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The beginning...LSx project

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Old 04-16-2018, 10:35 AM
  #41  
JakeOelSnakeO
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Subbed! I've currently got my LT1 and 4L60E out of my car. I'm building up a LY6/T56 swap for my '94. The only thing I havent quite decided on yet is what to do with the front accessory drive- what donor parts to use or if I will keep AC or not.

Good luck with build!
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Old 04-16-2018, 11:31 PM
  #42  
Krusty84
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Stock LS3 heads, long tubes and a decent cam is the only way to go with a cheap 6.0 swap. Spending serious cash on some Cathedral Ports to retain the "low to mid-range" torque everyone always talks about isn't worth the money. Run a manual trans or a 3k+ stall with the LS3 heads and have some real fun.
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Old 04-19-2018, 04:19 PM
  #43  
Mike Holmen
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The trade off is the LS3 heads don't make as much torque and power below 4000 rpm like cathedral head. Don't forget you need a different exhaust rocker arm and a rocker arm trunnion kit if you going to have a cam with lifts over 0.550 lift.

For $500 Katech will cnc port/adjust combustion chamber size.
http://store.katechengines.com/cnc-p...eads-p589.aspx

Its a cheap way to get near stock LS3 flow numbers and the ability to adjust combustion chamber size.

I have a set of cnc 0821 GM LS3 heads, I'm on the edge on whether to sell them and going send in my LQ9 0317 to Kaltech. The LS3 is really too much head without the variable cam timing for us high geared C4 corvette.

My car is driver and I worry more about fuel mileage/drivablity than maximum power. Worst case is you could throw on a boost adder device if you need more power.
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Old 04-20-2018, 05:04 AM
  #44  
Krusty84
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Originally Posted by Mike Holmen View Post
The trade off is the LS3 heads don't make as much torque and power below 4000 rpm like cathedral head. Don't forget you need a different exhaust rocker arm and a rocker arm trunnion kit if you going to have a cam with lifts over 0.550 lift.

For $500 Katech will cnc port/adjust combustion chamber size.
http://store.katechengines.com/cnc-p...eads-p589.aspx

Its a cheap way to get near stock LS3 flow numbers and the ability to adjust combustion chamber size.

I have a set of cnc 0821 GM LS3 heads, I'm on the edge on whether to sell them and going send in my LQ9 0317 to Kaltech. The LS3 is really too much head without the variable cam timing for us high geared C4 corvette.

My car is driver and I worry more about fuel mileage/drivablity than maximum power. Worst case is you could throw on a boost adder device if you need more power.
Blah blah blah.... I don't like making a lot of horsepower and torque above 4k, I drive my 'driver' like a baby and want the extra 18 ftlbs below 4k.

Last edited by Krusty84; 04-20-2018 at 05:04 AM.
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