need part interchange help fast!!!

[andrew_smith]

i have a 2001 3400 that needs heads. found a set of 01 3100 heads, will they interchange? help fast please i have to let them know if i want the heads or not

[ForcedFirebird]

Yup, the heads are the same.

[andrew_smith]

k i wanted to make sure because i went to autozone website and checked the part numbers on the head gasket set and they came up diff numbers. my 3400 is in a venture and i think the 3100 was in a malibu. not sure on that one though

[ForcedFirebird]

Correct. The head gaskets for a 3100 has a slightly smaller bore diameter. Make sure you use the gaskets that match your block (3400).

[andrew_smith]

wow so that was such a dumb ? for me to ask, i shoulda thought about that lol. thanks for the help man. i just wasnt using my head. ive been fighting this stupid van for almost 3 months. started with warped heads, had them milled and the moron took too much off now i need to replace the heads because my valves will not stay closed.
so the head gasket is the only differance? thanks again man i really appreciate it

[SappySE107]

If coolant got in the oil, your lifters are probably need to be torn down and cleaned up. Otherwise they have tendency to act like a solid lifter and the valves won't close.

You can take over .020" off the heads, and most shops won't do that unless you ask and I have never seen a head warp that much.

[DEI37]

Or, use a shorter pushrod.

[andrew_smith]

where would i find a shorter pushrod? as for coolant in my oil, i never saw any signs of that. it all went into the exhaust.

[ForcedFirebird]

Or, use a shorter pushrod.

Not with stock heads. If there was enough shaved off the heads to warrant shorter pushrods then fine, which may be the case here, but I have to agree with Ben that there is a possability the lifters are retaining water like a woman does that time of month

[andrew_smith]

well, im almost positive there was no water in the oil but for safety sakes, how do you take the lifters apart and clean them?