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Old 10-23-2012, 04:38 PM   #1
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ZR1 Engine and the ZL1 Engine

So what's the difference? Is the same LSA used in CTsV ZL1 AND ZR1?
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Old 10-23-2012, 04:47 PM   #2
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Zr1 has a 2.3L blower. Zl1 and ctsv have 1.9L

Zr1 has a different cam, among a few other internal differences.
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Old 10-23-2012, 04:48 PM   #3
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Quote:
Originally Posted by ZL1LEGEND View Post
So what's the difference? Is the same LSA used in CTsV ZL1 AND ZR1?
ZR1 has a LS9 which has a 2.3 Eaton blower.
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Old 10-23-2012, 05:00 PM   #4
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2.3L Blower vs. 1.9L Blower and Block and heads are beefier.
And the ZR1 Engine is about $10K More.

ZR1
  • Engine Type: LS Series Gen IV Small-Block V-8
  • Displacement (cu in): 376 cu in (6.2L)
  • Bore x Stroke (in): 4.06 x 3.62 (103.25 x 92mm)
  • Block: Cast-aluminum with 6 bolt,
  • cross-bolted main caps
  • Crankshaft (P/N 12598610): Forged Steel
  • Connecting Rods (P/N 12624231): Forged titanium
  • Pistons (P/N 12598634): Forged aluminum
  • Camshaft Type (P/N 12605527): Hydraulic roller
  • Valve Lift (in): .562” intake / .558” exhaust
  • Camshaft Duration (@.050 in): 211° intake / 230° exhaust
  • Cylinder Heads (P/N 12621774): Aluminum L92 style ports;
  • as cast with 68cc chambers
  • Valve Size (in): 2.16 intake / 1.59 exhaust
  • Compression Ratio: 9.1:1
  • Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion
  • Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: 92 octane
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal
LSA Motor
  • Engine Type: LS Series Gen IV Small-Block V-8
  • Displacement (cu in): 376 cu in (6.2L)
  • Bore x Stroke (in): 4.06 x 3.62 (103.25 x 92mm)
  • Block (P/N 12627939): Cast-aluminum with 6 bolt,
  • cross-bolted main caps
  • Crankshaft (P/N 12603616): Forged Steel
  • Connecting Rods (P/N 12604857): Powdered metal
  • Pistons (P/N 12625119: Hypereutectic aluminum
  • Camshaft Type (P/N 12605220): Hydraulic roller
  • Valve Lift (in): .480” intake / .480” exhaust
  • Camshaft Duration (@.050 in): 198° intake / 216° exhaust
  • Cylinder Heads (P/N 12604860): Aluminum L92 style port;
  • as cast with 68cc chambers
  • Valve Size (in): 2.16 intake / 1.59 exhaust
  • Compression Ratio: 9.1:1
  • Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion
  • Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: 92 octane
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal
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Old 10-23-2012, 05:31 PM   #5
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Hmm... Max' RPMs don't look right for LSA... I think it's something like 6200...
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Old 10-23-2012, 05:33 PM   #6
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I believe LS9 also has Ti intake and hollow-sodium-filled exhaust valves.
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Old 10-23-2012, 07:48 PM   #7
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Great post, Speedmon....and I agree with your points, as well Radz.

The differences are in strength of materials and hp/tq...not the design. So it's easy to confuse the two when just casually talking about it.
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Old 10-23-2012, 09:04 PM   #8
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Just playing a numbers game if GM would have put the LS9 in the ZL1 we would be looking at a 70k Camaro.
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Old 10-23-2012, 11:41 PM   #9
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Good stuff. Thanks for clarification. This settled a long time father son debate. Hahah

