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Old 04-30-2013, 08:00 PM   #341
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Wanna know more about the "heart" of the Z/28? Consider this timely thread as REQUIRED READING.

http://www.camaro5.com/forums/showthread.php?t=292539
I read that whole thing; very good read. I find it interesting that even though it seems the LS7 they're talking about for the Z/28 was showing 505 hp, Chevy is still only saying "about 500 hp" which I take it to mean they're still working on increasing the power. It would be nice if they could get an SAE rated 515 or more; maybe even 525 out of the production version.
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Old 05-01-2013, 08:00 AM   #342
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I read that whole thing; very good read. I find it interesting that even though it seems the LS7 they're talking about for the Z/28 was showing 505 hp, Chevy is still only saying "about 500 hp" which I take it to mean they're still working on increasing the power. It would be nice if they could get an SAE rated 515 or more; maybe even 525 out of the production version.
True Doc, and since GM is not changing anything internally on the motor itself as we know it's up to the airbox/air intake, tri-y's and exhaust where the gain will be found. Maybe 25 HP and 30 ft lb tq.
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Old 05-01-2013, 08:20 AM   #343
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True Doc, and since GM is not changing anything internally on the motor itself as we know it's up to the airbox/air intake, tri-y's and exhaust where the gain will be found. Maybe 25 HP and 30 ft lb tq.
The tune will also probably come into play a bit.
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Old 05-01-2013, 12:28 PM   #344
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The tune will also probably come into play a bit.
...yes indeedy, and hopefully they set it up as far as they can go within EPA limits...even if a surcharge comes into play, damn the torpedo's, full speed ahead...
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Old 05-01-2013, 01:56 PM   #345
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Originally Posted by LOWDOWN View Post
Wanna know more about the "heart" of the Z/28? Consider this timely thread as REQUIRED READING.

http://www.camaro5.com/forums/showthread.php?t=292539

Wow! Great stuff! Thanks a million for posting. Great look inside the development of the engine. Was surprised and a bit disappointed to learn the tri-y headers on the Z actually are more restrictive than then Vette's headers. I had thought they would provide hp/tq gains but it is the opposite.
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Old 05-01-2013, 02:04 PM   #346
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Wow! Great stuff! Thanks a million for posting. Great look inside the development of the engine. Was surprised and a bit disappointed to learn the tri-y headers on the Z actually are more restrictive than then Vette's headers. I had thought they would provide hp/tq gains but it is the opposite.
My thoughts as well after seeing them compared to the Corvette's. I thought they would flow better.

My guess is 520 HP and 500 TQ
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Old 05-01-2013, 02:44 PM   #347
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Wow! Great stuff! Thanks a million for posting. Great look inside the development of the engine. Was surprised and a bit disappointed to learn the tri-y headers on the Z actually are more restrictive than then Vette's headers. I had thought they would provide hp/tq gains but it is the opposite.
Correct, the OEM ZO6 exhaust manifolds fare very well compared to LT's. Since the Z/28 has to meet current emission standards ( SS & ZL-1's use 4 cats ) I expect the Z/28 may also. I wouldn't expect the Z/28 spec'ed LS7 to produce a whole lot more HP/TQ than the ZO6 spec engine. It's a pretty efficient and tuned piece already.
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Old 05-03-2013, 08:34 PM   #348
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...and another guess...

http://www.camaro5.com/forums/showthread.php?t=293071
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Old 05-03-2013, 08:54 PM   #349
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Spoken like a guy that actually knows what he's talking about and actually takes his car to the track on frequent basis and isn't half bad at it:


Don't matter what you were driving, very nice skills there... enjoyed the vids
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Old 05-05-2013, 01:09 PM   #350
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I agree. The CC brakes should be optional. Their price point alone will exclude some buyers. I guess the smart thing would be to take them off and put the zl1 rotors on. The Z/28 is 300 lbs lighter and will have superior braking performance anyway.
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Old 05-05-2013, 01:23 PM   #351
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Don't matter what you were driving, very nice skills there... enjoyed the vids
Thanks! Perhaps some vids will be made someday with the Z/28...

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I agree. The CC brakes should be optional. Their price point alone will exclude some buyers. I guess the smart thing would be to take them off and put the zl1 rotors on. The Z/28 is 300 lbs lighter and will have superior braking performance anyway.
The problem with that idea is that the Z/28 was built for use at the track. I'm betting that the CC brakes are necessary to avoid overheat/fade on a 3800lb car with 500hp. If you want consistent, fade free brake performance on a heavy car with lots of power, you need the CC brakes. Take a look at the GT500. Overheats at laguna seca after only one lap.
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Old 05-05-2013, 01:35 PM   #352
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Maybe an R package for the 1LE? R package would include: ZL1 front brakes, diff cooler, Z/28 shocks, splitter & spoiler.
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Old 05-19-2013, 08:39 PM   #353
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Whats the point in CC brakes being optional? The point is, it can use the weight reduction, lower CG, and RPM advantage to dive into corners, maintain a line, and pull away. The breaks are key there.
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