These posts and links keep making me feel like I shouldn't have an LT1 build next on the adjenda for my '96 Impala... but a FI455! :Comp:
The tank itself is essentially unmodified. I have to keep the tank at least 1/3 full too. Eventually I'm going for a real tank from rock valley. For now, I just replace the fuel pumps every so often and carry a spare. Just a few sips of air and the fuel pump starts whining and moaning They don't like to pump air! Actually I'm almost to 3 years on my current pump, ever since I eliminated the inlet filter- it was doing more harm than good. -Bob C.
ever think on using a surge tank? neat idea. reminds me of a "day tank" here at work. http://www.sdsefi.com/techsurge.htm -nate
Would be a good idea. It was my intention, however, to get a "real" tank that was designed for FI. -Bob Cunningham
yup I designed the first port injected 455 setup, it's the setup I sold to carcrazy, works very good for what it is, I ran 10.50's with it easily. That is a great deal he is giving someone. easy to learn and program. Jim
Did you install a new bung? I managed to cram a fuel pump through the stock hole and attach it to the fuel line after it is in the tank. It's and S.O.B. to get in there for sure. I cut a bung and sump out of an old tank when I did my Olds. I'm not sure if it's working right as it recently ran out of gas at 1/4 tank on the gauge. I still have to figure out if it's the gauge or the fuel pump running out of fuel.
Nope, I just use an external pump. Far from ideal, but does the trick okay until I get the "right" setup. www.rockvalleyantiqueautoparts.com -BC
Cheap? FI ain't cheap. You certainly will probably never get a return on your investment. A quick calculation shows a payback period of about 225,000 miles based on $2.50 per gallon, and 15 MPG vs. 13 MPG. Saving money is NOT a reason to convert to FI! -Bob Cunningham
Bob , I think the fuel mileage would increase by more the 2 mpg and the power should also increase. There is also the fact that FI runs better when cold and you will save fuel by not having to let the car warm up as long to be able to drive. Don't forget it will also release less pollution into the environment. The resale price of your vehicle should increase unless you try to sell to one of those nuts that has to have everything all original. Mike
I built a Buick, added a 200-4r, stage 2 heads, and now fuel injection. Believe me, just saying it's spendy doesn't mean I hope to get my money back. I think it more of an exercise in engineering or personal challenge. Just thinking something as innocuous as a gas tank that fits a Chevy would be cheaper.
big block EFI If you scroll down to the "high tech for old iron" forum and click on the thread listed as "my megasquirt EFI" you will see several pages of info on an EFI conversion on a 455 in an 86' Regal. It is definately worth a look.
you can use a 91-96 caprice tank in place its baffled will bolt right up in a lark can use the lt1 pump too id say
Another option to consider.... Another option for half of that $3750.00 (but more than the megasquirt) would be the combination of an SPX intake (machined by them or you) and a Holley 1000 or 2000 cfm stand alone MPFI setup (about 1100.00). This will also allow those 'nuts' that need to keep everything original to still have all the old parts in a box, waiting to go back on... This is the route I am going to use. I don't have the time for the Megasquirt, and I am not spending the money for the full SPX system. My .02.
Are you talking about this holley kit? http://store.summitracing.com/defau...151+400178+4294871728+4294858234&autoview=sku It looks like it doesn't come with injectors or the computer or wiring harness. I'm working up an EFI system myself very simular to the person that has already put the megasquirt on a 455. I already have the fuel rails, injectors, AN fittings, fuel regulator, throttle body and a megasquirt. I should be getting a SPX intake in the next week or two and then I can start fabricating. I'm already running a megasquirt unit on my turbocharged V6 camaro so I've been through the learning curve. I'm also modifying a stock points distributor w/ a magnetic pick-up so I can control spark as well. And it's definitely a cheaper route. Other than the SPX intake all the AN fittings were the most expensive part...but AN fittings are definitely not required, they just look nice :Brow:
No- that isnt it- you have to go to holley- they have the kit, the only thing you need is injectors & intake- it used to be available at Summit, but they don't carry the complete kit anymore...
the trunk floor needs to be clearanced for the sending unit with a caprice tank. however the mounting rails on the bottom of the trunk are the same width as the molded in ones on the caprice tank and the caprice tank is just s smidge longer front to rear of the old tank but ok with a new tank strap. -nate
