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Camaro Z/28 Forum - Z/28 Specific Topics Discussions related to the 5th gen Camaro Z/28 model

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Old 03-05-2012, 04:36 PM   #26
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The SBC redesign, due up first in the C-7 Vette, is purportedly budgeted @ $1Billion (YUUUP...a "B")...and now the "buzz" is the architecture will support an in-the-future DOHC head conversion...
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Old 03-05-2012, 05:36 PM   #27
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Quote:
Originally Posted by unkillsam View Post
I think the only way you are going to see a Z28 model on the 5th Gen Camaro is with the 3.6 TT engine GM is developing.

Combined with a stripper 1LE style car, lightweight 18 inch alloy wheels, and a suspension package, this is the only way to make a lightweigh car in the spirit of the Z28 and still differentiate it from the ZL1.

Now flame away for suggesting no V8 in the Z28.
Why do you assume that a TTV6 would weigh less than a small block V8?
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Old 03-05-2012, 05:44 PM   #28
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Why do you assume that a TTV6 would weigh less than a small block V8?
I think it's fair to say, since Ford has resurrected the BOSS, the ONLY Z/28 iteration we're likely to see will be a DIRECT competitor with its "former" playmate...which means an SBC.

...and, carrying that thought a lil further, that may be one very good reason why the ZL1 was named as it was... After all, there are darned few true "secrets" in Motor City...
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Old 03-05-2012, 06:48 PM   #29
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I think it's fair to say, since Ford has resurrected the BOSS, the ONLY Z/28 iteration we're likely to see will be a DIRECT competitor with its "former" playmate...which means an SBC.

...and, carrying that thought a lil further, that may be one very good reason why the ZL1 was named as it was... After all, there are darned few true "secrets" in Motor City...
I do believe so.
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Old 03-08-2012, 12:13 AM   #30
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When GM redesigned the SBC into the LT and now the LS engines they had the chance to go with a DOHC engine, but they chose not to. Now they see what the newly designed LS engine can do, why go backwards? I would rather see a TT V8, maybe an aluminum block 4.8 or 5.3TT with direct fuel injection.
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Old 03-08-2012, 08:18 AM   #31
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When GM redesigned the SBC into the LT and now the LS engines they had the chance to go with a DOHC engine, but they chose not to. Now they see what the newly designed LS engine can do, why go backwards?
Oh, let's see...

Rev-ability

More power/cu. in., affording eventual smaller engines with equal power and better mpgs

More ECM versatility/tunability, leading to:

Lower Emissions, and...

Better Fuel Economy

Other than that, no real reason...

The bugaboo with "boost" is, when you create those extra horses and "exercise" 'em, they eat a LOT of "hay"...in the REAL world. Ask an owner of an Eco-Boost Ford pickup what they REALLY get for mpgs...

DI will be present in the soon-to-come Gen-5 SBC. In fact by '16, I doubt anyone will have a non-DI engine.
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Old 10-10-2012, 08:34 PM   #32
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an OHC 302cid would be the berries!
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Old 10-10-2012, 11:19 PM   #33
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I doubt the 302 would be revived but I wonder why the 5.7L isn't being produced.
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Old 10-10-2012, 11:37 PM   #34
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That would have been nice.
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Old 10-11-2012, 09:41 AM   #35
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Originally Posted by LOWDOWN View Post
Oh, let's see...

Rev-ability

More power/cu. in., affording eventual smaller engines with equal power and better mpgs

More ECM versatility/tunability, leading to:

Lower Emissions, and...

Better Fuel Economy

Other than that, no real reason...

The bugaboo with "boost" is, when you create those extra horses and "exercise" 'em, they eat a LOT of "hay"...in the REAL world. Ask an owner of an Eco-Boost Ford pickup what they REALLY get for mpgs...

DI will be present in the soon-to-come Gen-5 SBC. In fact by '16, I doubt anyone will have a non-DI engine.
Buddy of mine has one. Gets around 17 in town and 23 on the highway. pretty much exactly what its supposed to get. BUT, when he drives it hard or is towing he said the mileage does suffer
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Old 10-11-2012, 12:10 PM   #36
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I've had a 302 in the garage since 1973. Time to buy an upgraded version
I can remember back in 1999 or so our Camaro club was invited to the Pittsburgh Vintage Grand Prix to show our cars. It was the first time they allowed American Muscle Cars at the show. Scott/fbodfather brought some vintage Chevies to the show and it is where I met him for the first time. I don't know if he remembers or not, but I had my original '69 Z/28 there. Scott was so intense on discussing the 302 etc at the time. I fired it up for him and as it sat there loping at an idle through the chambered exhaust I swear he was in tears. Needless to say I'm sure he (and the Camaro team) still has the passion for a high reving small block Z/28. In fact he told me at the time that GM had taken a '90s camaro that had been damaged underneath, built a one off 302 and rebuilt the car. I don't know whatever happened to that Camaro, but rest assured I beleive we will have what we want in the next iteration of the Z/28.... it may not be a 302, but I beleive it will be a NA high reving small block of whatever displacement. Keep the faith and save your money!
You gotta the Chevy 302!
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Old 10-11-2012, 02:07 PM   #37
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Even an LS3 part#19259233 for a limited run of last year 5th gen Z28s would be balisstic:
525 HP @ 6300 rpm
489 LB-FT @ 4400 rpm


