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350 SB 4brl to fuel injection?


got muscle
01-21-2004, 05:19 AM
I have a 1976 impala that I recently did about $2000 worth of remodeling on a house for. The car has a fresh crate 350 engine, new competition 4brl carb, new edelbrock intake manifold, all new hoses, new AC system. My question is.... Can I convert my 4vrl carb to fuel injection? I live in Phx,AZ and I am concerned about the high fuel prices that i will encur with this setup. I cannot find very much usefull info about the 1976 Impala on the web so if anyone coulse send me in the right direction I would be very grateful. One more thing I'm in need of a few other minor parts such as the licence plate gas door, dash parts ect. Please email me or post a reply, I am new to this and looks as though this is my last resort. Thx.............

72 rs
01-25-2004, 01:28 PM
go to www.cfm-tech.com...........they have a setup thats nice.

67 caprice
05-20-2004, 06:20 AM
Go to
http://www.fuelairspark.com/
This is what I use for my 67 Caprice 540 Procharger.

lxndr
05-20-2004, 03:28 PM
Holley makes a TBI system for 350s. You could also try to find a stock TPI system and computer. A TPI system from a 86+ Corvette should work fine, you will just need to elongate the center holes on the manifold and wire in the computer. Thousands of people have done this so there are several books available on this topic! I picked up a TPI system for under $100 on ebay then found a computer and wiring harness at a junk yard for another $150.

curtis73
06-02-2004, 02:56 AM
You will save some fuel with EFI, but take an honest look at how much it costs to convert and get other's opinions at how much it actually saves them in fuel. You might find like I did (at least with my setups) that it might take you ten to twenty years to pay off that EFI. I had a stock 454 in a 1973 Impala. It got 12 mpgs on the highway if you were nice to it. I swapped the cam for a 212/218, used an Edelbrock intake, swapped to HEI, swapped to 049 heads, headers, and dual exhaust; all in a freshly rebuilt longblock. In effect I literally doubled my HP (from a stock 215 to now just over 400) and I went from 12 mpgs to 18. That's a full 50% increase in fuel economy for $2000 and a week of backyard labor. That includes parts, the longblock, an extra set of heads, gaskets, even mufflers... and I can sell the stock 60k-mile engine that came out of it and get about 30% of my money back. Just switching to EFI would have gained me neglegible HP, cost me more than $2000, and only netted about 2-3 mpgs. In some cases I actually lost mpgs switching to EFI.

If the point is switching to EFI, there are great ways to do it. If the point is saving money, take a really good look at other options first. Factory smog era wheezers waste fuel because in an attempt to make engines less polluting, they made them highly inefficient. They didn't have the technology to do it the "right" way so they just constricted them to the point that they didn't pollute as much. The engines are so low performance that they actually waste fuel making enough power to spin themselves. Tiny ports, crimped single exhaust, and weak intakes are to blame. I think you'll find that if you open it up with smog-legal parts it will reward you tenfold.

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