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Suggestions with my new combo please

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Old Jun 21, 2016 | 07:24 PM
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Default Suggestions with my new combo please

6.0 iron 05 block, crank and rods, DSS 1830BSX-4000 flat tops with valve reliefs (-5cc's). Im out of the hole .001. I will be running LS3 heads, a carb intake, and a 4150 sized EFI setup. This is going in a 67 Pro Touring style Camaro with a TR6060. I was specd basically the BTR LS3 NA cam 225/238 .612"/.585" 113+3. Here are my questions:

1) How much can I mill these heads without worrying about PTV issues? Over .030 possible?
2) What is the MAX compression I can achieve with this setup taking into factor milling and head gasket thicknesses?
3) Should I run a dual plane for optimal midrange or run a single plane?
4) Should I run more cam?

First hand experience would be appreciated. Thanks
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Old Jun 22, 2016 | 03:24 PM
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Originally Posted by Quickfrc
6.0 iron 05 block, crank and rods, DSS 1830BSX-4000 flat tops with valve reliefs (-5cc's). Im out of the hole .001. I will be running LS3 heads, a carb intake, and a 4150 sized EFI setup. This is going in a 67 Pro Touring style Camaro with a TR6060. I was specd basically the BTR LS3 NA cam 225/238 .612"/.585" 113+3. Here are my questions:

1) How much can I mill these heads without worrying about PTV issues? Over .030 possible?
2) What is the MAX compression I can achieve with this setup taking into factor milling and head gasket thicknesses?
3) Should I run a dual plane for optimal midrange or run a single plane?
4) Should I run more cam?

First hand experience would be appreciated. Thanks
What are your goals?

You have questions regarding milling the heads. Why? What are you looking to accomplish with that?

You have questions regarding 'more cam]. Why? What are you looking to get that the BTR cam won't give you?

BTW.....you have a spec'ed BTR cam. But then, you want to change the spec's. Why?

Again.....what are your goals. Is this car a daily driver? Gonna be street/strip? And, oh.....what's your general budget?

C'mon Quick.....talk to us!

KW
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Old Jun 22, 2016 | 04:08 PM
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Originally Posted by KW Baraka
What are your goals?As much power as I can make.

You have questions regarding milling the heads. Why? What are you looking to accomplish with that? More power. More power, more torque, better driveability.

You have questions regarding 'more cam]. Why? What are you looking to get that the BTR cam won't give you? Seems a little small for me.

BTW.....you have a spec'ed BTR cam. But then, you want to change the spec's. Why?See above

Again.....what are your goals. Is this car a daily driver? Gonna be street/strip? And, oh.....what's your general budget?Its a street car. Not a daily driver.

C'mon Quick.....talk to us!

KW

Answers are in red.
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Old Jun 22, 2016 | 04:43 PM
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Originally Posted by Quickfrc
6.0 iron 05 block, crank and rods, DSS 1830BSX-4000 flat tops with valve reliefs (-5cc's). Im out of the hole .001. I will be running LS3 heads, a carb intake, and a 4150 sized EFI setup. This is going in a 67 Pro Touring style Camaro with a TR6060. I was specd basically the BTR LS3 NA cam 225/238 .612"/.585" 113+3. Here are my questions:

1) How much can I mill these heads without worrying about PTV issues? Over .030 possible?
2) What is the MAX compression I can achieve with this setup taking into factor milling and head gasket thicknesses?
3) Should I run a dual plane for optimal midrange or run a single plane?
4) Should I run more cam?

First hand experience would be appreciated. Thanks
1) Since you have valve reliefs, you shouldn't have to worry about PTV too much. You can mill a lot off the heads and still have sufficient clearance, however, you will have to mill the manifold to get the ports to line up properly.

2) This is kind of a loaded question, but you should be able to mill .100" off the heads and get to about 12:1. I'm not familiar with the valve relief depth in the DSS pistons, but it might be getting a little close with that much taken off.

3) I wouldn't run a dual plane. It seems they're real bad about distribution of the air and fuel. It's probably less of a problem if it's an EFI dual plane, and there's an injector in each runner, but you're still going to have poor distribution of air between cylinders/banks.

4) Maybe a little more intake duration would be good, but I've always tried to err on the small side on a street car. The LS3 stuff on smaller engines can really tempermental when you go too big with the overlap and IVC.
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Old Jun 23, 2016 | 01:06 AM
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Good info. Thanks!
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