RPM limitations of stock 2v

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11-05-2009, 09:10 PM

#51

Sxynerd

6th Gear Member

Join Date: Feb 2006

Location: Virginia

Posts: 11,786

do you two boys need a minute?

11-05-2009, 09:13 PM

#52

H0SS302

6th Gear Member

Thread Starter

Join Date: Oct 2006

Location: Texas

Posts: 10,551

Quote:

Originally Posted by sxynerd

do you two boys need a minute?

maybe...

I was gonna buy some pulleys from him but I want to get the mach lower crank so Im not going to get them anymore so he was throwing that in to poke at me about it im sure lol

11-06-2009, 12:38 AM

#53

SVTeeshirt

5th Gear Member

Join Date: Nov 2007

Location: Maryland

Posts: 4,955

Quote:

Originally Posted by sxynerd

When you say better valvetrain, Are you referring to spring and and a more evenly distributed valve setup? The stock cam followers and lash adjusters can spin to 10k rpm without fail. The weakest point of 2v valvetrain is the springs & retainers.

Although, at high rpms the stock lash adjusters can benefit from a little better oil flow.

Hoss, if you're going to spin to 6300, make sure you upgrade your Harmonic Ballancer. Do a quick Wiki search for HB and read what it says. You'll quickly realize why I think it's so important.

I think its the more evenly distrbuted valve set up, i don't think the valves from the GTs differ much, atleast from the early cobras, if i recall correctly both valves are the same size, theres just more of them, hence distribution.