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post #1 of 19 (permalink) Old Feb 15th, 08, 09:18 AM Thread Starter
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Gabriel
 
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fuel injected cross ram?

Can a cross ram manifold (1st gen cross ram repro) be plummed to run fuel injection. Ideally it would be nice to have direct port injecting. I can't see how this could be done, but I have much less knowledge than you all.

Thanks.
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post #2 of 19 (permalink) Old Feb 15th, 08, 09:27 AM
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Fred
 
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Re: fuel injected cross ram?

Sure! I just took delivery of one of these yesterday. They make a dual quad version. Go for it!
http://www.retrotekspeed.com/product...ngle-quad.html

One owner 69 Camaro,(yep, bought it new)
RS SS Hugger Orange, L88, 4:10's tru-tack posi, ducted hood, Endura, spoilers.
TH400 (CX) with Coan 8" converter, GV-OD, 8 track still on console and best et 10.495, 128.79mph 1.428 60'
All with 1960's stuff. (except tires and converter)
+ MT Super Scavenger headers & 3" full exhaust with X pipe. 3700 lbs. with me in it.
1000cfm AED and HD Harold-Lunati SR, 725 lift with shaft rockers too.
http://epitomesrebuild.com/
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post #3 of 19 (permalink) Old Feb 15th, 08, 09:59 AM
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Cool Re: fuel injected cross ram?

With lots of imaginative engineering and some machining - you could install some of the injectors in the interior of the plenum (the front and rear pair of runners are not covered completly by the top plate), plumb the injectors and route the electrical through the rear of the lower casting (there are a few flat areas where buckhead hardware could be mounted) and then use two 'dummied' Holley carbs as the throttle plates (with the TPS hooked to the linkage or installed on the drivers side carb out of sight.) ...
But - hey, I'm a dreamer sometimes anyway

I've seen a few set-ups using small GM TBI units grafted to various manifolds and using various ECU's and sensor combo's - some looked quite nice and I was told worked very well.
I would try to stick to 'factory' type systems and sensors if you go this route as parts availablity and cost will be more reasonable in the long run.

Of course you could also mount a couple Holley 670 2bl TBI units on top ( no one will know once the air cleaner is installed), along with the proper sensors from their kit(s) and go from there.
I'd just buy two(2) complete kits if you go this route so you have some 'spares' to modify and use as you delevope the set-up.

Of course GM beat us all to a system like this in 1982 with the 'Cease-Fire' - oh, I'm sorry, it was really called the "Cross-Fire" system, used on early Corvettes and later Camaros.
These are actually decent systems for some uses and work quite well if you know how to tune and repair them. I had one on a boat for @5 years and it gave me no problems I couldn't handle.
It did have a habit of just not starting at times ...

You might want to check out - http://www.affordable-fuel-injection...Fuel+Injection

Hopefully others will chime in with more info for you.

1968 Convertible
Some trucks
Other V8 things - some of which float
Other V6 things - none of which float
Oh yeah, and 1 "Straight-Six" ...

If a man says something in the garage - and his wife can't hear him - is he still wrong !!!
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post #4 of 19 (permalink) Old Feb 15th, 08, 10:01 AM
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Tom
 
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Re: fuel injected cross ram?

There are many aftermarket fuel injection systems that offer direct port injection systems.

Holley, Edelbrock, accel even GM.

http://www.holley.com/division/Holley.asp#2
http://www.edelbrock.com/automotive_...pf_chevy.shtml
http://store.summitracing.com/partde...5&autoview=sku
http://www.sdparts.com/catalog/crate...JetEngine.aspx

69 Camaro -originally a LM1 car. 327, Edelbrock E-streets, hooker, DUI performance distributors, ultradyne cam, stewart, TRW etc. Vintage Air, AGR steering, Corbeau GTSII seats, 700R4 TPI transmission, 12-bolt w/Eaton 4.11:1

Last edited by TJS69; Feb 15th, 08 at 10:22 AM.
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post #5 of 19 (permalink) Old Feb 15th, 08, 12:14 PM
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Mark
 
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Re: fuel injected cross ram?

