[SpeedIsLife]

Originally Posted by 2SSRS@Gen5diy

Have to ask, do you know that for a fact?

Considering the LT1 is a very tight fit into the Alpha engine bay, and by it's very nature a DOHC is wider, it doesn't take much of a reach to see it's just not there.

Now could they change that? Sure..after all KarKraft did it in 69 for the Boss 429 by shaving shock towers, but that will result in a much more expensive car, assuming it's even possible with Alpha.

[2SSRS@Gen5diy]

Like this one?

[2SSRS@Gen5diy]

Its 205 KG with out dry sump.

[2SSRS@Gen5diy]

Originally Posted by SpeedIsLife

Considering the LT1 is a very tight fit into the Alpha engine bay, and by it's very nature a DOHC is wider, it doesn't take much of a reach to see it's just not there.

Now could they change that? Sure..after all KarKraft did it in 69 for the Boss 429 by shaving shock towers, but that will result in a much more expensive car, assuming it's even possible with Alpha.

Well will find out soon i think, but Al did say it will be nice to see a high revving motor in the 6th gen Z/28 so i still hold out hope that they make that happen.

[Bhobbs]

I read its 450 lbs dry, which seems pretty light for a 6.2 DOHC. The 5.0 Coyote and LT1 weigh roughly the same.

[Bhobbs]

Originally Posted by 2SSRS@Gen5diy

Well will find out soon i think, but Al did say it will be nice to see a high revving motor in the 6th gen Z/28 so i still hold out hope that they make that happen.

If they could get the LS7, with a 4" stroke, to rev to 7,200 rpm, then an LTx with a 3.622 stroke should be able to rev to 7,500. The valve train would have to keep up, so no AFM.

[2SSRS@Gen5diy]

Originally Posted by Bhobbs

I've been trying to find the weight for the AMG M159 but I haven't had any success. That's the only DOHC 6.2 I can think of.

Eight cylinders and a displacement of 6.3 litres in a front-mid-engine arrangement, a
high-revving concept, dry sump lubrication and a performance-oriented intake and
exhaust system: opening the almost two-metre long bonnet of the SLS AMG affords a
view of an outstanding high-performance engine spefically developed by AMG for the
new Gullwing model. With a peak output of 420 kW/571 hp at 6800 rpm and 650 newton
metres of torque at 4750 rpm, the AMG 6.3-litre V8 unit sets new standards and is also
the world’s most powerful naturally aspirated series production engine. The SLS
accelerates from zero to 100 km/h in 3.8 seconds, and has a top speed of 317 km/h

See 570hp is not hard to do, it happens my brother works for MB dealership and has one to sale used right now, but back to the point that is from MB on the M159.

[Bhobbs]

The M159 topped out at 622 hp for at least one year. If MB can get 622 hp out of a 6.2 n/a V8, so can GM. The M159 wasn't FPC and revved to 8k rpm.

[2SSRS@Gen5diy]

Lets see what they can come up with.

[BoostedX2]

I kinda feel that GM powertrain is a premier group....IF THEY WANT TO DO A 6.2 N/A 7500 RPM motor they will..and I WILL be a buyer!!!!

[2SSRS@Gen5diy]

Originally Posted by BoostedX2

I kinda feel that GM powertrain is a premier group....IF THEY WANT TO DO A 6.2 N/A 7500 RPM motor they will..and I WILL be a buyer!!!!

#2 right behind you.

[Bhobbs]

Originally Posted by BoostedX2

I kinda feel that GM powertrain is a premier group....IF THEY WANT TO DO A 6.2 N/A 7500 RPM motor they will..and I WILL be a buyer!!!!

If I can afford one, I will be next in line. I always wanted an LS6 car but never got one. I would love to see a hot LT1 under the hood of a Z/28.

[tsnow]

What has me scratching my head about a special engine for the Z is how do they recoup the development/durability/testing costs?
Even a revised LT1 would be certified and emissions tested for one model?
This will be a reasonably low volume ride.
If they could use another engine from the vette it would help spread costs and hopefully have a price point where it will sell.

Is the Twin Turbo 6 in the ATS dohc? Two more cyl and minus the turbos, may be close.
Would be a cool selling point, and sweet at the track!

[Bhobbs]

If Ford can put the Voodoo in a $50k Mustang, GM better damn well be able to put a modified LT1 in the Z/28 for the same price. The Voodoo is a much more engineering intensive engine than a cam/head LT1 would be.