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Hurst-style Front Cradle Mount
#1368420 Thu Jul 09 2020 11:27 PM
Joined: Nov 2000
Posts: 2,021
F
Frank50 Offline OP
'Bolter
Has anyone used a Hurst-style cradle front engine mount to put a SBC in an Advance Design truck? Lots of discussions about lots of options for this swap, but I have not read of this mount being used in an A D truck. I know it’s somewhat popular in Model A and other brand hot rods.
Thanks.

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Professional Novice
Re: Hurst-style Front Cradle Mount
Frank50 #1368427 Fri Jul 10 2020 12:21 AM
Joined: Dec 2008
Posts: 402
F
Shop Shark
I have that in my Task Force school bus, but I have it with a 454. I am going to be changing over to the side motor mounts here in the next month or so. I'm adding power steering to my bus and need the space for the pump.


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Re: Hurst-style Front Cradle Mount
Frank50 #1368439 Fri Jul 10 2020 01:47 AM
Joined: Mar 2010
Posts: 9,759
5
'Bolter
The frame of an AD truck is likely way to narrow for one of those to fit.

Re: Hurst-style Front Cradle Mount
Frank50 #1368567 Fri Jul 10 2020 08:39 PM
Joined: Apr 2005
Posts: 2,837
C
'Bolter
This style mount was used in some of the bigger trucks and also in the 1956-60 Corvette sandwiched between the water pump and block. As stated, it is in the way of other accessories like p/s or a/c.


Evan
Re: Hurst-style Front Cradle Mount
Frank50 #1368576 Fri Jul 10 2020 09:25 PM
Joined: Nov 2000
Posts: 2,021
F
Frank50 Offline OP
'Bolter
Thanks all.

According to the dimensions given on Speedway’s listing for this item, the overall length is 21 5/8”. According to the frame drawing in the 48-51 Truck Shop Manual the outside width of the frame at the front is 25 1/2”, for 3100 and 3600 trucks. It is a little wider where the mount would go. That’s why I thought it might work.

http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0202.htm

https://www.speedwaymotors.com/Spee...p;utm_content=Speedway%20%20(Feb28_2020)

Last edited by Frank50; Fri Jul 10 2020 09:58 PM. Reason: added info

Professional Novice
Re: Hurst-style Front Cradle Mount
Frank50 #1368631 Sat Jul 11 2020 03:03 AM
Joined: Feb 2004
Posts: 22,980
H
'Bolter
If you use the original type rear mounts at the bellhousing, that mount should work well. Suspending an engine and transmission assembly with a front mount and one at the transmission tailshaft housing would put a great deal of stress on the bellhousing, especially if it's made of aluminum.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Hurst-style Front Cradle Mount
Frank50 #1368693 Sat Jul 11 2020 05:26 PM
Joined: Nov 2000
Posts: 2,021
F
Frank50 Offline OP
'Bolter
Thanks


Professional Novice
Re: Hurst-style Front Cradle Mount
Frank50 #1373021 Tue Aug 11 2020 11:15 PM
Joined: Nov 2000
Posts: 2,021
F
Frank50 Offline OP
'Bolter
Deve hosts on his site [devestechnet.com] a scan of a February 1977 Street Rodder article by Pat Granahl V-8 Juice for Your Stovebolt [devestechnet.com]. In it he describes using a saddle or crossmember mount like this [speedwaymotors.com] which I guess has been used 1000s of times. He also details moving the steering box outboard the frame 1 1/2” and using 307 smog motor exhaust manifolds for clearance. That might be better than the front cradle mount.


Professional Novice
Re: Hurst-style Front Cradle Mount
Hotrod Lincoln #1373065 Wed Aug 12 2020 06:17 AM
Joined: Dec 2014
Posts: 815
M
'Bolter
Originally Posted by Hotrod Lincoln
Suspending an engine and transmission assembly with a front mount and one at the transmission tailshaft housing would put a great deal of stress on the bellhousing, especially if it's made of aluminum.

That is the prevailing wisdom, and it seems logical, but has anyone actually ever documented a healthy bellhousing or mounting bolts failing from front & rear engine/trans mounts? Excluding 600hp, 5000 rpm clutch drops, of course... nono

I ask because many times the front mounts would have been an easier solution for me, but I refrained for fear of bellhousing stress. And really, on an SBC the front mounts are only a few inches ahead of the side mounts...


1951 Chevy Panel Truck
Re: Hurst-style Front Cradle Mount
Frank50 #1373122 Wed Aug 12 2020 05:59 PM
Joined: Feb 2004
Posts: 22,980
H
'Bolter
Use a cast iron bellhousing, and you can probably get away with having no support in the bellhousing area. I wouldn't even consider it with one of the flimsy aluminum ones the later models with the 3-point mounts used. The first big bump you encounter might get exciting when the bellhousing breaks. The original Hurst-style mount also prevents the engine from running a mechanical fuel pump unless you cut a hole in the mount for fuel pump clearance, and even then, changing a pump becomes quite an adventure.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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