Thinking if it is possible might make the 4th gen dash swap plug and play?
Is that a no or didnt i search good enough? 
Supreme Member
the LT1 computer will be expecting a signal from an optispark distributor. you wont have one on the tpi motor. wont work.
Thanks, so i assume you cannot run an optispark distributor on a Gen 1 small block? What is the actual problem? If you ran an LT1 intake could you run the LT1 distributor?
I knw you can modify an LT1 intake to accept a TPI distributor so if you just didnt modify the distributor hole could you still use the LT1 distributor?
I knw you can modify an LT1 intake to accept a TPI distributor so if you just didnt modify the distributor hole could you still use the LT1 distributor?
Senior Member
Quote:
I knw you can modify an LT1 intake to accept a TPI distributor so if you just didnt modify the distributor hole could you still use the LT1 distributor?
lt1 "Distributor" (Optispark) is a gen-II proprietary unit that mounts to the front of the block below the water pump.Originally Posted by Ricco
Thanks, so i assume you cannot run an optispark distributor on a Gen 1 small block? What is the actual problem? If you ran an LT1 intake could you run the LT1 distributor?I knw you can modify an LT1 intake to accept a TPI distributor so if you just didnt modify the distributor hole could you still use the LT1 distributor?
Senior Member
Quote:
I knw you can modify an LT1 intake to accept a TPI distributor so if you just didnt modify the distributor hole could you still use the LT1 distributor?
An Optispark distributor is not even located on the intake manifold, so NO, you cant just change intakes. Originally Posted by Ricco
Thanks, so i assume you cannot run an optispark distributor on a Gen 1 small block? What is the actual problem? If you ran an LT1 intake could you run the LT1 distributor?I knw you can modify an LT1 intake to accept a TPI distributor so if you just didnt modify the distributor hole could you still use the LT1 distributor?
The Opti distributor is located directly on the front end of the camshaft with the water pump located just above.
So whats it do?
Supreme Member
Quote:
its a flat, crab looking distributur. it does the same thing the tpi distributor does, but its located on the front of the LT1 engine. it also has different signals going to and from the optispark in terms of computer control.Originally Posted by Ricco
So whats it do? 
Supreme Member
Go to the top of the page and look under the sticky OBDII We used an LS series motor harness and ECU Far superior to the LT1 era
Quote:
Yeah i saw that but that was using an LS setup on a TPI.. I recently picked up a 97 LT1 dash and am trying to figure out the easiest way to do the wiring.. Maybe i could go with an LT1 motor and just use all of the 4th Gen wiring.. would prob be easier than splicing the 4th Gen dash into the 3rd Gen harnesses...Originally Posted by Mkos1980
Go to the top of the page and look under the sticky OBDII We used an LS series motor harness and ECU Far superior to the LT1 era Do they make harnesses to run an LT1 motor/Dash with an LS series ECU?
Supreme Member
I believe its in the works. Hmm It may have already been done. I think i may have seen something like that on CZ28.
you can put an LT1 harness & ECM on a gen1 motor.
there is some work involved with it.
you will need to modify your distributor which would probably be the hardest part.
http://img.villagephotos.com/p/2004-...1_HEI_02_w.jpg
http://img.villagephotos.com/p/2004-...1_HEI_01_w.jpg
speartech may sell a modified distributor.
there is some work involved with it.
you will need to modify your distributor which would probably be the hardest part.
http://img.villagephotos.com/p/2004-...1_HEI_02_w.jpg
http://img.villagephotos.com/p/2004-...1_HEI_01_w.jpg
speartech may sell a modified distributor.