C4 in 351w
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Senior User
Joined: Jun 2014
Posts: 446
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From: Denton, TX
C4 in 351w
I am sure this has been discussed but I went through the search function and didn't really find much.
I have a 351w with a beefier cam, 4 barrel carb, intake, and headers.
Full disclosure, this engine and trans are going into a 47 pick up.
This truck will be used as a cruiser. The most abuse it'll get will be if I punch it off the line for a second or two. Zero towing or hauling.
I've currently got a c6, but the thing is so big and heavy. It is causing some interference with th brake pedal. Also, I've read it robs a lot of hp.
Would I be better suited to go with a c4? Will it suit my needs just fine? I am geared at 3.27, so a three speed is probably good.
I have a 351w with a beefier cam, 4 barrel carb, intake, and headers.
Full disclosure, this engine and trans are going into a 47 pick up.
This truck will be used as a cruiser. The most abuse it'll get will be if I punch it off the line for a second or two. Zero towing or hauling.
I've currently got a c6, but the thing is so big and heavy. It is causing some interference with th brake pedal. Also, I've read it robs a lot of hp.
Would I be better suited to go with a c4? Will it suit my needs just fine? I am geared at 3.27, so a three speed is probably good.
Tuned
Joined: Jul 2014
Posts: 270
Likes: 3
From: Texas
I just bolted a 351w in front of the c4 in my 85 f150. The 351 has shorty headers, dual plane intake, and a 600 cfm carb. I had this same engine coupled with a c6 and 3.55 gears before I put it in this truck with the c4 and 3.08 gears. The truck seems to get up and go a ton faster. The transmission was abused before I got it. Even with the 300 6 running on 5 cylinders I could feel it slipping. Now with the 351 it is for sure time for a rebuild.
Tuned
Joined: Jul 2014
Posts: 270
Likes: 3
From: Texas
Honostly, I think its just been beaten on too much. When I got it the fluid was burnt and the modulator was busted. When I get the money I'm going to have it rebuilt here localy with a 2,000 stall and a shift kit. Shop here in Caldwell qouted me about 750 to 800 depending what all parts are needed other than a rebuild kit, converter, and shift kit. Comes with either a 3,000 or 30,000 mile warranty, I don't clearly recall which one it was.
Thread Starter
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Senior User
Joined: Jun 2014
Posts: 446
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From: Denton, TX
Any more thoughts on this? I need to make a decision pretty soon on whether to try and fit this c6 in there or to go with a c4. It would sure be easier to use a c4. I just want to make sure it is strong enough. I will be putting a shift kit in either way I go.
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