712500A : LS-Series Engine to TH350/700R/Flexplate Kit (#712500A)

LS-Series Engine to TH350/700R/Flexplate Kit..........

5/5 (2 Reviews)

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Advance Adapter
 
This custom flex plate kit is designed to adapt the Gen III / LS series to the GM TH350, and 700R4 transmissions. The kit includes a flexplate, 11mm flex plate bolts, crank spacer.
 
Gen III / LS Engines
 
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 old 350 V8. The Gen III / LS series crank bolt pattern is different than any other GM crank as to the bolt pattern on the [...]

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$155.22

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712500A : LS-Series Engine to TH350/700R/Flexplate Kit

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Advance Adapter
 
This custom flex plate kit is designed to adapt the Gen III / LS series to the GM TH350, and 700R4 transmissions. The kit includes a flexplate, 11mm flex plate bolts, crank spacer.
 
Gen III / LS Engines
 
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 old 350 V8. The Gen III / LS series crank bolt pattern is different than 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.
Note: This Advance Adapter kit does not work with a 6.0 engine with cast-iron cylinder heads.
 
  •  PN717514 collector rings and gaskets for Gen III engines are sold separately.
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Reviews (+/-)

Reviews

  5/5 by Rodney Crane, from Ulysses ks Sep 04, 2012

awesome products

These flexplate adapters worked awesome and were cheaper than any other place I looked on the net. Thanks for making my swap easier.

204 of 437 people found the following review helpful. Did you find this review helpful? Yes   |   No

  5/5 by Jerry Nevil, from Lewisville,Texas Sep 19, 2011

5.3 to th350

everything worked out great in the end . We had to space the tranny 3/32 to get the torque converter ot of the pump on the th350,then the fly wheel was about 1/4 " away from the flywheel .Itt bottomed out on the crank shaft adapter . we machined down the adapter so the torque conv would just touch the flywheel . We do some fabrication in house so it ended up working great.Not as good as I expected but I will use you all again.

225 of 513 people found the following review helpful. Did you find this review helpful? Yes   |   No