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would you install a c4 behind a 700hp big block?

17K views 18 replies 11 participants last post by  86GT32 
#1 ·
Been doing some reading, and come across a few guys arguing about glide or c4. Anyways, from what I've seen personally, most use a glide or c6 behind a big block, and it seems like a c4 couldn't stand up to that much horsepower for long before it destroys itself. I can see a c4 being used for a street application, and maybe some track use, but not a dedicated racecar. Am I wrong? Transmission Guru's please chime in.
 
#4 · (Edited)
THE BEST C4 lasts about 20 good passes then it slows about 100th or so,and get slower from there,this is w/trans brake and 800hp plus, the tq and the heat is what kills em.

round robin with lots of power better cool it very well


street big cooler,no brake? it will last a lot longer


so for your question about your deal,sure why not


but if you never want to worry,and when you want more power use a c6
 
#9 ·
i currently use a tko600 and want to go to an automatic sometime. and i keep on going back and fourth between a ford c4 and a c6 or even a powerglide chevy.

i have a bbf c6 trans in the backyard that has been sitting in the elements. and my car is a OEM c6 car so thats a plus.

i will make 100% sure before i do the plunge.
 
#10 ·
C4

C4 cost more to build but will hold up to 700hp. I'm running 85 mustang with spray around 800hp going on 2nd season was torn done after 1st season no problem found. Ran car on street drove 30 miles to the track, 1st season was at track every week end. If trans is built right will hold up, c6 will be much cheaper to build. Joe
 
#11 ·
C4 cost more to build but will hold up to 700hp. I'm running 85 mustang with spray around 800hp going on 2nd season was torn done after 1st season no problem found. Ran car on street drove 30 miles to the track, 1st season was at track every week end. If trans is built right will hold up, c6 will be much cheaper to build. Joe

I have to agree the C6 is going to be much cheaper. If your will to pull the trans and freshen it up more often than the C6 you can use the advantage of power the C4 would give. Personally i have might mite from Dynamic Racing with trans brake and converter form them. I am pushing 950hp on pump on the street and will go to the track on the weekends. The trans is fully rolerized with many aftermarket upgrades and we also switched the gearing in it as to not have such a worthless 1st gear. I would give them a call they will tell you straight up if it will work or if they recommend something else.
 
#18 ·
No sir I didn't know yours wasn't running yet,sorry

Thought it was a while ago,I. not on a lot
 
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