Flexplate – LS Series V8 to Chev TH350, 700R, 200R4

AUD$325.00 (Excl. Tax AUD$295.45)


This custom flex plate kit is designed to adapt the Gen III / LS series to the GM TH350, and 700R4 transmissions.

To Suit

  • Gen 111 LS series engine to TH350, 700R4 automatic transmission
Availability: Shipping delayed 6 to 8 weeks SKU: 712500A
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Description

Flexplate to suit LS Series V8 to Chev TH350, 700R, 200R4

Our Marks4WD custom flexplate to fit a TH350, 700R4 automatic transmission to the Gen 111 LS engine

The new style Gen III / LS series engines (4.8, 5.3, 5.7 LS1, 6.0, 6.2) all have the same crank stick out which is .400” closer to the block than the standard Gen 1 & Gen2 Chevy V8. The Gen III / LS series crank bolt pattern is different from any other GM crank as to the bolt pattern on the flex plate. Only Gen III / LS series flexplates fit these engines!!!

Since a Gen III / LS series, flexplate only fits a Gen III / LS series and the engine crank is recessed .400”. There are a few unique things about the torque converters that bolt to the flexplate. The spacing of the flexplate from the back of the block is the same as early GM blocks. The flexplate is dished out .400” to compensate for the crank. The differences come into play as to the bolt pattern of the torque converter to the flexplate and the snout length of the torque converter.

How do we adapt TH350, 700R4 to a Gen III / LS series engine? We offer a custom flexplate to fit a TH350, 700R4 and a crank spacer that compensates for the shorter engine crank.

 

Kit Includes

  • Flexplate
  • Crank spacer
  • Bolts

 

Notes

  • The flexplate may not work on all LS series engines.
  • The 6.0L engine with cast iron cylinder heads should only be used with the original transmission due to a different crankshaft stick-out length. It does not have a recessed crank.
  • The 4.8L engine coupled only to manual transmission in 1999-2003 does not have a recessed crank.
  • Does not suit 2014 & up Gen V engines (New LT1 V8 & 4.3 V6, 5.3, 6.2)
  • Does not suit LS7/LS9/LSA/LSX engines as they have an 8 bolt crank holding the flexplate to the engine

 

To Suit

  • Gen 111 LS series engine to TH350, 700R4 automatic transmission

 

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