Ford vs Chevy Build-up

[HandOverFist]

Just some leftover paint I had from the trunk.

[HandOverFist]

Due to looming time constraints and the seemingly lack of C4 cores I bought a race ready C4 from Dynamic Transmission in Conn. It will be a fwd manual valve body, rollerized and equipped with a 2.90 gearset.

Had I known it was going to be such a problem locating a core I would have began my search much earlier. When Arnett told me he had not located one I knew I was in trouble. I'll still get Thomas to build one if a core ever materializes for a spare. All I need now is to get a convertor spec'd by ATI or someone else.

[SSGT Mustang]

I probably should have mentioned this earlier, but I didn't know that you were in the market for a built C4 instead of just a core.

Ed Horensky who I believe is a member of this site is very, very knowledgable about C4's. I highly recommend that you look him up.

I sent the C4 in my Super Stocker to Dynamic for a rebuild. They did a very nice job, and seemed to have worked out some longstanding problems that I had with the trans brake. They are a good shop, and I'm sure that you'll be happy with them. I still would strongly recommend that you talk to Ed. He has information about many things that will be helpful to you.

I used JPT converters for a long time, but switched to Coan when Jim retired. I'm very pleased with Coan for many reasons. Excellent shop.

Several guys I know switched from other converter builders to Ultimate and picked up. You may want to give them a call, or Coan.

Nothing against ATI, but they would not be my first choice for a C4.

[HandOverFist]

I wasnt in the market for a built trans until recently when I realized a waiting on a suitable core was going to seriously put me behind. I would be interested in other's experiences with different convertors...this is not set in concrete yet.

[partsbob67]

is that spacer legal between the manifold halves?

[HandOverFist]

Originally Posted by partsbob67

is that spacer legal between the manifold halves?

Likely not...I have that almost sorted out.

[7423]

Originally Posted by partsbob67

is that spacer legal between the manifold halves?

Good eye Bob............

[partsbob67]

i see. very nice build.

[SSGT Mustang]

Originally Posted by HandOverFist

I wasnt in the market for a built trans until recently when I realized a waiting on a suitable core was going to seriously put me behind. I would be interested in other's experiences with different convertors...this is not set in concrete yet.

You may want to consider a C5 core. It's a later version of the C4 with an improved case. The band adjusters are metric, I believe, with fine threads. It also has better fluid passages. You would need to change the bell housing to a C4 housing since the converters are different. But, they are nice transmissions, and worth a look. I believe that everything else in them is C4 (I can double check for you).

Some builders prefer the C4 by default because from what I can gather they are just used to building them. But, again, there's really no difference between a C4 and C5 other than some case improvements. From what I see the C5 seems to be a better transmission. I'm building a K/SA for my son, and will be using one.

Follow up: There may be some other differences. Going out for the day, but I'll take a closer look when I get back. Nevertheless, you should look into them.

[fordteacherguy]

Originally Posted by SSGT Mustang

You may want to consider a C5 core. It's a later version of the C4 with an improved case. The band adjusters are metric, I believe, with fine threads. It also has better fluid passages. You would need to change the bell housing to a C4 housing since the converters are different. But, they are nice transmissions, and worth a look. I believe that everything else in them is C4 (I can double check for you).

Some builders prefer the C4 by default because from what I can gather they are just used to building them. But, again, there's really no difference between a C4 and C5 other than some case improvements. From what I see the C5 seems to be a better transmission. I'm building a K/SA for my son, and will be using one.

Follow up: There may be some other differences. Going out for the day, but I'll take a closer look when I get back. Nevertheless, you should look into them.

C5's have a deeper bellhousing due to the deeper lock up converter they used, but have a improved oiling system that is a plus.The valve body is unique and is usually traded out for a C-4 valve body. Front band adjuster is a fine thread that is a 2:1 ratio to a stock C-4 course thread so you have to double your band clearance turns to 3 turns instead of the usual 1 1/2 turns. They are good cores to use if you swap the bellhousing for a C-4.