Northstar Engines and System Technical Discussion Discussion, DOHC theory, any new information? in Cadillac Engine Technical Discussion; I wanted to discuss some of the issues I seem to be having regarding camshaft specs for the Northstar 4.6, ...
Automobile(s): 98 eldo/KD54 w/N37,T96,QA1,D55,DS3,U1Z. U3R next
Re: DOHC theory, any new information?
The things that you are talking about, MOST will not dabble in because they aren't trying to extract as much as they possibly can from their motor while going that deep into it.
Ironically, the things you are talking about I can appreciate but there is little to next to none for motorsport parts for this motor.
While it has it's quirkiness to headgaskets at times, this motor in stock trim in my opinion is severly de-tuned.
It gets the job done fairly decently in the massive bodies it has been placed into but yet, no tuning per se', no adjustable cam sprockets to dial in the motor as one sees fit. No decent exhaust systems that actually improve power versus exhaust note/sound.
I have a 2.3 quad 4 "A" engine in my 93 grand am gt . At one time Olds Rocketparts offered indexed cam sprockets for this engine. You could tailor the timing from 4 degrees advanced to 4 degrees retarded. Allowing one to "tune" for what they liked. Try find those things now........
I guess no one figured there would be some that would like to extract more power out of their stock set up.
Yet, I feel the biggest issue with the motor and maybe I'm wrong is that cross over pipe that joins the front exhaust manifold to the rear section. It's a tad bit small but conisdering it was packaged for a fwd platform, what is one to do.
When I finally start working on my eldo, I plan to disassemble the heads and clean up the bowls just under the valve seat and look at how much the exhaust port is possibly choked off.
As for sucking more power out of the set up, I suppose I can try to get pcm tuned for my 98 but I'd have to see some real world proof that it's worth it.
Till then I guess we sit and wonder how much potential the stock trim will really have.....