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Rocker Arm 3/8 Inch Poly Locks

SAME DAY SHIPPING! Most orders ship within 24 hours.

Specs
Overall Height:
1.10
Sold in Quantity:
Set
Outside Diameter:
.600
Rocker Arm 3/8 Inch Poly Locks

Click image to enlarge

Please NOTE the following about this product:

  • This item is sold as a set.

Details

Reviews

Q & A

What's in the Box

These Poly Lock 3/8" Set of special heat treated and plated 3/8" thread sure-lock nuts are supplied with an allen wrench. Set of 16.  5/8" Hex.  For use with stock style rocker arms.  .600 Diameter.

Customer Reviews

Rated 4.7 out of 5 by 6 reviewers.
RATING BREAKDOWN
6 reviews
5 Stars
4
4 Stars
2
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Jonathanr985
Verified Purchaser
Valdosta ga
Product Rating

Great product

March 03, 2013
Fast shipping and easy to install thanks for another great product.
Pros:
  • Easy To Install
Yes, I recommend this product.
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[*]
Verified Purchaser
littleton,co
Product Rating

Easy to use and makes setup time a breez

March 01, 2012
Saved a bunch of time setting valve lash.
Pros:
  • Durable
  • Increases Power
  • Lightweight
  • Improves Engine Efficiency
  • Easy To Install
Yes, I recommend this product.
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Dinger
Bismarck, ND
Product Rating

Good Stuff

February 27, 2011
Install easy, nice finish, and great price.
Yes, I recommend this product.
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36 Coupe
Verified Purchaser
Topeka Kansas
Product Rating

I'm very happy with my purchase

July 31, 2010
my cam has enough lift that the adjuster nuts would back off. This product solved my problem.
Pros:
  • QUALITY PRODUCT
Yes, I recommend this product.
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Dutch
Verified Purchaser
Grifton,NC
Product Rating

a must have for every racer.

March 29, 2012
I recommend this product for anybody building a sbc, especialy stock replacement.
Pros:
  • Durable
  • Easy To Install
Yes, I recommend this product.
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Andrew17
Verified Purchaser
Product Rating

Works great.

April 27, 2014
Installed very easily and nuts were longer than the nuts that came with my rockers ,so the set screws tighten down without stripping the threads.Works great for my Ford 351W heads.
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

5 questions : 5 answers

you`re poly lock hex doesn`t clear the rocker on my flo teck heads

1 answers
edras58
March 01, 2014

you`re poly lock hex doesn`t clear the rocker on my flo teck heads

Answers

March 03, 2014
EricM
depending upon the rocker arms used that can be an issue. You may try a different poly lock like part number 91599788 which has the hex up higher and thinner. The hex is the same 5/8" wrench size however

Will Polly locks work on a 340 solid chrystler? 1971 style.

1 answers
Teddy
Hillsboro, OR, USA
May 03, 2013

Will Polly locks work on a 340 solid chrystler? 1971 style.

Answers

May 03, 2013
Jason
Polylock number 550920 can be used with most stock style rocker arms to lock in lifter adjustment on hydraulic or solid lifter cams.

I have a chevy 348 with stock valve covers. Will these lock work for this applic ation. I noted another guy said they maybe to short. I do not want long ones to hit valve cover. Also are they 3/8-24 thread.

1 answers
bucky
Lake Stevens, WA, USA
February 03, 2013

I have a chevy 348 with stock valve covers. Will these lock work for this applic ation. I noted another guy said they maybe to short. I do not want long ones to hit valve cover. Also are they 3/8-24 thread.

Answers

February 04, 2013
Jason
This poly lock set is listed for the small block Chevy and Ford 302 with stamped rocker arms. They are 3/8-24 thread, overall height is 1.10" and is .600 in diameter

I have a set of these, or similar set. they bottom out before they reach the rocker ball. I have 3/8" screw in studs on a factory stock racing chevy 350. Do I need to use hardened washers to make up the difference or do they make these with longer thread

1 answers
Bobby
Phoenix, AZ
August 10, 2011

I have a set of these, or similar set. they bottom out before they reach the rocker ball. I have 3/8" screw in studs on a factory stock racing chevy 350. Do I need to use hardened washers to make up the difference or do they make these with longer thread

Answers

August 11, 2011
Mike
You may have a long stud in the head. Some aftermarket studs are too long and cause issues with polylocks. I would not recommend using washers.

Will these fit the stock style with the roller tips?

1 answers
June 20, 2011

Will these fit the stock style with the roller tips?

Answers

June 21, 2011
Jason
Yes, these will work fine for this application
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