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1981 Bonnie HEI


marturo's Avatar
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02-04-02, 11:23 PM   #1  
1981 Bonnie HEI

Hi to all
I would like to know if the HEI in my 81 Bonnie has the same body, as let's say an HEI for an 81 Chevy 305. If it has the same body then I can change the drive gear to the Pontiac gear. It is the 265 CI V8 with on board Computer, and I have found a non electric Carb that needs to work with the HEI W/Vac Advance. If it is the same body. When did GM start using the computer control WO/Vac advance HEIs in the Bonnies? I have rebuilt the original 2GV 14 times and now the throttle shaft is worn to where I have that ol shakey idle like many of the late great 4GV Quadrajets had before we changed to a Holley. I have about 6 like new Chevy HEIs so I am hoping it's the same body with a different drive gear. Thanks for the help, Marturo

 
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02-05-02, 03:38 AM   #2  
Joe_F
Marturo,

Not likely. The only way is to compare the breakdowns in a Delco component chart of your distributor to what the Chevy is. If the body part numbers are the same, they will interchange.

Fact is best bet is to get a rebuilt distributor for it.

As for taking out the computer, frankly zero benefit on this vehicle. Not a powerhouse to start out with. Keep all the original equipment and see where the actual problem is.

As I recall, this year Poncho 265 would have an electric choke or be of the E2ME/E2MC variety, not a 2GV. If there is a 2GV on there, it's likely wrong. 1978/1979 was the first real year for computers in California. In 1981, GM went across the board with their C-3 (Computer Command Control) system.

Those cores should be plentiful. Try www.junkyarddog.com for a good one, or the throttle shafts can be rebushed and renewed like new.

Why would you install a Holley to replace a perfectly good Rochester in the past? Dollars to donuts, a Rochester is every good as, if not better than any Holley.

Rochester didn't have to advertise as Nunzi Romano of Pontiac racing fame once stated, they sold 5 million carbs annually (back in the heyday).

Good luck.

 
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02-05-02, 10:03 PM   #3  
Just a change of venu.

Hi Joe_F
No problems with the onboard Computer. After 200,000 miles and all the rebuilds I have the worn out Rochester throtle shaft blues. I must have the 1980 version E2MC with 20,000 miles a friend gave me & it needs the 1980 HEI W/Vac advance to work together. No 2GV old habits die hard. You really don't like those Holleys do you? Well the way Holley is scaling back on what used to be a great Renew kit has me looking at the Brand new Rochester Qudrajet by Edelbrock problem is where is Standard Carberator rebuild kits there still here with the poor quality Blue Streak Advance Auto junk ing parts. It's a changing world of poor quality parts, we are forced to put into our great vintage Cars & Trucks. Just as the Boomers discover the 67 to 72 Cars & Trucks and start to put some of the best America put on the Hiway the after market parts turn to trash. Just a small example: My personal 1969 C/10, I ordered a $300.00 4 core Raidiator reproduction and in less than 1 year allmost all the satin black paint has peeled and blown away. A little vineger rinse over the Galvo would have allowed the paint to stick for a long time. I prepared it right and repainted it myself but why should the end user have to repaint a custom built part. I have quite a few HEIs stashed back and will do some # checking to find a fit for the Bonnie. To be fair there are folks like energy supension turning out Poly bushings parts and kits that allow us to get our heavy Metal to ride & track like there's no tomorow. I get the impression that Holley wants us all to go over to fuel injection so with that in mind I think this Old mechanic will just start putting the new Rochester Quadrajets on the Guys & Gals V-8s who want the thrill of a fine 4 BBL Carbarator. When you have a ride last over 200,000 miles and still run great compression and oil pressure it's hard to say good bye, but the 81 Bonnies plastic parts are going faster and faster this will be the last carb rebuild and the recyclers can have her and make at least 3 S-10s from her metal what little there is of it. I'm looking at a 1967 Bel-Aire and a 1969 Tempest both low milage and garage kept, to replace the 81 Bonnie. Keep um rolling, Marturo

 
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02-06-02, 05:32 AM   #4  
Joe_F
Nah Marturo...

Old Pontiacs run forever. If it's in good shape keep it. It will reward you with great service and it's a "rare" car. Not many of them left. I love those old Poncho big cars like that. They are sharp looking and reliable.

Nothing like an old Poncho V8, even if it is the little 265 brother in there .


If you had a 1980 version of the carburetor, it's an M2MC or M2ME not an E2MC. The first E means electronic. 1980 265 engines had vacuum advance as you know, not electronic carburetion.

As for good quality parts, you have to search them out. I do. They are out there. Some companies still make good stuff. I've been burned by Delco (OE) a couple of times, they are outsourcing too.

The "old time" guys like you and I (and I'm young..lol) that want to do it right or how we were taught (in my case by guys that are probably your age...but learned from their dads, etc) are a rarity today.

Not that many young guys my age putz with their cars or do things around the house like their dads or grandpas did.

I have seen it in my classmates. I'm one of the few guys (excepting a friend or two) that does his own work on the house or cars.

 
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