Hi,

Wondering if you can swap (direct bolt on) fuel injection from a 1994 LT1 to a 80's vett engine. I know I would need the computer, intake, fuel rails and the fuel pump.

I would think it would bolt right up, but as there are some differences (heads, rear seal etc) thought I would ask....

Thanks in advance!

 

long or short of it? No and yes. do some more research. its been like a dying dog.

 

Thanks, I'm new here - would I be able to find the info in these forms? I have spent and hour searching but no luck on converting an 80's 5.7 carb to a 4th gen LT1 fuel injection - I might be able to purchase a knocking 5.7 4th gen cheap.

 

I have looked but haven't been able to find anything about transferring a 4th gen fuel injection system to 80's Vett block. Any help would be appreciated.
Thanks!

 

Dumb question: Why not just use the whole LT1 engine?

Mixing Gen I and Gen II parts is an exercise in "different for the sake of being different". Can you get a little more power? Maybe, but certainly not more than just using the entire LT1 engine.

The LT1 injection control system uses the Optispark system - you might be able to convert that to a Gen I block, or somehow or another get what the computer needs from a distributor so the LT1 PCM can do its thing. But, again the question: Why not just use the whole LT1 engine?

One thing for certain - it is far, far from a "direct bolt on".

You do understand the LT1 is "reverse flow cooling", right? That means coolant passages are different from Gen I engines to Gen II engines.

 

www.lt1intake.com

 

That's just the manifold, not the system. It uses the rest of a TPI system, not LT1.

 

Yes my understanding is the coolant cools the heads & intake first, then the block.

I think you missed this in the above post - the Lt1 is "knocking" that is why I can get it cheap.

It has over 200K and has been raced and juiced many many times.

My motor was rebuilt less than a year ago and is bored 50 over with SR Torquer heads ported & polished.....I can get the whole car with T56 tranny cheap. I was going to swap the 6 speed as well. I realize I will have to purchase a special clutch to mate the older block to the T56 due to the rear main seal. The good news is 88 and up Firebirds have the digital speed sensor so I don't have to convert the mechanical speedo like the 1987's and down.

The reason to switch to injection is Ontario has changed the e test laws - after 20 years cars were exempt. Not any more. Now any 1988 or later has to be tested forever!!!!!!!! Have you ever tried to get a done up 350 carb to pass on the TPI allowable numbers?
This is just a CASH GRAB. Many new car owners complained because there cars always passed. So now any car 5 years or older (used to be one year or older) have to be tested. This is a large % of Vehicles on the road. To supplement the revenue loss they have the older cars continue to be tested, which cars 20 years an older represent less than 1% of the vehicles on the road - the bastards are even considering having the older cars tested every year now.....instead of every other year.

 

This is definitely a great starting point. Thank you!
Problem is:

 

exactly. Not exactly a direct swap part.