[Donald A.]

Re: Engine mount problems on my 67

Yes, please post some pictures. DonO

1.jpg3.jpg4.jpg1.jpg

[Donald O.]

Re: Engine mount problems on my 67

Don,
Great shots!
Thanks.

Don

[Ken A.]

Re: Engine mount problems on my 67

Repro to the rescue!

[Domenic T.]

Re: Engine mount problems on my 67

Don,
Wish I knew that before I started. I was frizzled when I wrote my last post and was setting the shop up for our regular weekly get together.
Now that we know there are ones that fit that will save many here the grief of buying the garbage being sold.
After visiting all the local parts houses I was certain that I was the idiot that couldn't change a mount. My 45min job turned into a days work.
I first used my press to spread the ID, then made a drift that was 3/16" to get one started. Then used larger drifts but couldn't hit them hard enough to line things up. So I took my air hammer/rivet set and machined a drift to fit it and drove it thru. Had to remove the starter to get the room and had the trans mount loose to raise the trans which helped. The bolt only went thru one hole so I used a 90 degree drill and drilled the hole thru.
All that work for nothing, but after measuring all the mounts available here and the pair I bought 15 years ago, new at a swap meet, I thought my car was the problem. I think Joe would find it interesting that the parts guy said the SB mounts were different than BB mounts. That was because the computer asked for engine size. I told him to check part#s and he would see that they were one of the same.
I went thru the same problem when I changed the later style mounts on my 74 Laguna. That only took 2 of us about 4 hours to get the bolts thru.

Dom

[Joe L.]

Re: Engine mount problems on my 67

[ATTACH=CONFIG]60990[/ATTACH][ATTACH=CONFIG]60991[/ATTACH][ATTACH=CONFIG]60992[/ATTACH][ATTACH=CONFIG]60993[/ATTACH]

Don------

Thanks for the photos. From what I can see of them, these look good. However, I need to get one in my hand to peruse it more thoroughly.

By the way, I don't know if it matters to you but the through bolt on your engine mount is not correct. The original bolts did not have a chromate (i.e. "gold") overplate and the end of the bolt had a piloting tip.

[Donald A.]

Re: Engine mount problems on my 67

Don------By the way, I don't know if it matters to you but the through bolt on your engine mount is not correct. The original bolts did not have a chromate (i.e. "gold") overplate and the end of the bolt had a piloting tip.

Hi Joe, Thanks. Yes I try to correct all these things (yes I know the safety mounts are wrong for '67). The Corvette Central mounts required longer bolts than my old mounts, nothing I had or could find would fit so I bought the correct length ones from Corvette Central. I will keep an eye on eBay to try and find original bolts! thanks. -Don

[John C.]

Re: Engine mount problems on my 67

So what would be the correct gauge for an original non safety type mount? I have a set of Anchor 2249 mounts I bought last year. Boxes do not say made in China. Paid 18$ for the set. The mounts appear to be well made. The part that bolts to the engine measures .180" (7ga) and the part that hooks on the frame measures .161" (9ga). How does this compare to the GM mounts you guys have hoarded over the years?

[Joe L.]

Re: Engine mount problems on my 67

So what would be the correct gauge for an original non safety type mount? I have a set of Anchor 2249 mounts I bought last year. Boxes do not say made in China. Paid 18$ for the set. The mounts appear to be well made. The part that bolts to the engine measures .180" (7ga) and the part that hooks on the frame measures .161" (9ga). How does this compare to the GM mounts you guys have hoarded over the years?

John-------


Both sections of the steel frame of the GM mounts are right at 0.20" thickness.

[John C.]

Re: Engine mount problems on my 67

Thanks Joe
I guess 18$ a set was too good to be true.

[Joe L.]

Re: Engine mount problems on my 67

Hi Joe, Thanks. Yes I try to correct all these things (yes I know the safety mounts are wrong for '67). The Corvette Central mounts required longer bolts than my old mounts, nothing I had or could find would fit so I bought the correct length ones from Corvette Central. I will keep an eye on eBay to try and find original bolts! thanks. -Don

Don-------


If by original bolts you mean the original bolts used for a 1967, you don't need those. Those won't work for you as they're too short to use with the locking style mounts. The 63-69 bolts were 3-7/8" OL. They were GM 280M (3 lines), zinc plated, and with a piloting tip. The 1970-82 bolts were 4-7/16" OL. They were GM 300M (6 lines), phosphate finished, and with a piloting tip. You need the latter since you're using the 70-82 locking style mounts. Not too hard to get. They're still available from GM under the original part number of GM #399803. Of course, the 399803 won't be correct for a 1967 but the locking style mounts are not correct either. However, they'll be the correct ones for the locking style mounts.