8.1 vortec into 1979 k30

[AuroraGirl]

I was able use my psc power steering pump with the 2500hd alternator bracket. The 8.1 oem power steering pump uses three bolts on the face and an extra bracket in the back. I swapped the studs and bracket from the oem pump onto the psc no problems. Also got the Sanderson bb-8 headers test fitted with no problems except the driver side knock sensor is real close to the headers.

they are both the same pump, why wouldnt it work lol

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But your pump is improved, it appears they put a bearing in the snout? Or is that just a bushing

 

[bucket]

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Hey, what new flywheel did you get? If you bought the one that is supposedly specific to the 8.1, did you by chance compare it to your original 350's flywheel?

I ask because the GM part# for the 8.1 flywheel also shows as working with the neutral balance 396 and 427 engines... which in turn, should be the same application as a 350 with 2-piece rear seal.

 

[AuroraGirl]

Hey, what new flywheel did you get? If you bought the one that is supposedly specific to the 8.1, did you by chance compare it to your original 350's flywheel?

I ask because the GM part# for the 8.1 flywheel also shows as working with the neutral balance 396 and 427 engines... which in turn, should be the same application as a 350 with 2-piece rear seal.

350 with 2 piece is the pre 86 or so engines?

 

[AuroraGirl]

Hey, what new flywheel did you get? If you bought the one that is supposedly specific to the 8.1, did you by chance compare it to your original 350's flywheel?

I ask because the GM part# for the 8.1 flywheel also shows as working with the neutral balance 396 and 427 engines... which in turn, should be the same application as a 350 with 2-piece rear seal.

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on the gmt400 forum this is what a member there said so it sounds like it checks out

 

[bucket]

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on the gmt400 forum this is what a member there said so it sounds like it checks out

Lol, that was hard to read.

I just can't figure out what would be different, because they supposedly are. They only thing I can figure is that they are manufactured to a different tolerance for the crank bolts. But I don't want to buy a $200 flywheel if I already have a couple in stock that will work.

 

[Lu Blunt]

Chevrolet Performance 12582964 Chevrolet Performance Flywheels | Summit Racing

Free Shipping - Chevrolet Performance Flywheels with qualifying orders of $109. Shop Flywheels at Summit Racing.

www.summitracing.com

This is the flywheel I used with the 8.1. GM performance part number 12582964. Notes say “Also fits internally balanced Small and Big Block Chevy engines with 2-piece rear main seal.” Visually it’s identical to the flywheel that’s on the original 350sbc. Only difference is the 12582964 has dowl pins and metric threaded holes. I can get some pics in a day or two if you need

 

[bucket]

Chevrolet Performance 12582964 Chevrolet Performance Flywheels | Summit Racing

Free Shipping - Chevrolet Performance Flywheels with qualifying orders of $109. Shop Flywheels at Summit Racing.

www.summitracing.com

This is the flywheel I used with the 8.1. GM performance part number 12582964. Notes say “Also fits internally balanced Small and Big Block Chevy engines with 2-piece rear main seal.” Visually it’s identical to the flywheel that’s on the original 350sbc. Only difference is the 12582964 has dowl pins and metric threaded holes. I can get some pics in a day or two if you need

Awesome! That's what I needed to know! I'll use the good flywheel I already have, along with the new clutch kit that I have too. I'll just have to get the 8.1 specific pilot bearing.

 

[Lu Blunt]

The flywheel from the 350sbc

 

[Lu Blunt]

The gm performance 12582964 flywheel

 

[AuroraGirl]

I was able use my psc power steering pump with the 2500hd alternator bracket. The 8.1 oem power steering pump uses three bolts on the face and an extra bracket in the back. I swapped the studs and bracket from the oem pump onto the psc no problems. Also got the Sanderson bb-8 headers test fitted with no problems except the driver side knock sensor is real close to the headers.

I want to see that dipstick, I cant seem to find examples of your oem pump with the remote dipstick and filler

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most of these parts arent available, but they are related

@bucket does your 8.1 have the remote dipstick? Dont lose it they are evidently hard to come across

 

[AuroraGirl]

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[bucket]

I want to see that dipstick, I cant seem to find examples of your oem pump with the remote dipstick and filler

You must be registered for see images attach

most of these parts arent available, but they are related

@bucket does your 8.1 have the remote dipstick? Dont lose it they are evidently hard to come across

Mine is a medium duty setup. It has the alternator on the passenger side, with the AC and PS on the driver side. It's some kind of ZF pump with a cowl-mounted, clear reservoir. You can see the fluid level at all times.

 

[Lu Blunt]

I got the headers installed but I need to relocate drivers knock sensor. I’m trying to find a knock sensor with smaller threads so I can use a different hole on the side of the block. New spark plugs installed. I made brackets and mounted the oil cooler, power steering cooler and psc external reservoir. Also made hoses for the oil cooler. Pressed the 8.1 pulley onto the psc power steering pump. Oil changed with new filter. Filled trans and tcase with new gear oil. I will need to source a different oil fill tube or modify the current one inorder to clear the throttle cable. Installed cold case radiator but still need to get longer heater core hoses and new radiator hoses. Headlights, new grille and trim installed.

 

[Lu Blunt]

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[Lu Blunt]

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