Yip wire up your old one. The passenger side head has a plugged off port you can use. Will need to re-tap the hole for the L31 sensor thoughOk 10 weeks of after hours and weekend work and it now runs with the LS1 installed. Seems quite nice to drive although I haven`t yet gone very far, 1 question I hope someone on here can help with, I no longer have a temperature gauge working on the dash. The ecu temp sensor is working. Does the ecu have an output? or do I mount the old L31 temp sender and wire it up?
Thanks for the info on here with my conversion
95 rcsb, L33 5.3, hot cam, frost tune, 5spd, 4/6