Commin down with the GM virus

[HerMajestysMechanic]

So here it is.. just a few months into working on my girl's 91GM, the one she got from Nitroracer, and I start gettin these ideas... Things I would like to do to a GM.. customizin ideas. These ideas have lead to hankerins.. and hankerins have led to savings. In the spring or early summer, I'm going to join ThatOneGirl and you fella's, and get my own GM. I will already have the experience of doing what we've done to her's, and Im chock full of ideas for mine.

My first question is this...

Hypothetically, if I had access to the 351W out of an early 70's Mach I, would I be able to use the EFI setup from an F-250 on it? Computer and all? Also, if instead I had access to the aforemntioned F-250, could I use its entire block/EFI/headers, in an 87-91 GM?

I like the 302 alot, had one in my Bronco. But with the weight of these cars, and the inherent muscle of that 351, I think thats where I want to start my project. Whadday'all think?

The Admira

[Mr. Land Yacht]

I caught that GM Virus myself...the only cure is spending a lot of money on engine parts...LOL
I'm still not completely over it, it's still in my system...

[nitroracer]

The only problem with using the F-series intakes is the height, but if you put a cowl hood on....

A setup that should fit is a GT40 intake, lightning engines had them and I think marine engines used the gt40/351 lower intake.

I have a site saved where someone detailed their install of a EFI 351 into a towncar. Ill dig that up for ya.

[mrltd]

A 351W with EFI will not fit under the hood.(with any stock type manifold) INCLUDING the GT-40 intake.

The F250 system would require some tuning more than likely to work well on the 70's motor.

You are better off using a mustang EFI setup or custom setup than the truck.

[OVERKILL]

A 351W with EFI will not fit under the hood.(with any stock type manifold) INCLUDING the GT-40 intake.

The F250 system would require some tuning more than likely to work well on the 70's motor.

You are better off using a mustang EFI setup or custom setup than the truck.

Why would the 70's motor need tuning? There are LOTS of modified Mustangs running just fine with VERY different parts from what came on them.

I'd use an A9L so you have mass-air and then mod away!

And an EFI setup WILL fit under the stock hood, all you need is a carb intake with some injector bungs on it, a CHP elbow and you can run any aftermarket Mustang throttle body on it

[HerMajestysMechanic]

I'd use an A9L so you have mass-air and then mod away!

Whats an A9L. I'm still a little slow on the uptake with the acronyms.

And an EFI setup WILL fit under the stock hood, all you need is a carb intake with some injector bungs on it, a CHP elbow and you can run any aftermarket Mustang throttle body on it

Not sure I understand what yer describing here. basically not a true EFI like the GM's come with then?


The Admiral

[OVERKILL]

Whats an A9L. I'm still a little slow on the uptake with the acronyms.




Not sure I understand what yer describing here. basically not a true EFI like the GM's come with then?


The Admiral

An A9L is a Mass-Air Mustang ECM, the A9P is the same ECM basically, but for an Automatic car. If you can get an A9P, even better!

Basically, using the carb intake setup but using EFI on it, its a true EFI, IE, you have to install injectors and fuel rails, but you aren't using a traditional EFI intake, rather, you are making one

It'll clear the hood, that's the advantage I can think of. Otherwise, if you don't have issue with possibly having to run a cowel, you could find a 351 lower and run an Explorer upper or something.

[Archangel]

Whats an A9L. I'm still a little slow on the uptake with the acronyms.

It's an EFI computer series, mass air at that, preferred choice for customizing 5.0 engines.

Not sure I understand what yer describing here. basically not a true EFI like the GM's come with then?

Imagine an intake for a carburetor, in the end of the runners just before the heads you install injectors, and instead of the carb you bolt a huge 90* elbow that allows you to bolt a regular throttle body to it, and from then run the usual EFI-type piping, (CAI or whatever). It's a true EFI, just doesn't use an upper plenum.

[interceptor1985]

Pic?

[mrltd]

Read a little more there....

A 351W with EFI will not fit under the hood.(with any stock type manifold) INCLUDING the GT-40 intake.

Spyder probably will fit...But it costs an arm and a leg (749 bucks), and I doubt even used it's much less. Then you need to plumb the fuel lines, buy a throttle body, get injectors, all the wiring, sensors, ECU, MAF (if running MAF)... Not really cheap...

http://www.coasthigh.com/Fuel%20Injection/spyder.htm



A box type manifold might clear on a GT-40 or stock truck lower, but at the cost of low end tq/hp.

There is a reason you don't see many (if any) EFI 351's in the panthers...Too much work and too much money. I did see one person do it years ago in a towncar, he did a very nice all steel cowl hood for it. He sold it a few years back.

[nitroracer]

http://web.archive.org/web/20010509091125/shrapnel.gankish.net/87towncar/

[interceptor1985]

would he be able to use an intake from ...lets say edelbrock and that elbow since most aftermarket intakes have spots for injector bungs now? and after that just use used parts?

[OVERKILL]

would he be able to use an intake from ...lets say edelbrock and that elbow since most aftermarket intakes have spots for injector bungs now? and after that just use used parts?

Yepper!

[interceptor1985]

Sweet...Well lets tell him to do it then There Needs to be more 5.8 EFI car's around


Hmmm That Lincoln is pretty bad ass!....Idea's

[turbo2256b]

Could use a tunnel ram lower and mount a bread box on top like the steath ram its easy to do. Or go carb even easyer and cheeper. The early 351s had the good heads and 69 and 70 had much stronger blocks than the later ones. I pulled over 475 HP and 9000 RPM out the 351 w in my 69 Shelby Mustang and that was back in 71, 72, into 73 I believe. Then I bult the Aussy block 650 HP 351C for it.