I found my High Performance Pontiac magazine that has an article on SLP's 500-HP stroker kit and installing it into a TA. They write showing the stock cam and the new cam. They say the stock cam is 215 Intake/227 exhaust duration, 119.5 LDA, and .500" lift. Is this accurate? I have a 2001 Formula and I know that I have a different cam than the previous years.

 

I have NO IDEA where they got 215/227 for a stock cam! <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> The '01 and '02 LS1's switched over to the same cam as the truck. Thunder Racing put one on the cam doctor, and it speced out to 192/190, .455"/.465", 115 LSA. You can see why these cars have a lot to gain with a nice cam swap. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> I THINK the '98 specs were 202/208, .500"/.500", and around a 117 or 118 LSA. I know that the .500" lift is right, and the duration is very close to what I quoted, if not correct.

 

i thought it was 198ish/201ish at 117.5 (for the 98)

<small>[ July 18, 2002, 10:28 AM: Message edited by: Ryan ]</small>

 

I belive its

2001-02 LS1 C5 (also 6.0L truck)
198/208 .500/.500 LSA:115.5
Base circle: 19.7mm

if you wanna argue real hard Ill go out in
the garage, and pick up my stocker cam, but
is there #'s stamped on it anywhere ??

 

Do you have a micrometer? Measure the circle base and then measure the lobe. There is the lift. Next, do you have a degree wheel and a dial indicator with a magnetic base? You can measure the opening and closing of the lobes at .050" and note the degrees and multiply by 2. There is your duration. I would do it myself, but I haven't torn my engine abpart yet.

 

I'm positive that the '01+ cars do not have .500" lift. All I do know is that a cam doctor doesn't lie. The specs listed above are correct; feel free to contact Thunder Racing if you'd like to hear it for yourself.