Last edited by ZL1LEGEND; 10-24-2012 at 07:12 PM.
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Old 10-26-2012, 12:28 PM   #10
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Just playing a numbers game if GM would have put the LS9 in the ZL1 we would be looking at a 70k Camaro.
And the shelby wouldnt be beating up stock zl-1's
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Old 10-26-2012, 12:35 PM   #11
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And the shelby wouldnt be beating up stock zl-1's
Itl be a lot closer when gm releases the stage 2 upgrade. From what I heard from the service manager at my dealer he said he was just in a meeting where they were talking about and it should be out by spring and be under 800 bucks.
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Old 10-26-2012, 12:37 PM   #12
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What are the differences between the ZL1 and the LS3 aside from the obvious Supercharger? LoL

Sent from my friggin Droid by two thumbs using Tapatalk 2 or whatever the ish it's called....
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Old 10-26-2012, 01:47 PM   #13
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Itl be a lot closer when gm releases the stage 2 upgrade. From what I heard from the service manager at my dealer he said he was just in a meeting where they were talking about and it should be out by spring and be under 800 bucks.
Really? Or are you...
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Old 10-26-2012, 01:53 PM   #14
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Originally Posted by DRKS1D3 View Post
Really? Or are you...
I'm being serious just talked to him yesterday morning.
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Old 10-26-2012, 04:35 PM   #15
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Quote:
Originally Posted by speedmon View Post
2.3L Blower vs. 1.9L Blower and Block and heads are beefier.
And the ZR1 Engine is about $10K More.


ZR1
  • Engine Type: LS Series Gen IV Small-Block V-8
  • Displacement (cu in): 376 cu in (6.2L)
  • Bore x Stroke (in): 4.06 x 3.62 (103.25 x 92mm)
  • Block: Cast-aluminum with 6 bolt,
  • cross-bolted main caps
  • Crankshaft (P/N 12598610): Forged Steel
  • Connecting Rods (P/N 12624231): Forged titanium
  • Pistons (P/N 12598634): Forged aluminum
  • Camshaft Type (P/N 12605527): Hydraulic roller
  • Valve Lift (in): .562” intake / .558” exhaust
  • Camshaft Duration (@.050 in): 211° intake / 230° exhaust
  • Cylinder Heads (P/N 12621774): Aluminum L92 style ports;
  • as cast with 68cc chambers
  • Valve Size (in): 2.16 intake / 1.59 exhaust
  • Compression Ratio: 9.1:1
  • Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion
  • Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: 92 octane
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal
LSA Motor
  • Engine Type: LS Series Gen IV Small-Block V-8
  • Displacement (cu in): 376 cu in (6.2L)
  • Bore x Stroke (in): 4.06 x 3.62 (103.25 x 92mm)
  • Block (P/N 12627939): Cast-aluminum with 6 bolt,
  • cross-bolted main caps
  • Crankshaft (P/N 12603616): Forged Steel
  • Connecting Rods (P/N 12604857): Powdered metal
  • Pistons (P/N 12625119: Hypereutectic aluminum
  • Camshaft Type (P/N 12605220): Hydraulic roller
  • Valve Lift (in): .480” intake / .480” exhaust
  • Camshaft Duration (@.050 in): 198° intake / 216° exhaust
  • Cylinder Heads (P/N 12604860): Aluminum L92 style port;
  • as cast with 68cc chambers
  • Valve Size (in): 2.16 intake / 1.59 exhaust
  • Compression Ratio: 9.1:1
  • Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion
  • Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: 92 octane
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal
Thank you for information-filled post.
Always wondering about detail, the crankshafts in both have the same stroke, and are both made of forged steel. They also have differing part numbers. Does anyone know the differences between the two?
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Old 10-26-2012, 09:30 PM   #16
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Quote:
Originally Posted by ZEDL1 View Post
Thank you for information-filled post.
Always wondering about detail, the crankshafts in both have the same stroke, and are both made of forged steel. They also have differing part numbers. Does anyone know the differences between the two?
I think the ZR1 crank has one more flywheel bolt.
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Old 10-27-2012, 02:24 AM   #17
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Quote:
Originally Posted by ace32x View Post
Itl be a lot closer when gm releases the stage 2 upgrade. From what I heard from the service manager at my dealer he said he was just in a meeting where they were talking about and it should be out by spring and be under 800 bucks.
Interesting.
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