64impalass
Member
Can anyone tell me any thing about bell house #3858403?:?
Bell house #3858403
- Thread starter 64impalass
- Start date
Common bellhousing for 64 to 67 283 and 327 with 10.5 clutch.
Bill
Bill
3858403 3840383
64-67 Pass. (283. 327 usually w/10.4" exc. HD Clutch)
65-67 Chevelle (283 exc. H D Clutch
67-69 All (302)
68 Pass. (307), Chevy (307), Chevelle (307 exc. H D clutch)
70-73 All (307)
64-69 Pass. w/reg. fuel
65-68 Chevelle (327 exc. H D Clutch)
67-68 Camaro (327)
69 Chevy, Chevelle, Camaro w/reg. fuel (327)
69 Pass. (350 w/ reg. fuel exc. H D clutch)
69 Chevy, Chevelle, Camaro, w/reg. fuel (350)
Clutch/Bellhousings 301
There are two types of bellhousing used from '55 to '82, cast iron and aluminum.
Casting No./Date Code
Cast iron housings follow engine code patterns:
B197
B = Feb./Month
19 = 19th day casting
7 = '57/Yr.
Some castings omit the year and some have no cast date code.
Aluminum housings follow aluminum Muncie M/T case coding:
Two 1/2" diameter circles divided in half. The Status Marker circle carries the latest blueprint change nunber on the top half and the Deviation Notice Letter if active, on the bottom (often both left balnk). The Date Marker circle carries the month (numeric) on top and the week (dots) on bottom (date should precede final assembly stamp).
Casting Numbers
3704922
'55-'56
Cast Iron
10.5" clutch
168 tooth flywheel
(1st. SBC bell housing)
3733365
Late '56-'59
Cast Iron
10.5" clutch
168 tooth flywheel
(2nd iron SBC bell housing, identical to 3704922)
3764591
'60 Only
Aluminum
10.5" clutch
168 tooth flywheel
(1st. SBC aluninum bell housing. Same size clutch fork boot as 37333365)
3779553
'61-'62
Aluminum
10.5" clutch
168 tooth flywheel
(Identical to 3764591 except with larger clutch fork opening)
3788421
'63 Only
Aluminum
10.5" clutch
153 tooth flywheel
(Identical to 3858403 except with smaller trans bearing hole)
3858403
'64-'72 SB 65 BB
Aluminum
10.5" clutch
153 tooth flywheel
(Identical to 3788421 except with a larger trans bearing hole)
3872444
Early '65-'66 BB
Aluminum
11" clutch
168 tooth flywheel
(Identical to 3788421 except with a larger trans bearing hole)
3899621
'67-'74 BB
'73-82 SB
Aluminum
11" clutch
168 tooth flywheel
(Identical to 3872444)
________
64-67 Pass. (283. 327 usually w/10.4" exc. HD Clutch)
65-67 Chevelle (283 exc. H D Clutch
67-69 All (302)
68 Pass. (307), Chevy (307), Chevelle (307 exc. H D clutch)
70-73 All (307)
64-69 Pass. w/reg. fuel
65-68 Chevelle (327 exc. H D Clutch)
67-68 Camaro (327)
69 Chevy, Chevelle, Camaro w/reg. fuel (327)
69 Pass. (350 w/ reg. fuel exc. H D clutch)
69 Chevy, Chevelle, Camaro, w/reg. fuel (350)
Clutch/Bellhousings 301
There are two types of bellhousing used from '55 to '82, cast iron and aluminum.
Casting No./Date Code
Cast iron housings follow engine code patterns:
B197
B = Feb./Month
19 = 19th day casting
7 = '57/Yr.
Some castings omit the year and some have no cast date code.
Aluminum housings follow aluminum Muncie M/T case coding:
Two 1/2" diameter circles divided in half. The Status Marker circle carries the latest blueprint change nunber on the top half and the Deviation Notice Letter if active, on the bottom (often both left balnk). The Date Marker circle carries the month (numeric) on top and the week (dots) on bottom (date should precede final assembly stamp).
Casting Numbers
3704922
'55-'56
Cast Iron
10.5" clutch
168 tooth flywheel
(1st. SBC bell housing)
3733365
Late '56-'59
Cast Iron
10.5" clutch
168 tooth flywheel
(2nd iron SBC bell housing, identical to 3704922)
3764591
'60 Only
Aluminum
10.5" clutch
168 tooth flywheel
(1st. SBC aluninum bell housing. Same size clutch fork boot as 37333365)
3779553
'61-'62
Aluminum
10.5" clutch
168 tooth flywheel
(Identical to 3764591 except with larger clutch fork opening)
3788421
'63 Only
Aluminum
10.5" clutch
153 tooth flywheel
(Identical to 3858403 except with smaller trans bearing hole)
3858403
'64-'72 SB 65 BB
Aluminum
10.5" clutch
153 tooth flywheel
(Identical to 3788421 except with a larger trans bearing hole)
3872444
Early '65-'66 BB
Aluminum
11" clutch
168 tooth flywheel
(Identical to 3788421 except with a larger trans bearing hole)
3899621
'67-'74 BB
'73-82 SB
Aluminum
11" clutch
168 tooth flywheel
(Identical to 3872444)
________
64impalass
Member
Thanks, guys I just got this 409 and I finding am something new about it every second.I still don't understand why you would put SB bell housing on BB. Could you tell me which bell houseing I need for a 814 QB 409? I. am new to this and thanks for you help.
Welcome to the site
Great group of guys here with lots of info.
Great group of guys here with lots of info.
For 63, the 3779553 aluminum bellhousing is correct and expensive. You can also use the 3779552 bellhousing which is identical except it is cast iron and cheaper.
For 64, the correct bellhousing is the 3842942 aluminum, but is hard to find.
You can use any chevy v-8 bellhousing as long as it allows the correct starter and clutch arm mounting and is matched to whichever flywheel,(153 tooth or 168 tooth), and clutch you are using.