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| Head work https://slantsix.org/forum/viewtopic.php?t=22050 |
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| Author: | WILL'S74 [ Tue Feb 27, 2007 10:52 pm ] |
| Post subject: | Head work |
I was wondering how much can i mill my stock head with stock valves? |
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| Author: | Dart270 [ Wed Feb 28, 2007 2:15 am ] |
| Post subject: | |
This can be a complicated issue. What are your goals for the car and what type of fuel, cam, induction do you want to run? Physically, you can mill the head about 0.140" or more, which would give you something like 10.5:1 comp on a stock block. Lou |
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| Author: | WILL'S74 [ Wed Feb 28, 2007 8:12 am ] |
| Post subject: | |
Two barrel carb 800 to 4800 rpm comp cam port and polish 3 angle valve job. |
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| Author: | Dart270 [ Wed Feb 28, 2007 11:51 am ] |
| Post subject: | |
Educated guesses: For 87 octane, mill it 0.060". For high octane pump gas, mill it 0.100-0.120" The bigger mill may require custom pushrods. Lou |
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| Author: | WILL'S74 [ Wed Feb 28, 2007 11:56 am ] |
| Post subject: | |
I will have it milled to .050 just to be on the safe side. Thanks for the info. |
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| Author: | Charrlie_S [ Wed Feb 28, 2007 1:27 pm ] |
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Quote: I will have it milled to .050 just to be on the safe side. Thanks for the info.
I would go for the .060, you will lose about .015 due to the thicker aftermarket head gasket
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| Author: | cjh [ Fri Mar 02, 2007 4:13 am ] |
| Post subject: | |
The cylinder head on my s/6 has been milled down so there is no edge,(on the shallow side) and the "thumb print is gone" It ran ok on 95RON PULP. Had a modified dizzy, and it pulled like hell. Would do 120MPH and sit on it for 20mins or so. If you got a decent cam, you'll need the compression to make it work for you. |
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