ZR-1 Net Registry Forums - View Single Post

Pete · 03-31-2013

Ron,sometimes my brain is faster then my one finger typing.

I'm just speaking in general,not directly to you, just throwing out the way a stock LT5 chip programing works.

Paul don't worry you don't have to put your secondaries back in to find out.

From the old thinking bigger ports slow down velocity then Pauls ZR-1 and every other top end ported lt5 should loose more TQ/power.

Like i said in my previous post a pure stock Z secondaries are open anytime you go WOT no matter the RPM.

Stock LS3 has 260cc intake runner with no secondaries drives just fine,some CnC them to 275cc, stock LT5 head is a whole lot less from what i can remember 210-215 it shouldn't have any drivability issues we also have better valve angle.
Like i said i'm putting this stuff out from memory it's been a while since i did the R&D on the LT5 stuff (10 years).

The LT5 was ahead of it's time heck most LS stuff today came from LT5 development.
Pete

03-31-2013	#6
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,667	Re: secondarries Ron,sometimes my brain is faster then my one finger typing. I'm just speaking in general,not directly to you, just throwing out the way a stock LT5 chip programing works. Paul don't worry you don't have to put your secondaries back in to find out. From the old thinking bigger ports slow down velocity then Pauls ZR-1 and every other top end ported lt5 should loose more TQ/power. Like i said in my previous post a pure stock Z secondaries are open anytime you go WOT no matter the RPM. Stock LS3 has 260cc intake runner with no secondaries drives just fine,some CnC them to 275cc, stock LT5 head is a whole lot less from what i can remember 210-215 it shouldn't have any drivability issues we also have better valve angle. Like i said i'm putting this stuff out from memory it's been a while since i did the R&D on the LT5 stuff (10 years). The LT5 was ahead of it's time heck most LS stuff today came from LT5 development. Pete __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage Last edited by Pete; 03-31-2013 at 10:14 PM.