2014 Lt1
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6th Gear
Joined: Apr 2009
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From: coffeyville kansas
2014 Lt1
I am looking to purchase a 2014 corvette conv. I have looked at a lot of pictures of the LT1 engines, but can't figure out why the LT1 460 HP has the add oil port on the left bank of the engine and the 465 HP does not show the add oil port. I realize the 465 HP is accomplished with the Z51 package. Could someone enlighten me on this issue.
Race Director
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From: La Center WA
2014s with the NPP dual-mode performance exhaust system have 460 hp and 465 ft./lbs. of torque, regardless of whether or not the car is a Z51. Those without have 455 hp and 460 ft. lbs. The 460 hp version uses the dry sump system while the 455 hp one does not. On 2014s, there was no relationship between Z51 and hp or oiling system.
Thread Starter
6th Gear
Joined: Apr 2009
Posts: 6
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From: coffeyville kansas
2014s with the NPP dual-mode performance exhaust system have 460 hp and 465 ft./lbs. of torque, regardless of whether or not the car is a Z51. Those without have 455 hp and 460 ft. lbs. The 460 hp version uses the dry sump system while the 455 hp one does not. On 2014s, there was no relationship between Z51 and hp or oiling system.
Safety Car
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From: Coralville Iowa
Racer
Joined: May 2015
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From: Maple Ridge British Columbia
i am looking to purchase a 2014 corvette conv. I have looked at a lot of pictures of the lt1 engines, but can't figure out why the lt1 460 hp has the add oil port on the left bank of the engine and the 465 hp does not show the add oil port. I realize the 465 hp is accomplished with the z51 package. Could someone enlighten me on this issue.
Racer
Joined: Mar 2016
Posts: 360
Likes: 74
2014s with the NPP dual-mode performance exhaust system have 460 hp and 465 ft./lbs. of torque, regardless of whether or not the car is a Z51. Those without have 455 hp and 460 ft. lbs. The 460 hp version uses the dry sump system while the 455 hp one does not. On 2014s, there was no relationship between Z51 and hp or oiling system.
IMHO thats the way to go. I wish the Z06 did not force the dry sump. I don't like it.
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
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The NPP exhaust is supposed to add 5 to HP and Torque. Period.... Dry sump is not the reason for the HP/Torque difference.
So, W/O NPP 455 HP 460 Torque
with NPP 460 hp 465 Torque
Z51 doesn't mean squat for the HP. Z51 gives different gear ratios in the transmission and rear differential.
Elmer
So, W/O NPP 455 HP 460 Torque
with NPP 460 hp 465 Torque
Z51 doesn't mean squat for the HP. Z51 gives different gear ratios in the transmission and rear differential.
Elmer
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From: Boca Raton FL
St. Jude Donor '11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21
The NPP exhaust is supposed to add 5 to HP and Torque. Period.... Dry sump is not the reason for the HP/Torque difference.
So, W/O NPP 455 HP 460 Torque
with NPP 460 hp 465 Torque
Z51 doesn't mean squat for the HP. Z51 gives different gear ratios in the transmission and rear differential.
Elmer
So, W/O NPP 455 HP 460 Torque
with NPP 460 hp 465 Torque
Z51 doesn't mean squat for the HP. Z51 gives different gear ratios in the transmission and rear differential.
Elmer
Drifting
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From: Boxford Massachusetts
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2014s with the NPP dual-mode performance exhaust system have 460 hp and 465 ft./lbs. of torque, regardless of whether or not the car is a Z51. Those without have 455 hp and 460 ft. lbs. The 460 hp version uses the dry sump system while the 455 hp one does not. On 2014s, there was no relationship between Z51 and hp or oiling system.
The purpose of the dry sump is for track use. Wet sump cars cornering under high-G loads with oil sloshing around can uncover the oil pickup in the oil pan (wet sump), which is not a good thing for engine health. Dry sump systems ensure that oil is always being consistently pumped throughout the engine regardless of G-loads.
Last edited by Foosh; Dec 17, 2016 at 12:01 AM.
Race Director
Joined: Mar 2005
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From: La Center WA
2014s with the NPP dual-mode performance exhaust system have 460 hp and 465 ft./lbs. of torque, regardless of whether or not the car is a Z51. Those without have 455 hp and 460 ft. lbs. The 460 hp version uses the dry sump system while the 455 hp one does not. On 2014s, there was no relationship between Z51 and hp or oiling system.
What you say in bold above is not accurate with regard to the oiling system. You're right that on the LT1 the extra 5 HP is just a function of the NPP equipage, according to GM, and that wet sump cars can also have NPP. However, all C7 Z51 models since the beginning have been dry sump, as have all Z06 and GS cars.
The purpose of the dry sump is for track use. Wet sump cars cornering under high-G loads with oil sloshing around can uncover the oil pickup in the oil pan (wet sump), which is not a good thing for engine health. Dry sump systems ensure that oil is always being consistently pumped throughout the engine regardless of G-loads.
The purpose of the dry sump is for track use. Wet sump cars cornering under high-G loads with oil sloshing around can uncover the oil pickup in the oil pan (wet sump), which is not a good thing for engine health. Dry sump systems ensure that oil is always being consistently pumped throughout the engine regardless of G-loads.
- Z51s use dry sump and non-Z51s do not.
- Cars with NPP have 460 hp / 465 ft. lbs of torque whereas cars without have 455 / 460 respectively.
- It's the NPP that adds 5 to both hp and torque, not the dry sump.
