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#1
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JW Bellhousing
Hi: Have any of you installed a JW Bell-housing on a TH400 and it pushed the tranny back 1/8" to 3/16".
I installed one with an IA2 block and JW bell housing and the cross member would not line up properly. Thanks |
#2
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is your mid plate the culprit? i have alot of adaptability in my gto, as far as front plates and mid plates, up to about .250 front to back. car initially was set up for standard 400 cased trans, did not notice any difference with the JW. you measured an overall length change between a stock cased and a jw equipped one?
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
#3
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No I don't have a mid plate on it. and No I haven't measured the difference between the stock case and the one with the JW bell housing. Duh on my part.. I just assumed it would be the same. I'll check that tonight. I was wondering if it will cause any issues? Aside from just lining up with the cross member bolt holes.
Thanks Charles |
#4
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should be same +-any tolerance differences. no washers in-between the JW and the front pump right? just the orings?
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
#5
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Yes just the o-rings. I didn't get a change to measure the tranny. Cut the bell housing off the other TH400 I have. Was looking online and it says 24-5/16"
Thanks for the help Charles Last edited by chuckies76ta; 02-23-2021 at 08:52 AM. |
#6
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If you find length differences. the pull out on the converter would be vastly different.
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#7
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Hi Rod: I ended up installing .060 washers between the convertor and flexplate. I remember with the stock bell housing that the washers weren't needed, so that tells me it moved back about 1/8", maybe a bit more. Can't remember the measurement I had.
Spacing for convertor is 1/8" to 3/16" right? With 1/8" being minimum distance. I have to get the car backup on the hoist to check this stuff out. No brakes on it right now, as were waiting on a Hydra boost unit. Thanks Charles |
#8
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So for you guys running the JW bellhousing what do you use for the remaining trans shield?
__________________
Skip Fix 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 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#9
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i run a blanket on my 64 as there is just too little clearance for an aluminum style, and on my tube car, i have the tci aluminum style, because it fits\ and is light.
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
#10
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TCI aluminum shield in a G-Body with a TH400
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#11
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I can not imagine they built the housing that way. I
would have to seperate the bell tighten pump without bell (seat pump into trans) . reinstall bell and see if feeler gauges would go in. Then look for what is not clearenced well. |
#12
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I checked the bell-housing to tranny pump with feeler gauge as you mentioned. All was good.
I think I may have had the engine sitting rear-ward a bit too much when I tightened the engine mount bolts, which cost me when tranny was installed. I will be checking. Thanks for the advise. Charles . reinstall bell and see if feeler gauges would go in. Then look for what is not clearenced well.[/QUOTE] |
#13
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So why run the bell and a shield vs the full shield like the CSR? Other than the cussing to get those top bolts!
__________________
Skip Fix 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 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#14
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Well first off, the JW bell housing reduces the chances of cracking the bell housing. And the top bolts are not hard to do with a long extension, and before installing the cross member.
I think it would be easier to just install partial shield over tranny and the J W. Just my thoughts Charles |
#15
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Thanks Charles. Those upper bolts are a pain on a full shield for sure. Most of the partials I've seen look bulky over the trans and not as tight as the "full".
__________________
Skip Fix 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 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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