Hurst engine mounts (SBC)

Question about the Hurst-style universal engine mounts for the Small Block Chevrolet as sold by Speedway motors. I think these use the ‘55-‘57 front mount locations on the block; so what are people using for rear mounts? If you were running a stick, I guess it would be as easy as finding a ‘55-‘57 bellhousing, but what if you want to run a TH-350/400/700-R4 instead of a '55-'57 Powerglide?

Thanks,

Dave

 

You make ears to bolt to the transmission mount bolts at the block.

I think you can atually buy those from speedway as well.

 

Beaner's right, I had a 57 Chevy with a 327 and turbo 350 and they ( Speedway ) sold me the front mounts along with the rear that bolted to the trans bolts. It was a C shaped mount that used 2 bolt holes on each side. But that was back in the 70s and I sold the car before I ever got it on the road so I don't know how good they worked. They may still have them available.

 

You can still buy the '56/'57 front biscuits from Autozone for about 15 bucks. They are perfect to use with a hurst mount and normally it takes a day to get them from the warehouse.

 

As always, good helpful info from beaner.

 

I am just cheap, actually I have made lots of money in my lifetime but I ahve alwasy been cash flow challenged. The upside I am pretty good at finding an affordable solution.

 

I always said that if I knew then what I know now I could have been broke alot sooner.

 

Thanks guys, but I'm having a little difficulty picturing this. You mean these C-shaped ears sandwich between the transmission bell and the block?

I'll check out Speedway's website too, to see if I can find the parts.

Regards,

Dave

 

Sorry about jumping this thread, we now return to our regular program,

 

Danchuk 55-57 Chevy parts sells what you are looking for as do all the Classic Chevy dealers. If you use a Hurst front mount you should/must use a mid mount because the distance is too long if you have a rear trans mount especially on a turbo 400 you will crack the trans case. Hope I didn't confuse things.

Pat

 

No, they fit on the outside of the trans. To sandwich it would screw up the torque converter to flexplate fitment.

 

Oh, ok. I can see it now. The flange of the bell is sandwiched between the rear mount and the engine block.

Not sure why I couldn't figure that out before.

Thanks!

-Dave

 

No confusion, I knew that, which is why I asked in the first place. The only confusion would be to term the bellhousing mount as a "mid" mount, as that's how I've traditionally heard the later, '58-up engine mount termed.

-Dave

 

That's it,

 

I didn't jump in there because I knew you would/could figure it out.

Sometimes it is best to just point and let the fella figure out that he really does know he just doesn't know that he knows. You really know way more than you realize my friend.

 

I installed a Hurst motor mount system on my '55 Chevy Wagon. The Hurst mount does not allow you to run a mechanical/stock fuel pump. Ended up having to block off the fuel pump opening and installing an electric fuel pump. I recommend buying Speedways Engine Mount Cushioning Kit if you go with their front Hurst style motor mount system. The Hurst style biscuits are at least 150% larger in diameter than the 55-57 stock rubber biscuits, plus you get the hardware with them.

 

Crud! I was planning on a Hurst mount for my SBC in my AV8, but I just read Cerberus' post above that it can't be used with a mechanical fuel pump. Is there no clean way around this to use the Hurst mount with a mech. fuel pump?

Thanks!

 

Does your sbc not have provisions for side mounts ? If so, there are so many advantages to using them, such as better support, balance, and not needing to run the mid mounts on the bellhousing. You can also run a mechanical pump.

The main reason we ran the Hurst type in the old days was because the early motors used front mounts only, so that was our only solution.

Don

 

I can't speak for Tommy R, but for me, it's more of an issue of a lot going on in that area of the car already.

 

I'm pretty sure you just make spacers that go between the front of the block and the hurst style mount to make room for a mechanical fuel pump...
if your handy with a torch the hurst style mounts are pretty easy to build - I am sure there are dimensioned drawings here in the tech posts...
my local napa has the 55-7 biscuit mounts in stock, I use them for trans mounts, body mounts, engine mounts, etc...

 

You are correct Dan, the mech pump can fit, there are pictures on here somewhere.

 

for many years when using the b/m hydrostick castiron case
i had a hurst front mount with a muffler clamp around the tail shaft at the rear with a inch sq tubing ''cross member''[was meant to be a 1 day solution,but found that this allowed the frame to twist freely] and raced this way until recently put in a Mikes Transmission monster 350th....

used the speedway circle track mid support brackets......
these are made by allstar under there quicktime label available at Summit..

allstarquicktime also has the same midmt in a one piece style that is a starter ringgear shield>allstar quicktime 6090 summit.........also photo of neat alt mt on the hurst mt my son did for me.........need to install longer guide pin dowels&the converter spacer kit or have it added when you order your converter.......

 

Don,

Now that you mention it, I guess I never gave it much thought. Yes, mine has side mounts on it now, but I just like the look of the Hurst mount. But I can now see that it's a lot farther forward than the OEM mount location on my late '60s/early '70s block. Looks like it's time to do some more research to determine if running the Hurst mount is worth it for me.

Thanks,
Tommy

 

im running just the the front mount and tail mount of a th400 and im still waiting for my transmission case to break.

 

Yep, I understand, sometimes we do things like this for the oldtimey look. I have a similar situation where I am using a 394 Olds in my new project and they do not have provisions for side mounts, so we had to build a Hurst style front mount for it. I was going to run just that and the one on the adapted th350 tailshaft but some members on another forum gave me hell and said I would crack the bellhousing. (I knew deep down they were right but I was trying to avoid more work ) We did fabricate a set of side mounts that come off of the bellhousing to take some strain off of it, and I am glad we did. Now the motor is supported well. But if I could have just used side mounts it would have been so much better.

Here is how we did ours:

 

Thats nice Don. And the engine color is COOL

 

All the 55-57 Chevy parts vendors sell a mid-mount kit which uses one bracket on the trans flange and one one to the original mount bracket with a pair of rubber donut insulators. Works well on our 57 and easy to modify for another application I think.

 

I run original flathead v8 front rubber biscuts with my old Hurst mount on a`32. Washers between the mount and block gives clearance for a mechanical fuel pump.

 

You can use spacers to gain enough room to use the fuel pump with these mounts. I can't remember how big the spacers need to be, I'm thinking 1/2-3/4 of an inch would be enough. Please correct me if I'm wrong. I was going to use one of these but went another way, but was told to space the frount mount to use the stock pumpif that was what I was going to use.

 

I put close to 100.000 miles on a hotrod set up this way and was still working great the last time I saw the car.