how many tooth flexplate on a c-4?

LX XLR8R · 09-18-2001, 09:32 AM

basically is it as big as a AOD bellhousing or the size of a tremec/t-5??i want to know if i can use my headers still

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1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..
AIM=onesillynotch

Stang_ROTY · 09-18-2001, 09:45 AM

Are you asking for the amnt. of teeth in the flywheel or the size of the bellhousing? My SFI bellhousing is big and the exhaust did need to be modified. I am using a 154 tooth flywheel.

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Just need the sticker!

Red 1993 GT
1969 351 block w/393 stroker. Edlebrock Performer heads and Performer RPM EFI, FRPP 30lb injectors & Cartech fuel system. JMS chip & MSD ignition.
Dynamic Roller Myte C4, 8 pt cage, Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks

LX XLR8R · 09-18-2001, 10:33 AM

no SFI housiing needed..just whatever plain jan one it takes

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..
AIM=onesillynotch

blue00gt · 09-18-2001, 04:08 PM

I have a 'big bell' C4 in my '79 Pace Car (Ford also made a 'small bell' version, but I believe this was for the Mustang II) with the exhaust converted to '87-93 style with equal length 1-5/8" shorties and 2.5" H-pipe and catback. Everything fits great.
Can't say for sure about the full length headers, though.

Fostang · 09-18-2001, 08:37 PM

Should be fine. The flywheel has 157 teeth. 9 on the starter should also bolt on to the c4. You should be able to use your existing flywheel (aod) not (T-5). If you do get an older c4 flywheel get it rebalanced because later engines have 50 oz inbalance and the pre 81 engines use 28.2 oz inbalance.

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67'fastback-Edelbrock carb,intake,cam,valve springs.Rhode lifters, CompCam rocker arms, windage tray,cerama coated headers,dual flows with H-pipe, modded c-4,tci stall converter,perma cool electric fan,aluminum water pump,griffen aluminum radiator,accel 8.8 cable,wide cap distriburator,magnetic pick up,v-matic hurst shifter,edelbrock performer nitrous, carter electric fuel pump,ignitor coil,solid motor mounts,magna racing suspension,poly urathane bushings,under rider traction bars, comp. eng. s

09-19-2001, 10:19 AM

It depends if you have the small or big bellhousing. The small bell-housing C-4 uses the same 157 tooth config as the T-5. The big bell C-4 uses the same flywheel config as the AOD 164 tooth.

Be careful on what bolt spacing you have for the torque converter. The big bell usually has 11 7/16 (not exactly sure, but it is 11 and a fraction) inches. The small bell usually has the 10 1/2 bolt spacing (I believe you measure diagonally across the torque converter studs).

Your stock starter will work with either configuration as long as you stay consistent (164 tooth flywheel with big bell, 157 tooth with small bell) because where the starter mounts to the bellhousing is altered so the same starter will work.

You can use the stock AOD flexplate if you buy a torque converter with the bigger stud spacing for the torque converter. I bought a Coan for my buddy's car and it had the 10 1/2 inch bolt spacing, so we had to go buy a new flexplate. We thought we could just use the AOD flexplate, so be careful and specify to the torque converter manufacturer what you have.

Sorry for rambling on, I haven't been online in probably a couple of months. I hop I helped.

09-18-2001, 09:32 AM	#1
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	how many tooth flexplate on a c-4? basically is it as big as a AOD bellhousing or the size of a tremec/t-5??i want to know if i can use my headers still ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch

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09-18-2001, 09:45 AM	#2
Stang_ROTY Registered Member Join Date: Feb 2001 Location: Berkshire County - Massachusetts Posts: 735	Are you asking for the amnt. of teeth in the flywheel or the size of the bellhousing? My SFI bellhousing is big and the exhaust did need to be modified. I am using a 154 tooth flywheel. ------------------ Just need the sticker! Red 1993 GT 1969 351 block w/393 stroker. Edlebrock Performer heads and Performer RPM EFI, FRPP 30lb injectors & Cartech fuel system. JMS chip & MSD ignition. Dynamic Roller Myte C4, 8 pt cage, Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks

09-18-2001, 10:33 AM	#3
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	no SFI housiing needed..just whatever plain jan one it takes ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch

09-18-2001, 04:08 PM	#4
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	I have a 'big bell' C4 in my '79 Pace Car (Ford also made a 'small bell' version, but I believe this was for the Mustang II) with the exhaust converted to '87-93 style with equal length 1-5/8" shorties and 2.5" H-pipe and catback. Everything fits great. Can't say for sure about the full length headers, though.

09-18-2001, 08:37 PM	#5
Fostang Registered Member Join Date: Feb 2001 Location: Stockton, Ca Posts: 599	Should be fine. The flywheel has 157 teeth. 9 on the starter should also bolt on to the c4. You should be able to use your existing flywheel (aod) not (T-5). If you do get an older c4 flywheel get it rebalanced because later engines have 50 oz inbalance and the pre 81 engines use 28.2 oz inbalance. ------------------ 67'fastback-Edelbrock carb,intake,cam,valve springs.Rhode lifters, CompCam rocker arms, windage tray,cerama coated headers,dual flows with H-pipe, modded c-4,tci stall converter,perma cool electric fan,aluminum water pump,griffen aluminum radiator,accel 8.8 cable,wide cap distriburator,magnetic pick up,v-matic hurst shifter,edelbrock performer nitrous, carter electric fuel pump,ignitor coil,solid motor mounts,magna racing suspension,poly urathane bushings,under rider traction bars, comp. eng. s

09-19-2001, 10:19 AM	#6
88GT5.013.02 Guest Posts: n/a	It depends if you have the small or big bellhousing. The small bell-housing C-4 uses the same 157 tooth config as the T-5. The big bell C-4 uses the same flywheel config as the AOD 164 tooth. Be careful on what bolt spacing you have for the torque converter. The big bell usually has 11 7/16 (not exactly sure, but it is 11 and a fraction) inches. The small bell usually has the 10 1/2 bolt spacing (I believe you measure diagonally across the torque converter studs). Your stock starter will work with either configuration as long as you stay consistent (164 tooth flywheel with big bell, 157 tooth with small bell) because where the starter mounts to the bellhousing is altered so the same starter will work. You can use the stock AOD flexplate if you buy a torque converter with the bigger stud spacing for the torque converter. I bought a Coan for my buddy's car and it had the 10 1/2 inch bolt spacing, so we had to go buy a new flexplate. We thought we could just use the AOD flexplate, so be careful and specify to the torque converter manufacturer what you have. Sorry for rambling on, I haven't been online in probably a couple of months. I hop I helped.