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The Summit and JEGS aluminum heads are basically an identical knockoff to the AFR Enforcer heads... and they are almost identical price wise to the link I gave to the Skip White ones. There was an Engine Masters episode where they ran all of the cheap summit, promaxx, and AFR enforcer heads back to back on the same engine and the price to performance went to the AFR Enforcer heads hands down.
They do different things. The heated carb spacers keep the carburetor from freezing up when there is moisture in the air, similar to how carb ice forms in aircraft engines. The heat crossover in the intake warms up the floor of the intake manifold so that it doesn't condense the fuel out of the air/fuel mixture and form droplets of liquid fuel along the bottom of the manifold.
He did but was never happy with the way the truck ran in the cold. I followed his thread to see what he did.
Yeah- I was hoping that coolant passage on that manifold under the TBI would solve my problems. It just created new ones. I have tried TWO of those manifolds and both have porous castings. Both let coolant creep thru and onto the floor of the intake manifold. And until you get some coolant temps then you still get fuel puddling in the intake manifold. And since I have a TBI fuel injection the O2 sensor doesn't put up with it for long. I have had 3 go bad. Most recent one was just a few days ago.
What a pain in the a$$
Interesting, although I have to do more research to see if it meets emissions requirements here. I don't want to have to tinker with something to hope that it'll pass, when I can swap on heads and intake and not have to worry about it. Here, it has to pass sniffer and visual. Since my truck came with a carburetor, it would be easier to just stick with that.
wouldnt fret about it much.
It can happen. On my old 400 I bought it and found out later some lobes on the cam were wiped out. Replaced the cam. Then my dad upgraded the heads on his 290hp 350 crate. They only had a few thousand miles on them so I put them on the 400. Instantly started using a ton of oil. It never leaked, couldn't see it burn, but would use a quart every few hundred miles.tpi heads are win.
Never heard of no voodo
"new heads may cause oil to get sucked past the rings. Checking the lower end is advisable when adding new or refreshing old heads. The bores could be out of round, the rings could be worn, etc."
stuff like this though.
Well, it's $500 for rebuild smogger heads or reworked double humps, or $750 for brand new big valve high flow iron heads with a heat crossover.... I agree, seems like a no brainer to get the new, much better design, iron heads. Those aluminums would be awesome on a TPI system for sure though!tpi heads are win.
Never heard of no voodo
"new heads may cause oil to get sucked past the rings. Checking the lower end is advisable when adding new or refreshing old heads. The bores could be out of round, the rings could be worn, etc."
stuff like this though.
Seems to me 500 bucks is a much better option than more than double that to create the same difference.
Not worth it?
Are you sure? Might oughta sleep on it prior to pullin any triggers. Sounds to me like that is your next best cheaper option -that involves no headache, wont put your truck out of commission and wont ever fail.
What else is there? Are there other options? $500 sounds pretty good to me.
Be sure to install the copper shim head gaskets and bump the compression what ya can.
