BIG TIME!!!!!!!!! It's just one of those never dying threads from a truck board I frequent. I'm so sick of hearing how the "HEMI" just tows SO good. What do I know? My Duramax only has 590 ft lbs of torque at about idle so I guess a "HEMI" could out tow me with ease??? Yes, I'm joking again!!! I really couldn't help it and ALMOST mentioned this in the 502 Skylark thread to raise some hairs but I figured that was already a three alarm fire going there!! Ken
I guess this would be a good place to chime in my opinion and ask the question I've had rattling around in my rusty brain for awhile. First the opinion, leave FoMoCo engines in FoMoCo products, put anything in a chevy to make it go faster, If its pre LT1 GM leave it in the brand that it started with. That being said, once you hit the mid 90's everything is so corporated there is no such thing as a Chevy motor anymore, you may have a Chevy based LT1 or a Buick based V6 but the only thing that has any sort of brand ID is the Northstar Cadillac and its Olds cousins (4.0 Northstar Jr and 3.5 Shortstar V6). I would show no objections to putting an LT1 in a skylark (but for sake of calling it a Buick I'd get it out of a Roadmaster atleast). The LS1 actually looks dang close to a V8 version of a 3800 Series II V6, which is Buick based and preceeds the LS1 by a few years I might add. Besides what do you think comes in the new Buick SUV's, Gen III V8's. This finally leads me to my second thought, what Buick V8 ever came with EFI? The answer, none unless you count the LT1's and Gen III's. Since we don't exactly have factory systems to pluck what factory computer systems would work best on building a home grown EFI system instead of going DFI or Big Stuff? Personally I like Mass Air Flow systems to the exclusion of speed density so I'm stuck shelling out massive money for a Big Stuff 3 or Motec System or going for something factory like a L89 TPI system or Ford EECIV. Anyone put some thought into which set of computer and harness would be easiest to adapt to run a Buick V8 if you solve the manifold issues? Thanks,
Ok, these are good thought on adapting EFI from something else. Now, what about the manifold? Hmmm,..... I personally will try to adapt Ford EEC IV ('86-'96). The late 80's had mass air. I already have the computer and harness and sensors to do this. There is a company out there that uses an Edelbrock performer intake for the 5.0 and has a tunnel adapted to it that incorporates the throttle body and such. I think I will do the same. So, does anyone have a spare 4bbl intake for the 300 lying around? I bet even a 2bbl would work. Since, the opening would be used for air only. I will have to machine bosses into the intake runners for the injectors. Hmm,...the gears are turning,....is that smoke??,....look out I think she's gonna blow!!!!
MSD makes injector pocket that you either TIG weld or epoxy into place, they also make fuel rail components that take either TIG welding or brazing to assemble. I plan on using them for my sheetmetal intake for my 4.1 V6 so I'm sure you can take a 300 4bbl or 2bbl and drill the holes in the manifold and epoxy the injector pockets in place. As for 2bbl style throttle bodies I think you're a bit out of luck how ever they do make 4bbl ones that bolt right to squarebore carb pads, as far as Q-jet I don't know, you would simply have to find the right adapters for the various engine sensors and the proper IAC, TPS and other sensor to match you TB. The MAF sensor is just a matter of placing ducting so that once the air enters the MAF it can't go anywhere but into the manifold. I'd like to try this but I'm V6ing right now and until I get done with stuff like that and move onto EFIing a nailhead I'll just sit, watch, learn and help out as I can. Laterz,
Thanks, never knew anyone made the injector pockets. My life just got tons easier. On a side note, I see you are USAF. I just got out of active duty, I'm in the reserve now. Small world.
300 I like what walt said, and what Legendary said was absolutly exqusite. I still have a soft spot in my heart for the 300 and the thought of putting late model FI on one is facinating. So is putting it on a nail head. I did just that on a 258 Jeep straight 6. It ran like a bear. Throttle body injection would be easier to do than multi port. :grin: :grin:
Know what would be ultra cool? Dual throttle bodies on a Nailhead! :Brow: Trouble is that it may be a problem b/c wouldn't you need dual throttle position sensors?
