GM heads for procharger
GM heads for procharger I'm newer to the FI world and have been doing a lot of reading to brush up on the basics. I have a fully stock internal LS1 out of a 2000 with 54k miles and all bolt ons.
Before I put on a D1SC kit, I plan on upgrading to a LS6 intake with a p&p TB, along with a blower cam (Speed Inc SC2 or Futral F7) with supporting valvetrain components.
My question is, while I'm already in there, should I replace my stock 241 heads with some 243's or 317's in prep for the boost? Looking to run 7-8 lbs with the stock internals to get around ~550hp. Is it worth it for a street application with my power goals in mind, or will the 241's be okay?
Thanks in advance for the help!
Before I put on a D1SC kit, I plan on upgrading to a LS6 intake with a p&p TB, along with a blower cam (Speed Inc SC2 or Futral F7) with supporting valvetrain components.
My question is, while I'm already in there, should I replace my stock 241 heads with some 243's or 317's in prep for the boost? Looking to run 7-8 lbs with the stock internals to get around ~550hp. Is it worth it for a street application with my power goals in mind, or will the 241's be okay?
Thanks in advance for the help!
There is nothing wrong with 241 heads and boost, they will do just fine. Also save your money on the P/P TB not worth it for what your doing. I would recommend pulling the heads and installing MLS gaskets and ARP head studs.
Last edited by conan; Feb 19, 2015 at 06:30 PM.
Perfect, $$ saved for other components! I was just going put on the p&p TB when I do the LS6 intake just for the increased throttle response, but its not needed with a with a D1SC?
I believe the MLS gaskets are .051" compressed. What would that put the compression at with untouched 241s?
I believe the MLS gaskets are .051" compressed. What would that put the compression at with untouched 241s?
Last edited by meeklay812; Feb 19, 2015 at 09:33 PM.
I get 10.05:1 compression with a 3.910 gasket bore and a compressed thickness of .054 for the GM MLS gasket. You could do a Cometic .040 gasket and bump to 10.3:1 compression, but the extra $$$ for the Cometics isn't really worth it. Keeping the compression up will help keep a crisp throttle response out of boost.
With all the extra money you just saved I would also look into a meth injection kit to help keep the stock bottom end alive as well.
With all the extra money you just saved I would also look into a meth injection kit to help keep the stock bottom end alive as well.
I'd consider Tick and Little John for the cam purchase as well.
Cam Motion is what I am running. If I ever change mine I may switch to a low lash solid roller from them but my car isn't a daily driver.
Cam Motion is what I am running. If I ever change mine I may switch to a low lash solid roller from them but my car isn't a daily driver.
Last edited by 007FJ; Feb 20, 2015 at 03:03 PM.
Still weighing my cam options a bit. My build will be a street weekend warrior, not a daily driver. What stage cam motion blower cam do you have, and how is it for the street?
Everyone says great things about the EPP cam, but I think I'm looking for something a bit smaller, which brought me to the Futral F7 or the Speed Inc SC2.
Everyone says great things about the EPP cam, but I think I'm looking for something a bit smaller, which brought me to the Futral F7 or the Speed Inc SC2.
Still weighing my cam options a bit. My build will be a street weekend warrior, not a daily driver. What stage cam motion blower cam do you have, and how is it for the street?
Everyone says great things about the EPP cam, but I think I'm looking for something a bit smaller, which brought me to the Futral F7 or the Speed Inc SC2.
Everyone says great things about the EPP cam, but I think I'm looking for something a bit smaller, which brought me to the Futral F7 or the Speed Inc SC2.
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What cam characteristics should I be looking for to provide the best low end torque for the street. I understand that a good blower cam should be a split pattern with roughly 8 degrees more duration on the exhaust side, ground on a 114-115LSA and no overlap. This will be primarily a weekend warrior and am looking for the most low end torque as possible.
Last edited by meeklay812; Feb 23, 2015 at 10:39 PM.
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