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  '64 1/2 to '73 -- The Classic Mustang
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Author Topic:   C4 Question
67mike
Gearhead

Posts: 165
From: Arab,AL
Registered: Mar 2001

posted 05-08-2001 09:52 AM     Click Here to See the Profile for 67mike   Click Here to Email 67mike     Edit/Delete Message   Reply w/Quote
What can anyone tell me about the early c4's?
I have one ( abut 66 ) that seems to be in good shape.Friend says they are weaker than the newer ones.Would it be alright for "light" racing? thanks mike

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JAAZZY
Gearhead

Posts: 776
From: Bay Area, CA
Registered: Apr 2001

posted 05-08-2001 11:41 AM     Click Here to See the Profile for JAAZZY     Edit/Delete Message   Reply w/Quote
I don't know details but I know that the c4 in my 66 didn't last. I needed it rebuilt about every 6 months. Offcourse now there is so much aftermarket support that parts are available that allow them to handle huge amounts of horsepower.

quote:
Originally posted by 67mike:
What can anyone tell me about the early c4's?
I have one ( abut 66 ) that seems to be in good shape.Friend says they are weaker than the newer ones.Would it be alright for "light" racing? thanks mike

------------------
65 Stang - TFS SH Stage III Heads, Nash 5 speed, Fuel Injection, etc...
2001 - Z06

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66351stang
Gearhead

Posts: 711
From: sayville,newyork
Registered: Jul 2000

posted 05-08-2001 08:55 PM     Click Here to See the Profile for 66351stang   Click Here to Email 66351stang     Edit/Delete Message   Reply w/Quote
hey mike, i have a 66 c-4 in my 66 coupe with a 351 svo,slightly worked, i have extra clutch and plate, kevlar clutches, and i larger input shaft, i have no problems with it. infact i have never blown up a modified c-4 yet.. no crazy horsepower, maybe around 350-400hp..

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richard bohm
Gearhead

Posts: 373
From: tucson,az-luray,va
Registered: May 2001

posted 05-08-2001 11:43 PM     Click Here to See the Profile for richard bohm   Click Here to Email richard bohm     Edit/Delete Message   Reply w/Quote
properly built a C4 can withstand up to 600 hp! when a C4 goes away most shops that rebuild them fail to replace the converter and the garbage that is left behind gums up the new works and you have to rebuild it again and again.... use a B&M rebuild kit, a B&M holeshot converter and you should have no problems.

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67mike
Gearhead

Posts: 165
From: Arab,AL
Registered: Mar 2001

posted 05-09-2001 05:37 PM     Click Here to See the Profile for 67mike   Click Here to Email 67mike     Edit/Delete Message   Reply w/Quote
Hey Guy's I appreciate the reply's. That makes me feel alot better. The tranny I have came out of a 66 galaxie and is going in my 67 MGB. I Have 66 289 heads, which brings me to another question, do I need rail rockers or non-rail for these heads. I also have a 67 mustang in the works. I love this site = mike

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