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#57518346
$30.99
/each
In Stock
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2004R, 4L60E, 700R4, Powerglide, TH350, TH400
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Return PolicyThis adapter sleeve will connect a GM LS engine crankshaft to an older GM 2/3/4 speed automatic transmission torque converter. It centers the torque converter hub into the LS cranksaft. Use with flexplate adapter 57534610.
For 1997-07 GM LS1/LS6 engines (up to '09 for LS2) and 4.8/5.3/6.0 truck engines including L33, L59, LM4, LM7, LQ4, LQ9, and LR4. Adapts all of these engines to TH350, TH400, 700R-4, 200-4R, early 4L60 and Powerglide transmissions that originally came behind a non-LS engine (such as a SBC or BBC V8).
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| KEY SPECS | |
|---|---|
| MFG. Part # | 57518346 |
| Brand | Speedway Motors |
| GENERAL | |
| Sold in Quantity | Each |
4.9
40 Reviews
Customers highly recommend the product for LS swap builds as it flawlessly mates old transmissions with new motors. The product is lauded for its perfect fit and easy installation, providing added length as needed. It's praised for solving vibration issues and aiding in motor swapping conversions. Warning: some customers found the need for longer bolts for the flywheel or spacers. Quality, affordability, and practicality make this product a favorite for LS conversion projects, repeatedly matching transmissions to LS platforms seamlessly. Majority of customers would certainly re-purchase and recommend.
4.9
40 reviews
5
38
4
1
3
1
2
0
1
0
Most Liked Positive Review
5.0
Worked perfect .
It would be nice if it had longer bolts for the flywheel or spacers. Once I put it in and tried to bolt the flywheel to the torque converter what I thought would be a problem became evident, it wouldn't bolt up because my bolts weren't long enough. Lucky for me to have the foresight to get some longer flywheel bolts off of a newer chevy before I put it in. Other than that solved my problem got me back on the road.
Most Liked Negative Review
3.0
Definitely recommending product to friends
Great product worked just as advertised with a preside fit
Filter by Ratings
I would recommend this
5.0
a year ago
JJ
Wisconsin Oshkosh
Verified
Great price for this part
Would Recommend
Great product
5.0
a year ago
Ratpwr
NJ
Verified
This product fits perfectly in the back of the crankshaft and also on the hub of the converter
Would Recommend
THANK YOU
5.0
2 years ago
RONNIEO
E.R., WI
Verified
THOUGHT I WAS SCREWED. HAD R/B 1998 4L60E AND IT WOULD NOT FIT 1999 LS. THIS ADAPTER SAVED ME
Would Recommend
Good quality. Thank you!
5.0
4 years ago
Celeste
Oklahoma
Verified
Great product. Fits as it should.
Would Recommend
Perfect fit
5.0
4 years ago
Beto
Az
Verified
I would recommend this to anyone who is doing an LS swap on and mounting it to a older GM transmission
Would Recommend
I would buy this again
5.0
5 years ago
Scott Schmitt
Glenwood iowa
Verified
A family member referred me and great service totally my future purchases from this company.
Would Recommend
Awesome product!
5.0
5 years ago
Noah p
Illinois
Verified
Fast shipment, and product worked flawlessly
Would Recommend
Worked perfect .
5.0
5 years ago
Adam Town Hero
Bakersfield Ca
Verified
It would be nice if it had longer bolts for the flywheel or spacers. Once I put it in and tried to bolt the flywheel to the torque converter what I thought would be a problem became evident, it wouldn't bolt up because my bolts weren't long enough. Lucky for me to have the foresight to get some longer flywheel bolts off of a newer chevy before I put it in. Other than that solved my problem got me back on the road.
Would Recommend
Yes
4.0
6 years ago
cwandds
Oklahoma City, OK.
Verified
This is the adaptor you need, if your bolting a 700R4 transmission to a LS1, along with LS1 flexplate.
Would Recommend
yes
5.0
6 years ago
dave
France
Verified
perfect fit
Would Recommend
Showing 10 of 40 reviews
14 Questions • 13 Answers
Will this adapter work for a powerglide as well?
by Alan
• 7 years ago
1 answer
View Answer
Hello. Wish to put an LS in my 75 Jimmy. 4x4. Any issues with a 4wd TH350?
by Greasy D
• 7 years ago
1 answer
View Answer
Will this spacer work for me to install the 96-99 5.7 4l60 trans to my 5.3 motor ? I have to run a the spacer and drill the holes in the 5.3 flex plate to install the 5.7 Converter
by Matthew
• 7 years ago
1 answer
View Answer
1999 GMC K1500 Suburban 4x4, original, stock 5.7L and 4l60e. Adding Danchuk 10100 adapter plate. But the flexplate spacer that came with Danchuk kit doesn't mate to the flexplate. Can't tell what spacer to buy - not enough detail in the descriptions - saw a video that said a "torque converter snout" might be all I need, but didn't mention a part number. Is this item the aforementioned "snout" and well it work in my application? If no, could you, would you point me to the correct part(s) to solve my dilemma? Many thanks, Ed
by Ed
• 7 years ago
1 answer
View Answer
Im looking at a blue print 427 lsx 8 bolt holes for the crank. I want to mate this engine to a turbo 400. With this adapter work? Also I need a sfi approved flexplate. Thanks
by Matt
• 8 years ago
2 answers
View Answers
I have a 2005 5.3 lm7. Will this spacer allow me to bolt up a 4l60e out of a 98 Tahoe
by Rioco
• 8 years ago
3 answers
View Answers
Installing a 2005 LS2 into a 1986 K5 Blazer, using a 4L80E 4WD Trans. Needing to know if there's an adapter offered so I can bolt up to the original Transfer Case! Thank you!
by Welch
• 8 years ago
1 answer
View Answer
Will this work for a gen4 6.0, to put a th350
by Jr
• 9 years ago
1 answer
View Answer
I have a 200r4 going behind a 6.0L lq9. Would this work for me? All these spacers seem the same, some are just $30 more than others for some reason.
by Matt
• 10 years ago
1 answer
View Answer
will this adapter work on my th350 and the original flex plate on the 5.3 with the longer bolts?
by houston
• 10 years ago
1 answer
View Answer
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