LG Motorsports 346 VS 402 same H/C, its all in the stroke
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Nice looking graph Doug. You picked up a lot of power under the curve and even peak you are right. You fulfilled you goal and then some congrats. Standing by for the next round of tuning with the 95mm I'll bet money Lou is sneaking an ls7 MAF sensor on there also for the second round of tuning. I am guessing 522 rwhp 508Tq when its all said and done.
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Nice looking graph Doug. You picked up a lot of power under the curve and even peak you are right. You fulfilled you goal and then some congrats. Standing by for the next round of tuning with the 95mm I'll bet money Lou is sneaking an ls7 MAF sensor on there also for the second round of tuning. I am guessing 522 rwhp 508Tq when its all said and done.
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allngn c5, I was tired when I posted that. What I mean is you already had a lot of power. I know on paper and at the track it's a difference cause of the numbers. How much faster does it feel? Worth the money? Were you happy with your 346? Sorry for so many questions. I just don't want to dump money on a H/C setup for my 346 when I should be saving for a 402 instead.
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allngn c5, I was tired when I posted that. What I mean is you already had a lot of power. I know on paper and at the track it's a difference cause of the numbers. How much faster does it feel? Worth the money? Were you happy with your 346? Sorry for so many questions. I just don't want to dump money on a H/C setup for my 346 when I should be saving for a 402 instead.
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______|346______________|402______________|
RPM___|HP___|TQ___|HP/ci|HP___|TQ___|HP/ci|
3000..|200..|360..|0.6..|240..|420..|0.6..|
3500..|240..|380..|0.7..|280..|430..|0.7..|
4000..|300..|395..|0.9..|360..|470..|0.9..|
4500..|375..|440..|1.1..|420..|485..|1.0..|
5000..|420..|440..|1.2..|460..|485..|1.1..|
5252..|440..|440..|1.3..|480..|480..|1.2..|
5500..|455..|430..|1.3..|490..|465..|1.2..|
6000..|480..|420..|1.4..|505..|440..|1.3..|
6500..|485..|390..|1.4..|500..|400..|1.2..|
The 346 displaces more horsepower per cubic inch at every load point
RPM___|HP___|TQ___|HP/ci|HP___|TQ___|HP/ci|
3000..|200..|360..|0.6..|240..|420..|0.6..|
3500..|240..|380..|0.7..|280..|430..|0.7..|
4000..|300..|395..|0.9..|360..|470..|0.9..|
4500..|375..|440..|1.1..|420..|485..|1.0..|
5000..|420..|440..|1.2..|460..|485..|1.1..|
5252..|440..|440..|1.3..|480..|480..|1.2..|
5500..|455..|430..|1.3..|490..|465..|1.2..|
6000..|480..|420..|1.4..|505..|440..|1.3..|
6500..|485..|390..|1.4..|500..|400..|1.2..|
The 346 displaces more horsepower per cubic inch at every load point
Last edited by MNR-0; 01-13-2009 at 11:19 PM.
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I can understand why, a max effort 346 needs more revs and takes alot more beating to make the same power. Especially on a stock bottom end. I wonder how my car would handle that much more torque especially with the traction issues I have now even N/A. Are you going to be running a DR?
Also I am debating back and forth between a 402 build and a FI build what made you chose to go this way?
Also I am debating back and forth between a 402 build and a FI build what made you chose to go this way?
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______|346______________|402______________|
RPM___|HP___|TQ___|HP/ci|HP___|TQ___|HP/ci|
3000..|200..|360..|0.6..|240..|420..|0.6..|
3500..|240..|380..|0.7..|280..|430..|0.7..|
4000..|300..|395..|0.9..|360..|470..|0.9..|
4500..|375..|440..|1.1..|420..|485..|1.0..|
5000..|420..|440..|1.2..|460..|485..|1.1..|
5252..|440..|440..|1.3..|480..|480..|1.2..|
5500..|455..|430..|1.3..|490..|465..|1.2..|
6000..|480..|420..|1.4..|505..|440..|1.3..|
6500..|485..|390..|1.4..|500..|400..|1.2..|
The 346 displaces more horsepower per cubic inch at every load point
RPM___|HP___|TQ___|HP/ci|HP___|TQ___|HP/ci|
3000..|200..|360..|0.6..|240..|420..|0.6..|
3500..|240..|380..|0.7..|280..|430..|0.7..|
4000..|300..|395..|0.9..|360..|470..|0.9..|
4500..|375..|440..|1.1..|420..|485..|1.0..|
5000..|420..|440..|1.2..|460..|485..|1.1..|
5252..|440..|440..|1.3..|480..|480..|1.2..|
5500..|455..|430..|1.3..|490..|465..|1.2..|
6000..|480..|420..|1.4..|505..|440..|1.3..|
6500..|485..|390..|1.4..|500..|400..|1.2..|
The 346 displaces more horsepower per cubic inch at every load point
Nice chart. Really shows how hard that little 346 had to work.
I was told that there are many more issues to deal with when it comes to FI ($$$) and more maintenance. I wanted a new forged motor that was going to last and take care of me, also provide a good base to grow from. (Nitrous, or Bigger heads and D1sc) LOL, I know I just contradicted myself, but the real reason on no FI, lack of money to do it right. I didn't cut any corners on this motor.
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![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
______|346______________|402______________|
RPM___|HP___|TQ___|HP/ci|HP___|TQ___|HP/ci|
3000..|200..|360..|0.6..|240..|420..|0.6..|
3500..|240..|380..|0.7..|280..|430..|0.7..|
4000..|300..|395..|0.9..|360..|470..|0.9..|
4500..|375..|440..|1.1..|420..|485..|1.0..|
5000..|420..|440..|1.2..|460..|485..|1.1..|
5252..|440..|440..|1.3..|480..|480..|1.2..|
5500..|455..|430..|1.3..|490..|465..|1.2..|
6000..|480..|420..|1.4..|505..|440..|1.3..|
6500..|485..|390..|1.4..|500..|400..|1.2..|
The 346 displaces more horsepower per cubic inch at every load point
RPM___|HP___|TQ___|HP/ci|HP___|TQ___|HP/ci|
3000..|200..|360..|0.6..|240..|420..|0.6..|
3500..|240..|380..|0.7..|280..|430..|0.7..|
4000..|300..|395..|0.9..|360..|470..|0.9..|
4500..|375..|440..|1.1..|420..|485..|1.0..|
5000..|420..|440..|1.2..|460..|485..|1.1..|
5252..|440..|440..|1.3..|480..|480..|1.2..|
5500..|455..|430..|1.3..|490..|465..|1.2..|
6000..|480..|420..|1.4..|505..|440..|1.3..|
6500..|485..|390..|1.4..|500..|400..|1.2..|
The 346 displaces more horsepower per cubic inch at every load point
I am sure if he changed cames to something more comparable to that big cam in a 346 with the 402 the numbers would say a different story.