weld heads

[1tuffcj]

so i was going through my garage and takeing invitory. some of you might remember after i did my build, and just fireing the beast up. i discovered i had a cracked head, that the machine shop should of fluxed it then i would'nt of wasted so much time. they said they did so either they lied or i cracked it buy lifting it with the cherrry picker.
antway i went with some edlebrock aluminum heads ( love them ). my question is can i get it welded. the thing is at the machine shop they put new valves spring, valve seats and all that goes into cleaning up a set of head's.
i just came across a free 360, it's been seating for awhile so i know i'm gonna have to go through it. can i use the 401 heads on the 360, would that be a good thing or not realy.
i also have my old t-150 i was gonna rebuild it and put it behind the 360.
watch you think, all advise is welcome.
thanks in advance.

[tufcj]

Cast heads can be repaired, but it depends where the crack is. If it's external, they usually drill a small hole at the end of the crack to stop it, insert a pin, weld and grind flat. Cracks into the combustion area are more difficult.

360 and 401 heads are the same, and can be interchanged.

T-150 is an iffy trans at best. I broke 3 of them behind a very mild 360 before swapping in a T-18.

Bob
tufcj

[ironman_gq]

I think the trans itself isnt that bad. it just has crappy ratios and not the best syncros. I am still using my t150 and I only rebuilt it with new bearings and syncros. so far its held up but I just have a slightly massaged 304 Its still not even close to a mild 360

[1tuffcj]

here's where the crack is, it also looks like it goes about 3/4 to 1" along the 90 dgreees. what do you think, like i said all new parts on it.
http://i88.photobucket.com/albums/k161/blob_04/Picture066.jpg

[tufcj]

That's actually a very common place for AMC heads to crack (especially 291-Cs). I've had a couple fixed and pressure tested and put back into service.

What usually causes that is too much torque on the bolt too fast. I torque the heads on in at least 3 stages. First pass at 30, then 60, then 2 passes at full torque. Haven't had one crack since.

Definitely fixable. Take it to a shop that specializes in heads though, not just the local welder.

Bob
tufcj

[AMX69PHATTY]

Someone on another sight had pictures where they had that area "spray welded" ???

:-|

[1tuffcj]

thanks you guy's, now to find someone who speacializes in head work.

[Mudrat]

Bump for TUF and I too have a question.

Did the long run to Jacks place and got his stuff, including the old 401 heads he had. It had been so long since I've seen him (or hte heads) I forgot that he ate some bolts along the way. (No wonder it was knocking Jack!!! :shock: )

Now that I have these boat anchors here - can these be fixed? =D>

http://members.cox.net/mudrat-jeeper/401-Heads/NO1-small.JPG

http://members.cox.net/mudrat-jeeper/401-Heads/NO5-small-1.JPG

http://members.cox.net/mudrat-jeeper/401-Heads/NO5-small-2.JPG

http://members.cox.net/mudrat-jeeper/401-Heads/NO8-small-1.JPG

[tufcj]

I'd have them magnafluxed and pressure tested, but as long as there's no cracks, they're completely salvageable.

I had a 304 head that dropped a valve, the valve head turned sideways and was rammed into the seat by the piston (putting a hole in the piston). The machine shop had to machine out the seat and install a new one, and do a little polishing to remove sharp edges, but the head was put back into service.

Bob
tufcj

[fuzz401]

see I told you mudrat #-o :?

[Mudrat]

Yeah, YOU told me on the phone Bob stuck it out there in WRITING :lo1l: 111!!!

by the way, called Aeromotive - any -6 o-ring will work on the regulator and any AN-6 fitting. It's just the countersink in the regulator that makes the difference. They're sending me the O'rings because I found Summit didn't list the right discription :!: :t:
They are $12 for 10 at Jegs (Aeromotive 15621) and $10 for 10 on Summit.


And $6.77 for 10 on Amazon.com :shock:

[ironman_gq]

gonna be another $10-12 for that "free" shipping from jegs or summit. 111!!!

[fuzz401]

See I told you to call them #-o :? :?:

[Mudrat]

See I told you to call them #-o :? :?:
Yeah, but I had to ask for the O-rings :wink: