heads

96 XLT OHV V6 4.0L 250K on original motor Problem: Blown head gasket (and/or cracked head) Question: Should I include a valve job when having the heads replaced or will having a super tight top end overly stress my lower end and cause it to fail, or fail quicker? Condition of rings: Good...

Hello, I'm new here. I'm looking for high quality heads for my 91 4.0 Explorer. I had heard of a company that was making heads that were much better than the original ones but I understand that theywent out of business. Does anyone have any info on this? Steve. 91 Eddie Bauer 4 door

Hello, I just finished replacing my heads and manifolds with headers. Got it all back together went to start it and it started right up. Wouldnt idle but thats nothing new (Probably bad IAC). Normally it will idle after a minute or so of holding the gas to about 1K rms. It did eventually idle...

Just picked up a set of 95tm heads toput on my 94 block. While I have it open, I'd like to put in a different cam. My question is-the 410 cam, is there a significant enough of a difference between stock to justify the cost/time to install it compared to a stock cam? Is the power gains of the 422...

I swear I posted this, but maybe I did something wrong - sorry if it is a dupe! My neighbor buddy, along with my small hands and arms, finished changing the plugs. However we noticed a hole to the left of the front plug on bank one. We cannot identify it through that stupid Haynes manual...

hello,im mark from Tn,i just bought a 03 explorer and a 02 explorer xlt 4-wd both with the 4.0 engine.the 02 was being driven 2 weeks ago,the guy said the oil pressure started dropping and it finally just quit,seems his oil descending unit plug started leaking and leaked out all the oil,he was...

Let me start by saying hello to everyone. I have been coming here often after acquiring my '93 Explorer Sport, and now have some questions to hopefully be answered. I have searched all these things individually, but not finding the answers that pertain to my certain application. First of all...

Hey guys. I recently had a clog in the cooling system that ultimately ended in two blown head gaskets and two cracked heads. Moral of this story is DONT USE STOP LEAK like the girl who owned my truck before me. Anyway im looking for a decent used set of cylinder heads for an 99 OHV 4.0 and if...

ok so i ordered some brand new heads for the 4.0 ohv ford v6. the seller (ebay) even had me give him the cast number on my old heads. the only difference between them is the exhaust ports, the new ones are more round and smaller then the factory ones, and the other difference is in the...

I have a 94 Explorer XLT, I took apart the engine because the head gaskets were done, but I discovered the cylinder heads were cracked. The intake manifold was corroded and I might need new Exhaust manifolds as well. Im 17 I start college in mid january. So im wanting to fix it for school. i...

I have a 97 5.0, unfortunately made before the switch to GT40P heads according to the build date. i am considering buying a set of P heads to install, as it needs to come apart for head gaskets anyway. What i would like to know is; would this be a direct swap, or am i into some work? and is...