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Old 03-25-2007, 11:58 AM
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Powerglide has to survive behind a 454

To you automatic transmission experts.I need help here.A friend found a '68 Nova with 6 cylinder and PG.Then we found a '98 Mk Vl 454.We are mixing both finds on a limited budget.My doubts are:

What are the weak points we should address as far as this PG coping with the BBC?

Being that importing parts to Brazil cost way too much in taxes to a blue collar worker,what would be the absolute must list?

* This will not be a 10 sec Quarter Mile car.The motor will be rebuilt stock.Just a cruiser with eventual sprints.

Thanks in advance. Paulo

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Old 03-26-2007, 11:04 AM
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Quote:
Originally Posted by paulo 1
To you automatic transmission experts.I need help here.A friend found a '68 Nova with 6 cylinder and PG.Then we found a '98 Mk Vl 454.We are mixing both finds on a limited budget.My doubts are:

What are the weak points we should address as far as this PG coping with the BBC?

Being that importing parts to Brazil cost way too much in taxes to a blue collar worker,what would be the absolute must list?

* This will not be a 10 sec Quarter Mile car.The motor will be rebuilt stock.Just a cruiser with eventual sprints.

Thanks in advance. Paulo
The glide is a strong transmission, we use them in drag cars, they come with a 1:82 or a 1:76 planetary, the 1:76 is the stronger of the two, but either will work.
To tell the difference you can pull out the small input shaft and measure the overall length to determine which you have. The 1:82 will measure 12 5/8 inches long; 1:76 is 12 7/8inches.
The clutches probably need updating, maybe a manual valve body to have more pressure, there are a lot of things you can do with a glide, but like you say it depends on the cost.
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Old 03-26-2007, 06:59 PM
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if it is an original 6 cyl glide , it will be a 1.82-1 first gear.

many things can be upgraded. We build complete race glides with no original GM parts

I would do a proper rebuild.

increase the clutch pack friction counts. this may require the inner drive hub to be replaced with a wider / deeper one to work with more frictions & steel plates.

TransGo still offers a kit for the glide for street use if you need automatic shifts.

You will need to maintain the TV linkage from the carb to the trans for proper shift points.
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Old 03-26-2007, 07:40 PM
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Thank you both for answering.I also read all the info at Burt Brown transmission's site.He also said that the really desirable first gear planetary set is the 1:76.He says that it may hold 600 HP.Frankly,my BBC will have about 300HP.It has that stock small port head,I think it is called peanut-port,and it runs out of steam at 4000 rpm.Besides this car will never see a sticky track and do race launches.Burt Brown sells a special strong input shaft for $ 175,the high gear hub in steel for $50 and a Performance Kit with Kevlar band for $300.What do you guys think about it?

Paulo
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Old 03-28-2007, 08:21 AM
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I would call Mike's Transmissions in Lancaster, California. This guy builds race type transmissions. He is very helfpfull to the DIYer too. I have one of his PG's in one of my cars. I broke the convertor and had to go through the trans, and he told me what parts I should get. Mine has stock clutches and a kevlar band. Call him, he has a website.
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Old 03-28-2007, 08:27 AM
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With 300 horse a good stock rebuild and a shift kit should do the trick.
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