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Old 10-11-2012, 05:02 PM   #38
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But is it 50 state smog legal?
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Old 10-11-2012, 08:13 PM   #39
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Just because the current engines are based on 5.3 and 6.2 doesn't mean that GM will stick with that. It was that long ago GM motor displacement center around 5.0 (305) and 5.7 (350). You have to remember they need to get better fuel economy. We've been told yes to DI and currently no overhead cam for the next gen engines, but there hasn't been anything released about displacement. GM can drop the displacement and still keep the horse power numbers up with the addition of DI. I can see a 5.0 or 5.3 putting out 425hp. All we know for sure is that the corvette race time is trying out a 5.5L DI race engine in there cars. I thing that's been going on for about a year now.
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Old 10-11-2012, 08:32 PM   #40
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302 DI.....aaaaaah I don't think so......
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Old 10-11-2012, 08:35 PM   #41
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302 DI.....aaaaaah I don't think so......
I agree, I don't think we're likely to see a new 302 of any configuration any time soon if ever!
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Old 10-15-2012, 09:42 AM   #42
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I think it would be cool if they gave the camaro engine/hp options. I know they have the v6 and v8 now the zl1 which is supercharged but back in the day they sometimes had 4 different v8s to choose from all with different horsepower. It would set certain camaros apart and I would think be very cool.
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Old 10-15-2012, 10:00 AM   #43
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I think it would be cool if they gave the camaro engine/hp options. I know they have the v6 and v8 now the zl1 which is supercharged but back in the day they sometimes had 4 different v8s to choose from all with different horsepower. It would set certain camaros apart and I would think be very cool.
That can get quite expensive. To save cost shared powertrains will be the norm.
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Old 10-15-2012, 11:18 AM   #44
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I think it would be cool if they gave the camaro engine/hp options. I know they have the v6 and v8 now the zl1 which is supercharged but back in the day they sometimes had 4 different v8s to choose from all with different horsepower. It would set certain camaros apart and I would think be very cool.
Just like back in the day. but fuel regs are way to strict right now. But back in the day, you also had your choice of small blocks and big blocks. Not so anymore. It would be cool, but just not smart in todays auto world
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Old 10-15-2012, 12:11 PM   #45
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back in the day they sometimes had 4 different v8s to choose from all with different horsepower.
Actually, through the extended '69 Model Year, there were, at various times, ELEVEN V8's assembly line-available from the factory (one way or another):

Small Block
302-290 hp (Z/28-only)
307-200 hp (Base, late)
327-210 hp (Base, replaced late by 307)
350-255 hp LM1 (Base, optional)
350-300 hp L48 (SS-only)

Big Block
396-325 hp L35 (SS)
396-350 hp L34 (SS)
396-375 hp L78 (SS)
396-375 hp L78/L89 (SS-aluminum heads)
427-425 hp (L72) COPO 9561
427-430 hp (ZL1) COPO 9560

Combined with 2 different 6-cylinders, LOTS of choice...'way back when, but not today.

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Old 10-15-2012, 01:36 PM   #46
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I don't think it would be so expensive as it wouldn't be feasible Punch out a 4.8 by +1.45mm and you get a 302ci engine... Probably wouldn't happen though.
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Old 10-15-2012, 04:15 PM   #47
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There are currently 4 versions of engines that use the "LS3" block/style: L76, L92, LS3 and LS9. Even though it has been said by others here many times about how producing an engine just for the camaro would not be in GM's current mindset I still disagree. The major R&D gets completed making just one engine but the use of the block/heads can be used to still make many variations of an engine. They do it all the time. If they made lets say a "302DI" it could be used in the Impala, Colorado, base full size using different cam/crank/manifold design/tuning to get the desired effect on said vehicle. it is the same thing they aleady do today, and its not really building a one-off engine that its been said that would cost an arm and a leg to put into the Camaro the specific cam/heads/crank etc. would just be specific to the Camaro. I would still rather see the 5.3L DI in there at 475hp though 7000 redline.
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Old 10-15-2012, 09:32 PM   #48
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There are currently 4 versions of engines that use the "LS3" block/style: L76, L92, LS3 and LS9. Even though it has been said by others here many times about how producing an engine just for the camaro would not be in GM's current mindset I still disagree. The major R&D gets completed making just one engine but the use of the block/heads can be used to still make many variations of an engine. They do it all the time. If they made lets say a "302DI" it could be used in the Impala, Colorado, base full size using different cam/crank/manifold design/tuning to get the desired effect on said vehicle. it is the same thing they aleady do today, and its not really building a one-off engine that its been said that would cost an arm and a leg to put into the Camaro the specific cam/heads/crank etc. would just be specific to the Camaro. I would still rather see the 5.3L DI in there at 475hp though 7000 redline.
What makes you believe that the 5.3l is capable of putting out around 90 HP per liter compared to 69 HP per liter for the LS3? Is direct injection worth that kind of improvement?
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Old 10-15-2012, 10:37 PM   #49
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What makes you believe that the 5.3l is capable of putting out around 90 HP per liter compared to 69 HP per liter for the LS3? Is direct injection worth that kind of improvement?
Yes. The DI 3.6 V6 currently in the camaro is putting out about 90 hp/ L.

The non-DI 5.0 coyote with VVT is putting up around 84 hp /L and that's without DI.
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Old 10-15-2012, 11:50 PM   #50
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Yes. The DI 3.6 V6 currently in the camaro is putting out about 90 hp/ L.

The non-DI 5.0 coyote with VVT is putting up around 84 hp /L and that's without DI.
Those are both DOHC aren't they?
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