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I ran into this article about fuel injecting a slant 6 Mopar and I thought it might be useful for stovebolting: efi for slant
It uses a GM 3.8L batch fired EFI setup and uses GM parts for the most part. It looks like it would work great on a 235 or 261. I don't think the siamese ports will be a problem if you set the injectors up right.

A fuel injection conversion is interesting.Do you think it would really be cost effective on such a breathing limited engine like a 235?Don't think there would be any real improvement as the engines are not emissions regulated, leaves more room for conventional carburation jetting. At wide open throttle, injection offers very little over a correctly sorted carburetor.The late Japenese superbikes make fantastic HP with carbs and superior engine designs although they may now use FI to meet emissions.If you have the time and the parts , do it and then we will all know if it works.

Yes, it is true that fuel injection doesn't do much for max power. I think it would do a lot for a 235 with a cam. Fuel injection does a good job of regulating idle and part- throttle drivability. If you put a wild cam in the 235 you would get better breathing and the fuel injection would take some of the lumpies out of the cam.

Every time I look at the TBI setup in my '86 Fiero 2.5 four cylinder, I wonder how easy it would be to retrofit this to a 216...would need to install an o2 sensor, coolant temp sensor and elec. fuel pump, but that'd be about it.

I believe a stock TBI setup like that flows about 390 cfm, and all the works could be had off a junk 2.5 GM car for probably about nothing.

Has anyone actually done this ? Wouldn't exactly be a fire-breathing setup, but those TBI's are pretty reliable.

I think the trick to adapting fuel injections from a donor vehicle is to pick one from a car with a similar engine displacement and same number of cylinders. That way the fuel map is close and the injectors fire in the right sequence. I don't think a four cylinder fuel injection would work well on a six cylinder engine. The Buick 3.8L is 231 cid, very close to the 235.

Try GM ECM at diy-efi.org You can adapt just about any system to just about any engine, with enough reprogramming. I'm starting work on a TBI system for a 250 that's going to go in my 1954 GMC Panel, I have a computer for a 4.3L V6 that will drive two one-barrel TBI units on a two-carb manifold. Once I make some progress, I'll post more info (that may be a while...).

I am putting a throttle body system from Affordable Fuel Injection on my 292. Do not have it running yet so I can't talk about problems. It uses a two barrel TB from 4.3L. System came with rebuilt TB, custom computer, wiring harness, all sensors, and modified distributor - for about $1250. Here is the site www.affordable-efi.com

The thing I don't like about all these swaps / kits is that they aren't very open that I can tell. You are stuck with the algorithms that they design for emmissions and the sensors that they use without regard to the compatibility of putting them on an old stovebolt. I have bought a few books on TBI and TPI systems that cover theory and sensor types as well as where to get all this stuff (donor vehicles, supply houses, etc.) I am going to use a Motorola DSP based controller board that is commercially available and make a home brewed system for my 292. The first few minutes of running might be dicey . . . better have my stuff together!

8-2bbl 97s on a 292 hemi yea idle on all 8 run up to half throttle on 4 open de 4 outsides oops dinosaurs talk

i likes this stuff simple digital fi systems and looks real adapitable program from yer lap top zoom zoom zooom zzzzzzzzzzzzzzzzzzz

Looking at their index page, it says: Looks interesting, though....

I agree with Ken, that the systems on the market don't allow much input from the end user as to what components to mix and match. But they do have their place, for me I can justify using one because it should run out of the box, without all the trial & error on my part. This is important on my daily driver. When I have the money and time, I want to create a MPI system that also controls a turbo. The siamesed intake ports really seem to be the stopping point. So what if you use one of the 12 port aluminum heads(big money). Not a crossflow-I want to keep the intake & exhaust on the same side for the turbo. Could also use stuff like a crank trigger & distributorless ignition.

were would you find a 12 port head {cross flow
or not} I would love to have one

my idea is to use the injecter system of a hipower
chevy Camaro or firbird v6 and then you can buy
a programer to ajust performenc

Most of the 12 port heads today were made by cutting the 4th cylinder off a pair of SBC heads and welding them together and re-drilling the block for the new bolt pattern. Not easy at all.

Mike Kirby at www.sisellsautomotive.com sells them. You can also look around inliners site for other sources. I think most 12port heads are for late inline sixes. Also Santucci's manual has lots of pictures of all styles of heads.

what about the injector systym off a
new chevy vortech six along whith a twelve port
head and high compression pistons on a 250
500 hp??
and than stick that in my 53 I think that iswhat you would call a dream