LS2 400 HP for a Reason!
Team Owner
Joined: Feb 2000
Posts: 45,471
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From: Texas
CI 1-4-5-8-9-10 Vet
St. Jude Donor '03 thru '10, '17
Re: cost of the ZO-7 (Guru_4_hire)
I have to give the nod to modern technology. I love the old stuff as much as anyone but: when I build up a stout (streetable, pump gas) 454 for my '67 Camaro next year, including aftermarket aluminum cylinder heads, headers, and solid lift cam, I can only hope to equal the output of a heads and cam LS1....with 100 more cubic inches on my side and without any of the restrictions being placed on my engine (emissions, CAFE) that the LS1 complies with. 
Team Owner
Joined: Apr 2002
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From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Re: cost of the ZO-7 (need-for-speed)
How much are we talking here. Lingenfelter LS1s are 430hp I believe.
1.3 hp per cube is not out of line for an old 454 if you plan well
[Modified by Guru_4_hire, 3:22 PM 4/25/2004]
1.3 hp per cube is not out of line for an old 454 if you plan well
[Modified by Guru_4_hire, 3:22 PM 4/25/2004]
Team Owner
Joined: Feb 2000
Posts: 45,471
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From: Texas
CI 1-4-5-8-9-10 Vet
St. Jude Donor '03 thru '10, '17
Re: cost of the ZO-7 (Guru_4_hire)
Well, there are plenty H/C LS1s putting down 440 HP AT THE WHEELS, which equates to 518 HP at the crank. Yes, 1.3 is possible, but I plan to make mine very streetabe, with a dual plane intake, reasonable size carb and a cam that doesn't need 1000 prm to idle, and able to run on 93 octane fuel. Computer controlled spark also has a lot to do w/ throttle response of todays muscle cars. While 1.3 may be possibe, I'm talking about real HP....not air dyno or simulator numbers. If I had a dollar for every guy that got embarrassed when he took his carbureted big block to a dyno day ..... well, let's just say I could buy a TT Lingenfelter motor to drop in. Old tech motors almost never dyno as well as expected.
Instructor
Joined: Sep 2003
Posts: 101
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From: Brooklyn NY
Re: LS2 400 HP for a Reason! (golfman)
I'm so confused with the info GM has been putting out on the C6 because they make it sound like the LS2 is a brand new engine but from what some of you guys are saying, that's not the case.
I mean I read about a new block, a redesigned bottom-end, more displacement, etc.
I've been trying to figure out what the difference is between the LS6 and the LS2 other than the obvious 5HP rating but I don't get it. A side by side comparison shows the same HP & torque. What difference does 5HP make anyway? Is "LS2" just a marketing gimmick?
What I'm most interested in knowing though (because I still plan on buying a 2004 Z06) is whether the LS6 maintains a performance edge over the new LS2....does anybody know?
Thank you!
I mean I read about a new block, a redesigned bottom-end, more displacement, etc.
I've been trying to figure out what the difference is between the LS6 and the LS2 other than the obvious 5HP rating but I don't get it. A side by side comparison shows the same HP & torque. What difference does 5HP make anyway? Is "LS2" just a marketing gimmick?
What I'm most interested in knowing though (because I still plan on buying a 2004 Z06) is whether the LS6 maintains a performance edge over the new LS2....does anybody know?
Thank you!
Team Owner
Joined: Apr 2002
Posts: 62,198
Likes: 1
From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Re: cost of the ZO-7 (need-for-speed)
Well, there are plenty H/C LS1s putting down 440 HP AT THE WHEELS, which equates to 518 HP at the crank. Yes, 1.3 is possible, but I plan to make mine very streetabe, with a dual plane intake, reasonable size carb and a cam that doesn't need 1000 prm to idle, and able to run on 93 octane fuel. Computer controlled spark also has a lot to do w/ throttle response of todays muscle cars. While 1.3 may be possibe, I'm talking about real HP....not air dyno or simulator numbers. If I had a dollar for every guy that got embarrassed when he took his carbureted big block to a dyno day ..... well, let's just say I could buy a TT Lingenfelter motor to drop in. Old tech motors almost never dyno as well as expected.
Team Owner
Joined: Feb 2000
Posts: 45,471
Likes: 892
From: Texas
CI 1-4-5-8-9-10 Vet
St. Jude Donor '03 thru '10, '17
Re: cost of the ZO-7 (Guru_4_hire)
.
Who said anything about low tech. Carburation <> low tech.
Who said anything about low tech. Carburation <> low tech.
Yes, carbs aren't necessarily low tech. And that's why I'm not going to spend a butt load installing fuel injection on my '67 Camaro. A carb will do just fine. Not all carbureted motors dyno poorly. It just takes more skill with jetting, metering rod selection, metering rod springs, or power valves, distributor weights, and springs. I will re-state:
If I had a dollar for every guy that showed up at a dyno day with his carbureted motor with a rumpity rump cam and left with his tail between his legs, I'd be able to buy a TT Lingenfelter motor.
[Modified by need-for-speed, 8:38 AM 4/27/2004]
Team Owner
Joined: Apr 2002
Posts: 62,198
Likes: 1
From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Re: cost of the ZO-7 (need-for-speed)
.
Who said anything about low tech. Carburation <> low tech.
You referred to the motors of the 60's and quoted 500 HP. As another guy mentioned, that was SAE Gross HP. So it's not an objective comparison to say a 500 HP factory motor was available in the 60's while discussing 500 HP motors measured using SAE Net HP. Motors of the 60's are low tech.
Yes, carbs aren't necessarily low tech. And that's why I'm not going to spend a butt load installing fuel injection on my '67 Camaro. A carb will do just fine. Not all carbureted motors dyno poorly. It just takes more skill with jetting, metering rod selection, metering rod springs, or power valves, distributor weights, and springs. I will re-state:
If I had a dollar for every guy that showed up at a dyno day with his carbureted motor with a rumpity rump cam and left with his tail between his legs, I'd be able to buy a TT Lingenfelter motor.
[Modified by need-for-speed, 8:38 AM 4/27/2004]
Who said anything about low tech. Carburation <> low tech.
You referred to the motors of the 60's and quoted 500 HP. As another guy mentioned, that was SAE Gross HP. So it's not an objective comparison to say a 500 HP factory motor was available in the 60's while discussing 500 HP motors measured using SAE Net HP. Motors of the 60's are low tech.
Yes, carbs aren't necessarily low tech. And that's why I'm not going to spend a butt load installing fuel injection on my '67 Camaro. A carb will do just fine. Not all carbureted motors dyno poorly. It just takes more skill with jetting, metering rod selection, metering rod springs, or power valves, distributor weights, and springs. I will re-state:
If I had a dollar for every guy that showed up at a dyno day with his carbureted motor with a rumpity rump cam and left with his tail between his legs, I'd be able to buy a TT Lingenfelter motor.
[Modified by need-for-speed, 8:38 AM 4/27/2004]
I am thinking about making a 502 with the ZZ502 shortblock with the AFR 315 P&P heads. The zz502 crate motor is quite a deal and probably will take an upgraded cam very nicely as well as some simple porting and polish work.
[Modified by Guru_4_hire, 6:07 PM 4/28/2004]
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Drifting
Joined: Feb 2002
Posts: 1,260
Likes: 0
From: Chapel Hill NC
Re: LS2 400 HP for a Reason! (golfman)
http://forums.corvetteforum.com/zero...584#1547200584
You may want to read this thread. Jim Hall has some interesting thoughts about the LS2 engine and its power rating.
You may want to read this thread. Jim Hall has some interesting thoughts about the LS2 engine and its power rating.
