Compression ratio what to do??

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JKrebs said:
OK well. Being I'm looking at $700 to have my heads done up before milling and i will need to have my intake milled more $$. Then I will need to replace my pistons and rings. More money. After all the input from everyone i believe the closed chamber aluminum heads are the most efficient way to get 10:1. I did want to use the X heads but i really don't want to carve them up either.
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Don't mill the intake. That makes it special, and it won't exactly "fit" anything else. Instead, mill the intake side of the heads when you mill the combustion chamber side. With a LA engine you take 95% off the intake side vs the combustion chamber. Examples: Take .010 off the CC side, take .0095 off the intake side. Take .020 off the CC side, take .019 off the intake side.
 
JKrebs said:
That is an interesting article on heat and pressure. Just when i thought i had a plan forward. Got me thinking again.........
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So what is the question? Some of that is useful info, some is not. Remember, that is a sales site....

The Edelbrock plan is a good one IMHO; good low end torque with that SCR and good flow to extend the RPM band up. IMHO, both flow and CR is the best of both worlds: a wide, flexible RPM range is great on the street and appropriate for things like road racing, rally, and autocross. You will have torque on demand over a wide RPM range.
 
nm9stheham said:
So what is the question? Some of that is useful info, some is not. Remember, that is a sales site....

The Edelbrock plan is a good one IMHO; good low end torque with that SCR and good flow to extend the RPM band up. IMHO, both flow and CR is the best of both worlds: a wide, flexible RPM range is great on the street and appropriate for things like road racing, rally, and autocross. You will have torque on demand over a wide RPM range.
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I'm going with the Edelbrock heads. I don't think I can go wrong with that decision. Thanks for your input.
 
If you buy the eldebrock heads, have your machine shop check them out before bolting on.
I had issues with the intake guides on mine.
 
sireland67 said:
If you buy the eldebrock heads, have your machine shop check them out before bolting on.
I had issues with the intake guides on mine.
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A good thought IMHO. We had 4 intake guides dragging a bit on a new pair.... there were some tiny burrs left in the guides. Not a bad issue really. There were a few valves that were a few thousands off center. The machinist corrected it on a Serdi machine and smoothed out below the seats a bit. Cost $100-110 total.. but shop work is fairly cheap here.
 
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