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  #1  
Old 02-26-2023, 09:14 AM
wakesupremo wakesupremo is offline
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Default Torque converter to flex plate bolts
I am having a problem fitting new ARP bolts, Does it matter whether they go in from between flex plate and engine block with the nut on the transmission side or with the bolt head the transmission side and the nut between flex plate and engine block?

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Old 02-26-2023, 09:41 AM
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Half-Inch Stud Half-Inch Stud is offline
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Naw, but there is forthought to put the nut on the softer-metal side, and the SHOULDERED bolt on the hard metal FLEXPLATE side.

Space the converter off the Front pump!, Grind the bolt length to ~ 2 threads after tightened.

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Old 02-26-2023, 07:09 PM
Schurkey Schurkey is offline
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Am I missing something? Shouldn't a Pontiac torque converter have welded-on spacers that are drilled and tapped? No nuts involved.

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Old 02-26-2023, 07:37 PM
Goatracer1 Goatracer1 is offline
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Must be after market hi-po converter?

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Old 02-26-2023, 09:51 PM
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Half-Inch Stud Half-Inch Stud is offline
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Nuts and bolts is Surely not an original TH400 converter.

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Old 02-26-2023, 10:10 PM
Schurkey Schurkey is offline
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Quote:
Originally Posted by Half-Inch Stud View Post
Nuts and bolts is Surely not an original TH400 converter.
Or an original CHEVY converter, which doesn't clear the balance weight(s) on the flexplate.

Am I wrong? Chevys used nut-and-bolt fasteners, Pontiac, Olds, Buick, Cadillac used bolts into drilled-tapped standoffs welded to the converter.

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Old 02-27-2023, 02:59 AM
wakesupremo wakesupremo is offline
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Thanks once again for the replys. Its a TCI Saturday night special. Never had any issues and have been using it for many many years. I don't recall ever having a converter with captive nuts or welded on threads.

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Old 02-27-2023, 09:04 AM
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Half-Inch Stud Half-Inch Stud is offline
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All GM stock muscle 12" & 13" seemed to have welded nuts. 3 or 6.

The tiny 9", 10", GMs may have used loose nut& bolt.

11" cores?

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Old 02-27-2023, 12:05 PM
Goatracer1 Goatracer1 is offline
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My after market 9" converter has welded on nut. Went to put in original bolts and found converter was metric.

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Old 02-27-2023, 05:05 PM
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Skip Fix Skip Fix is offline
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Most all of mine use nuts and bolts. Grade 8s.

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1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
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Old 02-28-2023, 11:42 AM
1969GiPper 1969GiPper is offline
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Quote:
Originally Posted by Half-Inch Stud View Post
All GM stock muscle 12" & 13" seemed to have welded nuts. 3 or 6.

The tiny 9", 10", GMs may have used loose nut& bolt.

11" cores?
I have a GM converter that has 6-welded on lugs with standard threads. Has GM part number 8625982 stenciled on it. It’s often referred to as the Chevy “L88” converter. Never saw a factory installed 6-lug converter in a Pontiac.

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