Peanut Port #14092360

[Sgt Gus]

Does this look like ahead with 326k+ miles on it? You can one tell from a stupid pic?

Just curious.
Gus

 

[Turbo4whl]

Not peanut port but the larger oval port. If made in the early 1970's it would need to have had hardened valve seats installed sometime in it's life as the early 70's did not have flame hardened valve seats. Over a 1/4 million miles, sure!

As stated would have been on a passenger car. I would need to find my book for more correct info. Possibly from a 402 or 454 as they shared some same heads.

 

[Sgt Gus]

Not peanut port but the larger oval port. If made in the early 1970's it would need to have had hardened valve seats installed sometime in it's life as the early 70's did not have flame hardened valve seats. Over a 1/4 million miles, sure!

As stated would have been on a passenger car. I would need to find my book for more correct info. Possibly from a 402 or 454 as they shared some same heads.

These are peanut port from the #14092360
I originally planned to fix two broken exhaust bolts, then figured if pulling one...and if needs remanufacture, should do both, then realized I'll have everything off and gonna just redo whole engine. Now is the time anyways.

 

[Turbo4whl]

Not peanut port but the larger oval port. If made in the early 1970's it would need to have had hardened valve seats installed sometime in it's life as the early 70's did not have flame hardened valve seats. Over a 1/4 million miles, sure!

As stated would have been on a passenger car. I would need to find my book for more correct info. Possibly from a 402 or 454 as they shared some same heads.

Yes, when researching those heads I got wrong info..

These are peanut port from the #14092360
I originally planned to fix two broken exhaust bolts, then figured if pulling one...and if needs remanufacture, should do both, then realized I'll have everything off and gonna just redo whole engine. Now is the time anyways.

Peanut port heads are good for low RPM torque, but get all choked up around 4500 RPM. Peanut port heads are on my 1998 3500, with a 454.

Same answer to your first question. Those old low RPM big blocks just keep on running. So yes they look like 326K. Your second question, no I could not tell from your picture. I needed to see the intake ports to know they were peanut port heads. I believed what I found researching the casting numbers.

 

[Sgt Gus]

Yes, when researching those heads I got wrong info..




Peanut port heads are good for low RPM torque, but get all choked up around 4500 RPM. Peanut port heads are on my 1998 3500, with a 454.

Same answer to your first question. Those old low RPM big blocks just keep on running. So yes they look like 326K. Your second question, no I could not tell from your picture. I needed to see the intake ports to know they were peanut port heads. I believed what I found researching the casting numbers.

Oh, no, you're all good. I meant can someone tell if they have miles on them from pic. I just thought they looked pretty dam good and was surprised. Was concerned I was rebuilding something that may not need it.
Texting sucks for communication sometimes, and I was probably not clear.
Thanks for your feedback Brother!

 

[Buck69]

Does this look like ahead with 326k+ miles on it? You can one tell from a stupid pic?

Just curious.
Gus

It is a bit tough to tell from the angle of your photo, but it appears there is a big variation in the amount of threads exposed on the rocker studs. As a rule, that is not the case on a fresh or low mileage head. It is the first thing I look at when removing a cover. Part of diagnosing problems.
I would never be concerned with freshening something up if you do not know it's history.

 

[Ricko1966]

Depending on your funds,on a tight budget,vacuum or solvent check the ports for seal. Preferably vacuum. If all ports will hold vacuum check the tops of the valves for front to back,side to side motion,not much wiggle at the tops of the valves all ports hold vacuum,change valve seals if you have the ability and they'll run a long time.

 

[Sgt Gus]

Really, since it's for my girl and pretty sure all original, I was gonna rebuild vs pulling a head to fix or both to remanufacture. The machine shop can do all that stuff for me.
Stressing over stock cam, mild upgrade, or if a couple other choices are too much.
I keep asking questions and have an email out to someone if I don't irritate them on cam.

 

[Craig Nedrow]

Really, since it's for my girl and pretty sure all original, I was gonna rebuild vs pulling a head to fix or both to remanufacture. The machine shop can do all that stuff for me.
Stressing over stock cam, mild upgrade, or if a couple other choices are too much.
I keep asking questions and have an email out to someone if I don't irritate them on cam.

Hey Mark, this is the cam I am running, came with the motor. Runs 16 lbs vacuum, smooth idle, not much over 4500 rpm's. Also have Air Gap intake, and Flow tech heders. Non of these parts are too expensive. Truck is fun to run, tows great, burns the tires at will. https://www.gmsquarebody.com/threads/1973-k20-350-to-454-swap.29840/ Post 1\#15

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[Sgt Gus]

Hey Mark, this is the cam I am running, came with the motor. Runs 16 lbs vacuum, smooth idle, not much over 4500 rpm's. Also have Air Gap intake, and Flow tech heders. Non of these parts are too expensive. Truck is fun to run, tows great, burns the tires at will. https://www.gmsquarebody.com/threads/1973-k20-350-to-454-swap.29840/ Post 1\#15

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Nice! Looks like we don't need much cam to get over 300hp. Stay flat tappet or go for roller long term. This truck is for my daughter believe it or not.
She drained oil and filter yesterday with only my supervision. I held water pump and she removed. Then I putsed around cleaning oil pressure switch and bolts.

 

[Craig Nedrow]

Nice! Looks like we don't need much cam to get over 300hp. Stay flat tappet or go for roller long term. This truck is for my daughter believe it or not.
She drained oil and filter yesterday with only my supervision. I held water pump and she removed. Then I putsed around cleaning oil pressure switch and bolts.

Stay with flat tappet hyd if replacing unless it is already a roller, much cheaper, and results are pretty good, and reliable.

 

[Sgt Gus]

@Ricko1966
I plan to stay mild cam shooting for about 300hp. Will have Harris do a stage 2 custom chip.

 

[Mark Jones]

Here some information you can use. Those 360s are peanut port heads with stellite seats. Any factory carburated stock 454 engine made 320 HP with headers on the dyno. Properly done 9.3 comp, 228 @ .050 cammed 454s can perform like this:

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Not sure what can be done with the TBI 454.

 

[Radiohead]

Here some information you can use. Those 360s are peanut port heads with satellite seats. Any factory carburated stock 454 engine made 320 HP with headers on the dyno. Properly done 9.3 comp, 228 @ .050 cammed 454s can perform like this:

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Not sure what can be done with the TBI 454.

What was the e.t.?

 

[Craig Nedrow]

Jonesy kicking some a_ _ love it Mark.