JW Bellhousing bolts?
Thread Starter
Staging Lane
Joined: Aug 2019
Posts: 61
Likes: 6
From: Lumberton, NJ
JW Bellhousing bolts? I’m looking everywhere and getting nowhere
I have a 2005 LM7 gen 3 engine and a TH400 with a JW bell on it.. I have no bolts for it so I’m looking on amazon for some. Will M10x1.5 44mm work? Which is about 1.75” long ... I know the bell is thicker than stock th400 bell correct? If that’s too long what should I be ordering, 35mm or 40mm?? I’m trying to order ASAP to have by Saturday thanks in advance!
I have a 2005 LM7 gen 3 engine and a TH400 with a JW bell on it.. I have no bolts for it so I’m looking on amazon for some. Will M10x1.5 44mm work? Which is about 1.75” long ... I know the bell is thicker than stock th400 bell correct? If that’s too long what should I be ordering, 35mm or 40mm?? I’m trying to order ASAP to have by Saturday thanks in advance!
TECH Junkie
Joined: Dec 2012
Posts: 3,618
Likes: 1,328
From: Iowa
You haven't been looking everywhere. You've been waiting for a spoon fed answer on here or another forum.
I can tell you that a GM transmission designed and built in the 60's isn't going to be metric thread...
5/16-18 thread 1 3/8" long is STOCK
Measure the bell and get a bolt that is 1 3/8 + bell thickness
something flanged will work best to seal
I can tell you that a GM transmission designed and built in the 60's isn't going to be metric thread...
5/16-18 thread 1 3/8" long is STOCK
Measure the bell and get a bolt that is 1 3/8 + bell thickness
something flanged will work best to seal
Thread Starter
Staging Lane
Joined: Aug 2019
Posts: 61
Likes: 6
From: Lumberton, NJ
Ok so if I haven’t looked on the Facebook groups and forums , why do I keep coming up with m10x1.50 ..... I didn’t just pull it out of thin air. Instead of being an dixk, why don’t you just help like this forum is for?
Thread Starter
Staging Lane
Joined: Aug 2019
Posts: 61
Likes: 6
From: Lumberton, NJ
You haven't been looking everywhere. You've been waiting for a spoon fed answer on here or another forum.
I can tell you that a GM transmission designed and built in the 60's isn't going to be metric thread...
5/16-18 thread 1 3/8" long is STOCK
Measure the bell and get a bolt that is 1 3/8 + bell thickness
something flanged will work best to seal
I can tell you that a GM transmission designed and built in the 60's isn't going to be metric thread...
5/16-18 thread 1 3/8" long is STOCK
Measure the bell and get a bolt that is 1 3/8 + bell thickness
something flanged will work best to seal
TECH Junkie
Joined: Dec 2012
Posts: 3,618
Likes: 1,328
From: Iowa
HAHAHA
A. the bellhousing bolts onto the pump of the transmission. Figured that's what you were curious about
B. the bellhousing to block bolts...don't need anything special
C. Get the calipers out and measure the depth of hole on the block. Then measure the bell...then do some addition.
D. I didn't think facebook and/or forums were needed for these kinds of questions. If you can't figure out what bolts to use for the bellhousing to block...maybe put the wrenches down
A. the bellhousing bolts onto the pump of the transmission. Figured that's what you were curious about
B. the bellhousing to block bolts...don't need anything special
C. Get the calipers out and measure the depth of hole on the block. Then measure the bell...then do some addition.
D. I didn't think facebook and/or forums were needed for these kinds of questions. If you can't figure out what bolts to use for the bellhousing to block...maybe put the wrenches down
The depth of the hole in the block does not mean how much (depth) of it is tapped. Take a known bolt (longer than necessary) that screws into the block by hand (try a few holes, or all because they might not all be tapped to the same depth). Bolt original length minus amount that sticks out equals amount needed in block added to bellhousing thickness equal necessary bolt length. Whatever the thread of the test bolt (metric or USA) should be available locally to you. USA grade 8 or metric 10.9 grades. For something like that I would use a flanged head fastener.
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Staging Lane
Joined: Aug 2019
Posts: 61
Likes: 6
From: Lumberton, NJ
I don’t get why when I said “and a th400 with a JW bell on it” .... lol I mentioned the 2005 lm7 because that’s what I need the bellhousing mated to. I got 1.71” long Which is I think 44mm, is that too long ?
Caliper gauge will be your best friend here? I'm getting ready to be mating a glide to an LS and haven't gotten around to determining the exact length I'm needing. Guess I could make that my short project to go with some cold beer this evening..
Thread Starter
Staging Lane
Joined: Aug 2019
Posts: 61
Likes: 6
From: Lumberton, NJ
Sounds good man they should be in tomorrow morning so I’m gonna have a couple beers as well Saturday and get this trans in place so I can build my hotside piping and get this thing going lol
TECH Junkie
Joined: Jun 2008
Posts: 3,203
Likes: 1,391
From: Nitro Alley
Well for a few reasons, i guess...
1. You never specified the name or type of bolts being discussed (You could have said: "Transmission to Engine Mounting-Bolts").
2. When someone brings up a "Bolt-On" Transmission Bell-Housing and asks about unspecified bolts... We think: Okay, bolts for the "Bolt-On" Bell-Housing.
3. Most people would have any easy time finding bolts to attach the transmission to the engine... Compared to Transmission Pump-Bolts that are long enough for a "Bolt-On" Bell-Housing.
By the way... Did you also purchase extra-long Dowel-Pins to locate the Bell-Housing to the Engine?
If not... They are cheap, available from Summit-Racing, and worth the money and hassle!
TECH Junkie
Joined: Dec 2012
Posts: 3,618
Likes: 1,328
From: Iowa
Better give him a part number.
He wants that internet validation so he can be confident in his purchase cuz he's clearly not confident enough to do these things on his own.
OP: sorry if I came off "sideways" in the first couple posts.
He wants that internet validation so he can be confident in his purchase cuz he's clearly not confident enough to do these things on his own.
OP: sorry if I came off "sideways" in the first couple posts.