New Dual Cam V8

[RacerX]

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[Guest Your Car is Slow]

dual cam? or quad cam?

 

I thought the benefit of having multiple cams was the ability independently control the intake and exhaust valves (and adjust as necessary).

 

With a dual cam V8...how would that happen? Its still one cam per head?

 

Or perhaps one cam controls the intake on both sides and the other controls the exhaust on both sides?

 

That would be interesting to say the least

[Guest thinkmonkey]

I keep a darn good eye on the automotive industry, especially my favorites GM and BMW, but I haven't seen any news of this. GM is planning on adding variable valve timing to the existing small block chevy, and some of this technology was seen in the cadillac V16 concept. A dual cam overhead valve design would benefit from VVT, but would be overkill without. You don't always need DOHC's, even on modern high revving engines, just look at Mercedes 3 valve SOHC AMG engines. Long live the small block, it turns 50 in 2005 with over 70 million produced.

 

-Dave

[zxgts-4]

Yes the info I saw on it showed the two cams stacked vertical one above the other in the valley of eng with one cam for exhaust valves the other for intakes I think it was to possibly apply to their v6 as well. Neil.

[warrenp]

dual cam? or quad cam?

 

I thought the benefit of having multiple cams was the ability independently control the intake and exhaust valves (and adjust as necessary).

 

With a dual cam V8...how would that happen? Its still one cam per head?

 

Or perhaps one cam controls the intake on both sides and the other controls the exhaust on both sides?

 

That would be interesting to say the least

 

chevrolet aslready made the zr1 corvette with dual over hard cams

and the v8 northstart is 32 valve but i believe there are no cams at all

the valves are controled buy clyinoids. this might have been a misunderstanding?

also dual over head cam: 2 cams per head

[Guest thepenguin99]

I dont think the lt5 engine from the zr-1 vette was a chevrolet design.

[Guest Your Car is Slow]

Yes warren...im aware of what DOHC stands for...thanks

 

There are a few DOHC V8 motors around (Mustang cobra etc).

 

The northstar motor is also a DOHC 32v V8.

 

 

However Dual cam and DOHC are two different things.

[warrenp]

Your Car is Slow, sorry about that i guess i just misunderstood your post

 

i found one of those nothstar motors the other day at a junk yard for $800

i have some doubts about it mounting to a RWD tranny.

 

yah for the longest time i thought my 86 300zx was DOHC

and a z32 was quad cam. until some one cleared that up for me.

 

as far as the zr1 maybe i'm wrong but was that a lotus motor?

i was told once that lotus put a motor in a vette so my guess would be the ZR1

[Guest Brewster]

I keep a darn good eye on the automotive industry' date=' especially my favorites GM and BMW, but I haven't seen any news of this. GM is planning on adding variable valve timing to the existing small block chevy, and some of this technology was seen in the cadillac V16 concept. A dual cam overhead valve design would benefit from VVT, but would be overkill without. You don't always need DOHC's, even on modern high revving engines, just look at Mercedes 3 valve SOHC AMG engines. Long live the small block, it turns 50 in 2005 with over 70 million produced.

 

-Dave[/quote']

The current "small block Chev" is related to the original Mouse Motor by numeric ID only. Smart marketing by GM calling it a 5.7. I can't remember the exact year, but the original sbc went away a number of years ago.

[Guest Your Car is Slow]

Its cool.

 

I dont know how you would mate a RWD tranny to a northstar motor...its a transverse engine if I remember correctly.

 

As for the ZR1/LT5...yea..it was designed by lotus..I think mercury marine assembled it however. Only thing chevy did was make a pretty package for it to sit in

[Moridin]

http://www.chrfab.com makes a bellhousing to mate a T56 to the Northstar. The XLR is using a RWD version of the Northstar now.