LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate – SFI 29.1 Certified

LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate - SFI 29.1 Certified
LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate - SFI 29.1 Certified
LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate - SFI 29.1 Certified
LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate - SFI 29.1 Certified
LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate - SFI 29.1 Certified


$151.87 Buy It Now or Best Offer
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Seller Store best_parts21
(2450) 97.8%,

Location: Oyster Bay, New York
Ships to: US,
Item: 386867255655

Return shipping will be paid by:Seller
Returns Accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money back or replacement (buyer’s choice)
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best_parts21:best_parts21
Type:Flexplates
Manufacturer Warranty:None
Manufacturer Part Number:57534610
Material:Steel
Vintage Part:No
Universal Fitment:No
Country/Region of Manufacture:Unknown
Performance Part:No

LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate – SFI 29.1 Certified Description LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate Mfr. Part # 57534610 Condition New Brand best_parts21 Sold Each Details Info Works on all standard 6-bolt crankshaft 1997-2007 Gen III LS engines Allows direct bolt-on fitment of previous generation automatic transmissions Supports Non-LS 4L60 as well as popular older 3- and 4-speed automatics No modifications required to LS engine block or crankshaft New LS flexplate features dual GM torque converter patterns of 10.75” and 11.10” Flexplate is gold zinc plated, 4mm thick, and carries a SFI 29.1 certification Not compatible with 8-bolt crankshaft Gen IV LS engines Not for use with early Gen III LS 6.0L (1999-2000) due to extended crankshaft flange A Flexplate That Allows Direct Fitment of Older GM Automatics to Your Gen III LS Engine Unlike some engine swaps that require modifications to the transmission bellhousing, or even requiring the bellhousing to be cut off and a different one added, GM wisely retained the Gen 1 small block bellhousing bolt pattern for the Gen III (and Gen IV) LS V8. So, most any non-LS GM automatic, including the TH350, 700-R4, or even the venerable Powerglide will bolt directly to the engine block with no modifications, though it does so with one less bellhousing bolt. The swap issue lies inside the bellhousing with the flexplate and torque converter relationship and how they attach. To address this spacing issue in the most cost effective way possible we offer a custom LS flexplate with the LS 6-bolt crankshaft pattern and 168 tooth count. The center section is 4mm thick, which is .035-inch thicker than a stock LS flexplate and features a forged 1-piece ring gear to meet SFI 29.1 specifications. The LS flexplate is drilled for both early SBC torque converter bolt patterns (10.75″ which fits Powerglide, TH350, 200-4R, 700-R4, 4L60) and later LS converter pattern (11.06” 4L60E with LS engine). We even made sure our LS flexplate allows the use of the stock LS starter, which is one less swap part to worry about/buy. There are other flexplate solutions depending on the LS engine and transmission you are planning to use. Be sure to read our in The Toolbox to explore all options. To properly support the SBC-style torque converter found in these earlier transmissions, a will be needed. This sleeve engages the torque converter hub and the LS crankshaft, maintaining concentric support of the torque converter as it is mounted to the flexplate. If you’re in need of the LS flexplate bolts and the torque converter bolts to mount your new LS flexplate and attach your torque converter, you may wish to order our , which includes this flexplate, adapter sleeve, and installation hardware. Then you will have everything you need (except if needed) to easily adapt an early GM automatic to your LS engine. We used this very kit on our C10 pickup project with a Gen III 5.3 LS and TH350 transmission. You can see how smoothly everything went together in our overview. A Part That Will Save You Time And Frustration Fitting Your Classic GM Automatic Transmission In this day and age of “bolt-on” parts the term often leaves a lot to be desired. However, as long as you’re fitting a small block or big block Chevy “classic” transmission to a 6-bolt Gen III LS V8 (which includes 1997-2007 LS1, LS3, LS6, and LS7; 2005-2009 LS2; and Vortec truck engines including the 4.8/5.3/6.0 under RPO codes L33, L59, LM4, LM7, LQ4, LQ9, and LR4) this flexplate is the perfect solution. Besides the popular TH350 3-speed automatic and classic Powerglide 2-speed, this flexplate will also work with GM’s non-LS 4-speed overdrive transmissions like the 200-4R, 700-R4, and 4L60. Note that this is not a direct LS to TH400 adapter kit. While the popular Turbo 400 isn’t supported natively due to its larger 11.50” converter bolt pattern, if you wish to use a TH400 behind your LS you can simply swap your TH400 converter for a and everything will bolt right up then. The modern 4L80E uses the same 11.50” bolt pattern, but is not compatible with this flexplate, nor will this flexplate fit extended length crankshafts, such as early 6.0L applications, or 8-bolt crank Gen IV LS engines such as the LSA. If you’re looking to save money and reuse a classic GM small block or big block automatic transmission behind your Gen III LS swap, this flexplate is what your build needs. Installation Tips May not work with some 1999-2000 LQ4 6.0 LS engines, specifically ones that came with a 4L80E automatic as they require a flat flexplate due to the “tall” crank flange. Specs Material Type Steel Sold in Quantity Each Rear Main Seal Style 1-piece Engine Balance Internal Finish Gold Iridited Tooth Count 168 Outside Diameter 14.00 SFI Rating 29.1 Safety Rating SFI 29.1 MFG. Part # 57534610 Crankshaft Bolt Hole Count 6 Dual Pattern Yes Torque Converter Bolt Circle 10.75″ and 11.10″ Notes Will work with TH400 transmission if TH350 torque converter is used Shipping PolicyWe offer FREE shipping on all orders!We ship within Three business days of payment, usually sooner.We use a selection of shipping services such as UPS, FedEx, USPS etc.We only ship to the lower 48 states, no APO/FPO addresses or PO Boxes allowed.Local pickups and combined shipping options are not provided at this time. Return Policy You can return a product for up to 30 days from the date you purchased it.Any product you return must be in the same condition you received it and in the original packaging Payment Policy We accept payment by any of the following methods: PayPal, Credit cards, Google Pay FeedbackCustomer satisfaction is very important to us. If you have any problem with your order, please contact us and we will do our best to make you satisfied. Contact us If you have any queries, please contact us via eBay. We usually respond within 24 hours on weekdays. Please visit our eBay store to check out other items for sale! Thank you for shopping with @BestParts

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