GM's Gen V motors

Reply Subscribe

Thread Tools

Search this Thread

Feb 20, 2008 | 06:32 PM

#16

teal98

Registered User

Joined: Jul 2001

Posts: 3,132

From: Santa Clara, CA

Quote:

Originally Posted by Big Als Z

84 Didnt get TPI, 85 did. 84 got CFI or Crossfire Injection.

Correct! The '84 with Crossfire Injection (a fancy name for thottle body injection) had a massive 205hp.

Quote:

Originally Posted by Big Als Z

There is that talk of a DOHC version of the engine displacing 6.2 liters. I wonder what will come of that? How would you fit a DOHC head on an engine designed for OHV?
From what I understand, the Gen V wont look much different then a Gen III or IV. It will use the new L92 cylinder head design. Direct injection will be available. Im sure that VVT will return with maybe an upgrade?
My question is this talk of smaller engines using DI to maintain performance levels while getting much better gas milage? Will we see a wider range of small displacement V8s below 6 liters?There is that talk of a DOHC version of the engine displacing 6.2 liters. I wonder what will come of that? How would you fit a DOHC head on an engine designed for OHV?

Let's see. A 6.2 with MPFI and OHV makes 436hp. What happens with SIDI and DOHC? It sounds like we'll have some fun before CAFE hits!

I think you'll see turbo 4s and 6s instead of small V8s, but we'll see....

Feb 20, 2008 | 06:36 PM

#17

Z28x

Registered User

Joined: Jan 2000

Posts: 10,285

From: Albany, NY

Quote:

Originally Posted by R377

It's been done many times before, e.g. the Chevy 3.4 DOHC V6 was based on the OHV 60º V6.

Wow, I did not know that. That engine put out a lot of power compared to the OHV version too.

Feb 20, 2008 | 07:55 PM

#18

rlchv70

Registered User

Joined: Dec 2002

Posts: 681

Quote:

Originally Posted by Z28x

I'm still waiting to see who will be the first to put out a 3 valve pushrod V8

Not quite the same, but diesels (e.g. Duramax and the Powerstroke)commonly are 4 valve per cylinder pushrod engines.

Feb 20, 2008 | 07:59 PM

#19

rlchv70

Registered User

Joined: Dec 2002

Posts: 681

Quote:

Originally Posted by Z28x

Wow, I did not know that. That engine put out a lot of power compared to the OHV version too.

http://www.araoengineering.com/Chevy/chevysmb.htm

Feb 20, 2008 | 09:33 PM

#20

My Red 93Z-28

Registered User

Joined: Mar 2004

Posts: 1,503

From: BFE, Ohio

Quote:

Originally Posted by rlchv70

Not quite the same, but diesels (e.g. Duramax and the Powerstroke)commonly are 4 valve per cylinder pushrod engines.

Yes but they only see a little less than half the RPMs that gas engines do.

I don't think the dogbones and those tall skinny rockers would do much good at 7k.