Which flexplate should I use with c-4?

mikew88gt · 03-20-2003, 10:55 AM

I thought I knew what I needed but after buying a used flexplate I'm coming up with conflicting info/results. Here's where I am so far. I'm using my '88 5.0 and I want to install the C4 that I just built. According to one of my parts sources they're telling me that I need the 157 tooth 50 oz flexplate. That's what I thought I bought but after counting the teeth I found out that I bought the 164 tooth flexplate. When I hold this flexplate in the bellhousing of the C4 there isn't a whole lot of clearance but as far as I can tell it looks like the starter wants to mate up with the 164 tooth wheel. Can someone point me in the right direction? Thanks.

Capri306 · 03-21-2003, 02:24 AM

You need to get the B&M flexplate made specifically for this purpose. Using an older, smaller flexplate will not work, as you already know. The B&M is made for the post-'82 5.0L's and C4 autos. Can't remember the exact part number, but you should be able to find it online. I did. Think the URL is http://www.bmracing.com

BTW, the starter should work OK. I had to fudge around with starters for a while to get one that would work with my headers.

I'm pretty sure almost all small block Ford starters have the same gear tooth count on them. At least the bendix for them is all the same one!

mikew88gt · 03-21-2003, 08:18 AM

Thanks Capri306. I found it in Summit for $105. Figures it wouldn't be the cheap one.

03-20-2003, 10:55 AM	#1
mikew88gt Registered Member Join Date: Jul 1999 Location: New York State Posts: 242	Which flexplate should I use with c-4? I thought I knew what I needed but after buying a used flexplate I'm coming up with conflicting info/results. Here's where I am so far. I'm using my '88 5.0 and I want to install the C4 that I just built. According to one of my parts sources they're telling me that I need the 157 tooth 50 oz flexplate. That's what I thought I bought but after counting the teeth I found out that I bought the 164 tooth flexplate. When I hold this flexplate in the bellhousing of the C4 there isn't a whole lot of clearance but as far as I can tell it looks like the starter wants to mate up with the 164 tooth wheel. Can someone point me in the right direction? Thanks. __________________ Your basic carbed 302 with Edelbrock Performer heads, Performer RPM intake and 650 Speed Demon. My 1988 Mustang GT

03-21-2003, 02:24 AM	#2
Capri306 Moderator Join Date: Sep 1998 Location: Grand Rapids, Michigan, USA Posts: 1,001	You need to get the B&M flexplate made specifically for this purpose. Using an older, smaller flexplate will not work, as you already know. The B&M is made for the post-'82 5.0L's and C4 autos. Can't remember the exact part number, but you should be able to find it online. I did. Think the URL is http://www.bmracing.com BTW, the starter should work OK. I had to fudge around with starters for a while to get one that would work with my headers. I'm pretty sure almost all small block Ford starters have the same gear tooth count on them. At least the bendix for them is all the same one! __________________ Capri306, Moderator The Mustang Works Online 1979 Mercury Capri 1987 5.0L Mustang LX Notchback 1993 5.8L Eddie Bauer Bronco

03-21-2003, 08:18 AM	#3
mikew88gt Registered Member Join Date: Jul 1999 Location: New York State Posts: 242	Thanks Capri306. I found it in Summit for $105. Figures it wouldn't be the cheap one. __________________ Your basic carbed 302 with Edelbrock Performer heads, Performer RPM intake and 650 Speed Demon. My 1988 Mustang GT

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
flexplate interchange	69351w	Classic Mustangs	4	10-30-2003 02:21 AM
SFI flexplate from TMD on ebay	Mike_W	Windsor Power	0	02-16-2002 04:45 PM
how many teeth on a stock aod flexplate?	NotchJohnson	Windsor Power	11	12-08-2001 08:51 PM
flexplate ?'s	John	Windsor Power	2	10-14-2001 06:15 AM
flexplate.	BilLster	Windsor Power	0	10-13-2001 02:06 PM