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I found a motor for sale havnt seen it yet supposedly a 352 out of a delivery truck. guy told me it says C7TE on both the heads and the intake, cant really seem to find much info on these numbers, mainly want to know about the heads as i am going to be building a 390 and want a good set. I don't know if it could possibly be one of those ft motors with a steel crank rather than an fe, means that it was in a delivery truck?
thanks for any info
Ok thanks, thats all i really need to know as far as that, now i am just stuck on whether i should use the earlier low riser heads or use my existing d2te aa castings, i am building a mild 390 probably not spin anything much over 6k, and somewhere between 325 and 400 horse or so. The way i understand it with the lowrisers i would definetly have more flow capabilities, but would give up around a half a point of compression vs using my d2te's but either way i plan on doing whatever necessary to run on 93. I dont know if the extra flow will make any difference with a mild build such as mine or not but if it will help any i want to squeeze all i can out of it.
If it were me, stick with the D2TE heads or a set of C8AE heads for a "mild" build.
No need to go nuts, these heads flow well, and if you have the bucks, a set of oversize (428CJ size) exhaust valves and appropriate porting will help the exhaust side.
I don't see what vehicle you intend to put it in. Manual or auto tranny? What gears are in it, and what size tires?
I dont need it to pull hard up to 6 i just want something capable of touching that without falling on its face, i am capable of doing some port work, i have ported a set of 460 heads before and some for small engines. I will be mud racing with the the truck in a lower class and if the earlier heads will help give me an edge i want them. It is a 76 f250 4x4 36" tires, 4:10 gears, auto trans
The 390 in my '74 that I built was perfectly capable of hitting 6K without a big deal.
Too-large carb (750 holley), Edel Performer (not RPM), big cam, 428CJ-size exhaust vaves and well ported exhaust ports, long-tube headers, C8AE heads (same as the D2TE), some opening of the intake ports, especially in the bowl of the valve pocket, stock rockers, and it would rev right to the 6K rev limiter on the MSD 6AL ignition under a decent load in 3rd gear.
I wouldn't suggest doing that repeatedly, but it worked for me.
I can't say how much earlier heads would help. It all depends on how much you are able to pull at the peak horsepower, versus having to pull from low RPMs. Mud racing is pretty much at peak horsepower so MAYBE earlier ones with a bigger intake port would help. But even then, it's not going to help if the exhaust side isn't free flowing.
Ok, maybe i'll try to find some flow data on the heads, but im leaning towards using my d2's since i already have those, and they have hardened exhaust seats. Will my d2's have the rocker shaft assembly like the earlier c1ae heads? i havnt pulled my motor apart yet, but an earlier 61 thunderbird motor i was looking at had the valve covers off and i noticed it had a rocker shaft assembly vs individual rockers. And how much seat pressure can the stock valvetrain handle? I just picked up a couple 76 f250s today both supposedly with 390's so i should have a nice parts selection to choose from!
thanks