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I'm thinking I could use a prom for a 81 stock with 4 speed. I have converted this from an automatic, and have been told that the Prom needs to be changed due to the tranny swap. I have a hypertec, but would rather have a stock if I can get one. Reference ECM: does anyone know if I got a rebuilt...

been there , done that. hope this helps TRANSMISSION EXCHANGE PARTS LIST 1981 Corvette Automatic Removal, 4 Speed Manual Installed 1. Brake light switch 2. Back-up light switch, rod, bracket, shield , screws 3. Pedal pads 4. Clutch and Brake Pedals 5. 80-90 gear oil, 2 quarts (fill to...

synthetic? any oil that has a petroleum base is not a true synthetic, imho. I've been sold on a few different brands over the last 40 years and would continue using one of them if Amzoil were not available. The increased viscosity, protection, heat protection, failure rate, and long life sold...

parts list for '81 auto to muncie swap hope this helps some TRANSMISSION EXCHANGE PARTS LIST 1981 Corvette Automatic Removal, 4 Speed Manual Installed 1. Brake light switch 2. Back-up light switch, rod, bracket, shield , screws 3. Pedal pads 4. Clutch and Brake Pedals 5. 80-90 gear oil, 2...

Does anyone know if there is a source for a new 327 longblock. If I can find one at a decent price, I'm now toying with the idea of going non-emissions set-up with 300 HP and using a after market fuel injection such as MassFlow, or Eldebrocks efi. I had the 327-300 in both a '68 and a '64 and...

another possibility I had to push my vette out of the road :madtwice before I found the problem, that just might be yours also. there is a 3 wire connection under the distributor. one of the 3 wires is a male connection into the female which can, by engine torque movement, gravity, etc...fall...

caution on turning the crank I'v read that you don't want to turn the Vette's Crank. I believe the reason was that the journal surfaces were specially treated or hardened, and you would lose that . I believe I read that here in the Technical section on rebuilding a block. you might want to...

Holly rebuilts, Tpi, etc Man, appreciate the good come-back. I remember reading something Lars wrote about the rebuilt Q-Jets ..Holly, Eldebrock, auto store brands not being very good, but Jet had pretty good rebuilds. I respect his opinion. The locals that claim to be able to rebuild is...

Just considering many different options. Is Rochester out of business? I know that Eldebrock(?) did make a similar carb (1901?) but the Quadrajet folks made them stop. If QJ no longer mfgs, what s the problem w/letting someone else give it a go? One option I'm considering is going to...

thanks DarkShark, Craig Appreciate yo' good comebacks! regarding the OD, yea, I'm planning on either adding GearVendors Od or having Auto Gear to re-gear my Muncie so the 4th will be an OD ratio (less expensive...i think) I'd really think I should get in the 25-30 MPG with my 2:87 rear, OD...

I 'm thinking about converting to a 1995-'96 LT1 primarily for better gas mileage. While my engine (original) still runs ok, I'm tired of hoping for better gas mileage with the non-replaceable Quadrajet (15 to 17 mpg) that you cannot adjust because of its umbilical cord to the computer! If I...

I have tried to ascertain which rear end I have on my '81 without success. The numbers I'v found tells me nothing. they are "62580" and below that is "039534" . Since I bought this car used", the differential could possibly be anything from a 1980 to 1982...right? Because of some speedometer...

just got back from a 500 mile road trip to Helen, Ga, with my son (who is out on spring break for the College of Charleston) . I did work the curves in those mountains and ran 80+ mostly on I85, but the coolant stayed steady at the 160 mark. However, the engine oil temp. predictably, ran 180 -...

PROM number the correct PROM number for the 81, four speed application is 1225434. Can buy from Standard Blue Streak for about $80/ got the correct number from the local chevy dealer....of all places! yjsmlrd. ko, (that is , thanks, jim....when your fingers are on the right keys.)

kunneman since I put together that list, there are other considerations for the 81 when switching from the auto to the four speed. the ECM prom is different. You can get the PROM for the manual application from Standard Blue Streak (~~$80) or get the Hypertech chip.($140) The Needed Prom No...

like most clutches, they are from overseas, and likely both from China....for whatever thats worth. (There are many clutch “brand Names” but only about 5 or 6 mfgs..ZF Sachs, Exedy, Valeo, Perfection, Luk, Perfection most are IMPORTS ) just as important is the correct number flywheel, throwout...

LannyL81 that's interesting that you got it from Summit. Was it a regular PROM for your computer, or was it something like Hypertech's computer chips.? I was going to go w/ Hypertech until they said I'd have to use 93 octane instead of my current 87. Also, their literature says the chip only...

Does anyone know the code for the computer prom numbers which start w/519K? For instance, mine is 519K 8226 2044 06630. this is for a 1981 Vette w/an automatic transmission. I need the PROm numbering for a four speed, manual 1981 Corvette to order a new PROM after switching from a...

I think I've found a source for a needed PROM, but they need the numbers off of my old PROM....which I can not provide because.... I have switched from automatic to Manual transmission. That 's the reason I need a new prom cause the PROM for the car w./Automatic trans is different from the PROM...

jack, rat, jdp6000 Very noble of you to help, thanks! Jack, while I know a few owners who have succeeded in getting by w/bogus emission inspection, no station that I've talked to would even consider letting me slide or deviating. The fine is $25000 plus loss of business license; plus they have...