Is There A Difference

[dirtybird]

Just wondering if there is a draw back in using a 350 trans with a ls motor. Also do 350 headers work on ls motors? If so any difference in performance?

[SLO_Z28]

No 4th gear, and the adapter for a TH350 to a LS engine negates the savings of the tranny. Gen1 small blocks have uneven exhaust ports as opposed to the evenly spaced ones of any LS block.

[JayR]

If you're trying to go modern on a tight budget, consider a mid-late 90s Vortec truck motor or an LT1. Your headers and a TH350 will work on the Vortec but if you're going a little modern, go with an overdrive and some fun gears and you'll never look back.

[deuce_454]

a 5.3 with tranny isnt that expensive as a take out package... get it with wiring and ecu