Not if it's all being controlled by one FI module. I'm running a 2x4 intake with 2 Holley base plates and the TPS is on the front plate. This works out well as the four primaries open up about half way before the four secondarys open. All eight opening at once make the throttle too touchy.
Would that be worth the trouble though, I mean would you really pick enough fuel mileage/ hp to make it worth it? Besides, I don't think I'm ready for a "check engine" light on mine yet. :laugh:
Would it be worth it??? I'm sure that all depends but sometimes the "neat" factor just gets in there and the benefit per dollar just doesn't matter!! Has anyone looked into the Megasquirt fuel systems?? http://www.bgsoflex.com/megasquirt.html There is TONS of onfo out on these and Car Craft did a test a while back. Seems this would be a real good system for the scrounge/fabricator kind of person and it will work with TBI or port injection. Can also be used to control DIS spark!! I know it would take a lot of time to build a system but it could be done on the cheap using junkyard parts. Ken
There is a Car Craft article a few months ago about a dude with a 69 Camaro with a cross ram with dual Holley Projection 4bbl Throttle bodies. I think that would look cool on a stock dual quad manifold under the massive air cleaner. I agree that it would be simpler than going Multiport but it wouldn't work as well. Have fun with it this, because the days of the carb'd street car are numbered.
I don't see how the EPA could force people to convert their carbureted engines to fuel injected.......we are grandfathered in. I suppose they could do anything they want to, but the public outcry would be intense. I would also think cars registered as showcars would be exempt. :bglasses:
Well its not so much of the EPA legislating the change as it is the availability of EFI systems and the improvements that they make on effeciency and such. People will keep building them but I'd be willing to bet that more and more of the newly built street machines we see will be packing EFI instead of carbs
In my opinion EFI is the way to go. I just spent an entire afternoon tuning a 'Dauntless' 350 in a '71 Jeep. This is a Buick 350 of old design. It still has points and a 2bbl rochester. Between setting the points, dwell, and tuning the carb...I'd rather just have EFI and be done with it. Give me a check engine light that tells me when to plug the computer in and have it tell me what's wrong. Now as far as EFI goes, anyone can put a GM TBI unit in place of a carb. Heck, they even make 'kits' to put TBI on my '82 AMC 360. If they can put that on an AMC, then it can be done to just about anything.
It's the generation gap.......when you understand points and carbs well, they are not a problem. Same goes for EFI........if you don't understand it well it will frustrate you. Personally, I understand the old stuff really well and would take that over EFI anyday........the old is easier to work on. I only wish my daily drivers were points and carb. My Caravan is in need of a third fuel pump in 4 months.......sure wish it was on the side of the motor instead of on top of the tank. :bglasses:
300-FI-ect. I AM a scrounge Fabricator type person. I like that term. have not run across it before. :Brow: :Brow: :Brow: :Brow: I just hate all those wires that the efi has to have under the hood. :rant:
you would have some more wires for sure but it also could be done up neat and on the cheap too. It's one thing to tell someone you did an EFI for $400, and it's another thing when everything is neat and tucked away and it looks factory or better!! I don't have a car and don't see one in my hands for a good while but this gives me the chance to do quite a lot of thinking and reading for the day the budget and time is there!! It will happen some day.......................won't it???????? I know my entire theme will be "cheap and fast". Would live to have a pre 72 GS again but I'll most likely end up with a leaf spring Skylark or a Skyhawk. Figure a key thing to "fast cheap" will be light car! :3gears: Ken
300 Yall remind me of myself. I would spend all my money and efforts on "go" rather than "Show". Those kind of guys are the kind you have to watch, They will blow your doors off in a heartbeat. :Brow: The reason I said throttle body injection was because of all the wires with multi port. The m/p gave me a large bundle of wires on one side of the engine that was very dificult to deal with in a sightly manner. :rant: May be that I need to get some one to give me wire hiding lessons. p p
