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Old 06-12-2011, 12:31 PM   #35
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Gwah? GM will absolutely never ever turn the Z28 into their drag king. Not. Gunna. Happen. They can make the ZL1 the top dog in all respects if they want (I remember hearing that the originals handled better than SS's too). I believe Fbodfather said something along the lines of "we won't sell a Z28 that doesn't deserve the name". Selling the Z28 as a drag car goes 100% completely against its road racing heritage
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Old 06-12-2011, 01:47 PM   #36
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Sorry just talking
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Old 06-12-2011, 01:57 PM   #37
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IMVHO - LS7 is the best LS' motor to get the nod. I think many people forget these cars have to pass smog, and I'm sure those LSX engines stand a way less chance at passing smog than LS7. In addition, I don't expect anything with an iron block to be installed in Z28 because of weight. I would really look toward an existing LS' production engine.

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Old 06-12-2011, 02:04 PM   #38
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Originally Posted by DGthe3 View Post
Gwah? GM will absolutely never ever turn the Z28 into their drag king. Not. Gunna. Happen. They can make the ZL1 the top dog in all respects if they want (I remember hearing that the originals handled better than SS's too). I believe Fbodfather said something along the lines of "we won't sell a Z28 that doesn't deserve the name". Selling the Z28 as a drag car goes 100% completely against its road racing heritage
I totally agree with never gonna happen! As far as the original ZL1 handling better than the SS, may have been so, but neither handled as well as the original Z/28s, the ZL1 back then was too "nose heavy" with the 427 BB (same thing with the 396 BB SS) and even the SS350 SBC back then did not have a good enough suspension to compete with the Z/28 on handling.
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Old 06-12-2011, 05:29 PM   #39
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The engine in the ZL1 BB weighed about the same as the SB. The ZL1 if I remember was basically a SS396 (375hp) with the engine swap and front spring change due to the lighter engine - aluminum.
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Old 06-13-2011, 06:01 PM   #40
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The engine in the ZL1 BB weighed about the same as the SB. The ZL1 if I remember was basically a SS396 (375hp) with the engine swap and front spring change due to the lighter engine - aluminum.
You are correct on the ZL1 engine weight (plus or minus a couple of pounds), that does not change the fact that the SS350, ZL1 and BB SS396/427 did not have a suspension equal to the task of handling like a Z/28 back then.
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Old 06-13-2011, 07:43 PM   #41
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I agree it should be a zippier motor to stay with the original concept.
It's not easy or cheap to do though. It has to have close to the same power, more would be better. 5.7L 7300 rpm with 450hp?
Destroked 6.3 as mentioned, with a wilder cam.
Oh, and the car should be 200lbs less.
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Old 06-13-2011, 08:13 PM   #42
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Oh, and the car should be 200lbs less.
High dollar option right there.....
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Old 06-13-2011, 09:17 PM   #43
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Hence his name fits.
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Old 06-13-2011, 09:41 PM   #44
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Hence his name fits.
touche...
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Old 06-16-2011, 11:23 PM   #45
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Indeed.
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Old 06-17-2011, 12:55 AM   #46
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I say go with a FI smaller displacement aluminum V8 in the 4 litre range. Talk about different, talk about weight reduction, talk about domination....there you go.
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Old 06-17-2011, 06:24 AM   #47
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^^^^^not gonna be any lighter
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Old 06-17-2011, 09:54 PM   #48
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I say go with a FI smaller displacement aluminum V8 in the 4 litre range. Talk about different, talk about weight reduction, talk about domination....there you go.
Forced induction & weight reduction don't go together. And cutting the cube's won't really save any weight. For example the 4.0L V8 that BMW developed for its M3 was praised for how light they managed to make it, a bit under 440 lbs I do believe. Thing is, it still weighs more than an LS3.
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Old 06-18-2011, 08:43 AM   #49
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Easy.... 427ci LS7, dry sump. But the Z28 would have to be soo much more than a better engine... lighter, better suspension parts, better tires... if not, it will fail to the ZL1 AND Boss 302. I hope they make a winner though!!
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Old 06-18-2011, 10:26 AM   #50
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They need to put in the 427 LS7 motor in the Z28.
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Old 06-18-2011, 11:16 AM   #51
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They need to put in the 427 LS7 motor in the Z28.
That would be great but just use the LSX block & DR heads.
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