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1955-57 Chevy Engine Block Side Mount Kit

Specs
Material Type:
Steel
Finish:
Painted
Sold in Quantity:
Kit
Overall Height:
4.250
Overall Width:
4.500
Overall Length:
6.750
Tube I.D.:
.635
Material Thickness:
.225
Notes
Rubber motor mounts not included.
1955-57 Chevy Engine Block Side Mount Kit

Click image to enlarge

Please note the following about this product:

  • This item is sold as a kit.

Details

Reviews (8)

Q & A (5)

What's in the Box

Info

On your 1955-57 Chevy car, the front motor mounts are at the front of the block and the rear mount attaches to the bellhousing. This works fine for original use but makes it hard to swap in a different trannsmission or add belt driven accessories to the front of the engine.

Use with engine cushions 910-18012 and transmission crossmember 916-28910 listed below. No welding, but drilling required.

720-4175 Instructions (PDF)

Customer Reviews

Rated 4.8 out of 5 by 8 reviewers.
RATING BREAKDOWN
8 reviews
5 Stars
6
4 Stars
2
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Plyjunkie
Verified Purchaser
Bakersfield, CA

These mounts make installing a late small block Chevy , easy

October 08, 2015
A simple straight forward engine swap mounting that can be bolted in or welded
Yes, I recommend this product.
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hobbyman
Verified Purchaser
ohio

good product

November 01, 2014
well made quality product. shipped fast. only down side would have been nice if came with bolts
Yes, I recommend this product.
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Zach55
USA

The best mounts for your Tri 5

August 12, 2014
These are by far the best mount option for a Tri 5 Chevy. They can be welded or sometimes bolted, dePending on the frame you have. I've installed 4 sets of these and about half of the time they need to be welded on, however that is because 55-57 Chevy frames do vary quite a bit. The other options out there aren't nearly as strong, and dont allow for the needed clearance when you want to run power steering pumps and or headers on a small block.
Yes, I recommend this product.
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Steve
Verified Purchaser
ri

excellent quality

September 18, 2012
excellent product
Pros:
  • High-Performance
  • Powerful
  • Reliable
  • Can Withstand Use
Yes, I recommend this product.
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klum46
Rosenberg Texas

A well made product. I can recommend.

June 23, 2012
The bracket part # 4175 does not come with pads. The recommended part #910-18012 for the pads from Speedway. The bracket has mounting holes that require a 9/16 bolt. The largest bolt that will fit the pads is 7/16. I had to drill out the pad ears to 9/16 in order to use the sturdier bolt. Trans Dapt mount pads do not seem to be offered. It is part # 9525. I do not know if Trans Dapt pads will accept the 9/16 bolt either. I did not want a sloppy fit but it would certainly be easier to line up using the smaller bolt in the larger hole.
Pros:
  • Can Withstand Use
Yes, I recommend this product.
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Craig
Verified Purchaser
Colorado Springs Co.

Great solution time saver

May 08, 2012
This saved alot of time and money by not needing to make our own mounts.
Yes, I recommend this product.
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Fran
Verified Purchaser
Penna.

sbc side mount kit

July 10, 2011
They work good, might have to use spacers on your rubber mounts to make it fit. Other than that they're great product.
Pros:
  • High-Performance
  • Can Withstand Use
Yes, I recommend this product.
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Jxnslotcar
Verified Purchaser
Jackson,Michigan

SBC into a 1955 2 dr post Chevy

December 16, 2010
Pretty easy to use.and will be buying them again. Make sure you mock up before drilling and welding brackets into frame. Very strong and well made product!
Pros:
  • Ease of Use
  • Quality
  • Price
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

5 questions : 9 answers

2 answers

Can the motor mounts be installed without pulling the engine?

Greg1955
Elliston, VA 24087, USA
July 04, 2013

Can the motor mounts be installed without pulling the engine?

Answers

November 02, 2014
hobbyman
anything is possible, but not practical. have to drill holes to bolt or acess to weld . would not reccommend
July 05, 2013
Jason
The Tri-5 Chevy side mount kit number 7204175 would be difficult to install with the engine in the car. Drilling and bolting the vertical portion of the bracket to the inside of the frame rail would be the problem area. The only option would be to come from the bottom side and actually mig or tig weld the bracket to the frame.
2 answers

Can these mounts be used with the stock gear box?

April 30, 2011

Can these mounts be used with the stock gear box?

Answers

November 02, 2014
hobbyman
yes. mount in front of steering box original or aftermarket
May 04, 2011
John W
These should work to eliminate the front mount and the bell housing mount and still work with the stock steering gear. It should keep the engine in the stock location and customers have moved the engine forward slightly for a gain in distributor clearance. The transmission cross member kit number 91628910 completes the transformation for a more durable and up to date mount system.
2 answers

Can these be used to move the engine forward to clear an HEI distributor?

March 09, 2011

Can these be used to move the engine forward to clear an HEI distributor?

Answers

November 02, 2014
hobbyman
I doubt it. I would use a flat plate where stock mount bolts to side of block,the drill for u side of mount to move engine forward
March 17, 2011
Zach
You could move the engine forward with these, however if your car is already put together you would need to change your rear transmission cross member and mount, the exhaust, and you might have to have a longer driveshaft, maybe more depending on your application. I would recommend getting a small body distributor instead. This would be much faster and more cost effective. You might consider this one (5478360) http://www.speedwaymotors.com/MSD-Chevy-V8-with-Internal-Module-Distributor,8974.html. It is a ready to run distributor, meaning you don't need any ignition box to install this distributor. The smaller cap should fit in place of a points type distributor.
2 answers

Will these mounts work with sbc block hugger headers?

Zimm
Boise Idaho
March 08, 2011

Will these mounts work with sbc block hugger headers?

Answers

November 02, 2014
hobbyman
I see no problem
March 17, 2011
Bill
These 1955-57 Chevy motor mounts are designed to bolt to the side of the block and allow the use of most block hugger and long tube style headers. Do to different brand of headers it is impossible to say they will work with all headers, it would be up to the installer to determine if they will work with your application.
1 answers

Can I presume these will work with a big block Chevy also?

Big D
Pleasant Garden N.C.
February 15, 2016

Can I presume these will work with a big block Chevy also?

Answers

February 17, 2016
John
Expert
These mounts will work for both small block and big block engines but the ability to move the engine front to back is normally limited to no more than 3/4".
Page 1 of 1

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