78 chevy

[Poorexcuse]

I have a 383 in a 78 chevy that I wanted to put EFI on it. I modified a LT1 intake manifold to work with it and got megasquirt to start the motor.

I bought a 1999 suburban with a bad motor and bought a core to rebuild, I am sitting with an extra vortec manifold. I like the looks of the vortex manifold better than my cobble job.

The 383 has 11:1 compression, dart iron eagle heads and an RV cam which I can't recall the specification on.

I have read the 411 ECU is a good ecu and it would allow me to put an over drive transmission in the pickup as well.

I am looking to see if anyone knows about any pitfall I might run into or if the LT1 intake is a lot better and I should just deal with the fact it isn't pretty.

Before I waste a lot more money and cutting stuff up, I thought to get some input.

Thanks

[fastacton]

The LT1 was a great engine and the manifold seems fairly well designed. The Vortec manifold has reputation of injector problems, but I'd not terribly familiar with it. If I were you, I'd be tempted to use a 0411 PCM along with the LT1 intake. Crank position sensor and distributor or cam sensor would be the big hurdles. Someone else here might have better insight on the intakes.

[Poorexcuse]

Thanks for the input.

I got the same advice from a guy that rebuilt my motor for the suburban i have. he also said he could get the megasquirt 2 with a better starting point to start to tune.

I still think the 0411 would be a good route if i want to put the overdrive in. So I will see about getting the wire harness and lay it in there and just wire the mega squirt 2 to it for the time being until I am ready for the transmission swap.


I need a distubutor at the very least to run the oil pump. The crank sensor on the vortec motor sounds like it it isn't the best choice. And that I would have to modify the harmonic balancer to use it.

I am still weeks away before I could play with it. so plenty of time to decide what is the best route.