I'd think long and hard before going EFI over carbureated(SP?). Just about any intake manifold could be plumbed to run direct port injection but why? I have EFI in both my 4th gens and I can tell you tuning one is no walk in the park. To me a carb is so much simpler and easier to tune than EFI and no worries about electronics. IMO mechanical > electronics.
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post #6 of 19 (permalink) Old Feb 15th, 08, 02:53 PM Thread Starter
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Gabriel
 
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Re: fuel injected cross ram?

Well I've thaught long and hard, and that's why I am here to ask you all. My buddy suggested the idea, and now I havn't slept in 2 days thinking of how it's possible to make it work. I have seen how it's been done on a 84? corvette with carbs, and I would really like to do this rather than see another LS, LT intake that has become oh so common. I appreciate the comments and suggestions, and I don't mind criticism either.

Plus, the cross ram is freakin sweet!
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post #7 of 19 (permalink) Old Feb 15th, 08, 03:52 PM
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Re: fuel injected cross ram?

I like the idea, but the practical application of it is gonna be tough.

Finding a way to install 8 port injectors is the only thing that will really work. The pair of 2bbl tbi's idea is extremely attractive at first glance, but those manifolds have terrible wet flow at low rpm. The plenum is too big... fuel drops out of suspension. Heck, it's a race manifold and was never intended to see the south side of 5000 rpm. And 40 year old technology to boot.

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post #8 of 19 (permalink) Old Feb 15th, 08, 03:55 PM Thread Starter
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Gabriel
 
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Re: fuel injected cross ram?

OK, how about a manifold, plumbed with injectors, and a top plate with a fabbed staggered dual throttle body setup?
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post #9 of 19 (permalink) Old Feb 15th, 08, 03:57 PM
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Jim
 
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Re: fuel injected cross ram?

How bout an "electronified" hilborn?
8 tall stacks sticking thru the hood would be too cool!

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Jimragtop.com New website for my vert is coming together. Do ya like the slide show on the home page?
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post #10 of 19 (permalink) Old Feb 15th, 08, 04:03 PM Thread Starter
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Gabriel
 
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Re: fuel injected cross ram?

Trying for the classic cross-ram look. This is the closest I've seen so far. I just think the look with the fuel injection would be the cat's ***.
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post #11 of 19 (permalink) Old Feb 15th, 08, 04:39 PM
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Re: fuel injected cross ram?

I can't help but think of the mid 80's cross fire injection system. I actually have one sitting in the "I just might need this one day pile".

TTFN
Mat

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post #12 of 19 (permalink) Old Feb 15th, 08, 08:17 PM
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Re: fuel injected cross ram?

I'd stick the injectors in horizonally right in front of each port runners mouth on each sidewall and run the rails above the valve covers if possible??

Then run only one (1) centrally located bottom carb, 4-barrel butterfly plate just for ease of tune and linkage is all.

I think this is doable?

pdq67
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post #13 of 19 (permalink) Old Feb 18th, 08, 03:48 PM Thread Starter
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Gabriel
 
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Re: fuel injected cross ram?

Has anyone heard of this company. They might be onto what I'm looking for.

http://www.x-ram.com/

Maybe
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post #14 of 19 (permalink) Old Feb 20th, 08, 08:39 PM
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Re: fuel injected cross ram?

just thinking out loud....... just because it looks like a typical cross-ram on the outside doesn't mean you can't have runners or a smaller plenum on the inside! Epoxy is your friend if you know what you're doing. (ps. I do not know what I am doing)
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post #15 of 19 (permalink) Old Feb 20th, 08, 10:42 PM
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Re: fuel injected cross ram?

Here's the bottom of my new system. Just looks like a Holley from the top. And it's 1200cfm. There's lots of ways to get the job done. If you're a hotroder, make your own. I really related to the part about not sleeping for two days. That's what we hotrodders do!

One owner 69 Camaro,(yep, bought it new)
RS SS Hugger Orange, L88, 4:10's tru-tack posi, ducted hood, Endura, spoilers.
TH400 (CX) with Coan 8" converter, GV-OD, 8 track still on console and best et 10.495, 128.79mph 1.428 60'
All with 1960's stuff. (except tires and converter)
+ MT Super Scavenger headers & 3" full exhaust with X pipe. 3700 lbs. with me in it.
1000cfm AED and HD Harold-Lunati SR, 725 lift with shaft rockers too.
http://epitomesrebuild.com/
http://ss427.net/
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