Who makes SFI spec parts for the 4L80?
03-29-2011, 09:30 PM
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Who makes SFI spec parts for the 4L80? Looking to run 10's, staying under 135mph, what sfi spec safety parts are available, I've only seen a flexplate?
03-30-2011, 10:39 PM
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sfi there is nothing they want you to have running in the 10s... sfi rules dont take effect till 9.99 then sfi balancer and flywheel... also you can run a catch can for the vent on an automatic... but thats just being safe ! 
