I have 1.9 and 1.7 roller rockers. I also have #90 springs and retainers.can I use them on my gtp it s a 2000 l67 thanks

-- Mon Oct 03, 2011 2:24 am --

Also what pulley with headers 3inch full exhaust high velocity throttle bodyand hp tune I got the 104s and 1801 stat hp tune and 3.5 pulley and intake now

Go with the 1.9's unless you have a cam. As far as a pulley i think you could safely tun a 3.3'. Or a 3.4 with lots of timing might be better.

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DIY intake-HV3-3" catless dp-180 tsat-DIY shift kit-murphy custom tune

try a 3.3 and scan for KR

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Depending on how much timing you run, the 3.4 is your better bet. I was on stock manifolds, with 1.84 RRs, and ran 20* of timing with a 3.4" pulley KR free. Your mileage will vary, especially variant on the tune.

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One Big Ass Mistake America

IIRC the split ratio rocker were for the NA cars only ... I don't think I've ever seen them used on a L67.

Before I went to the sx1 cam, I had the 1.84 and was able to go to 3.5 pulley, when I added the SLP headers I was able to run the 3.4

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Under Construction

A set of 1.9 rockers would be better, but you can use the split ratio on a L67. I'd suggest swapping the intake and exhaust rockers.

For a non-supercharged car, the split ratio rockers use the higher ratio on the intake, and the lower ratio on the exhaust, trying to get as much air into the engine as possible.

With a supercharger forcing air into the motor, you'll get air in pretty fast anyway, but will need help to get the air out. So use the 1.9 rockers on the exhaust, and lower ratio on the intake.

the N/A cars use them to help the intake side take in more air the L67 cars have a giant spiny thing that helps them out lol

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Thanks guys I gotta use them im stuck with them now but after its altogether ill let you guys know the turnout

-- Fri Oct 21, 2011 12:08 am --

One more favor guys can someone put pics of the heads showing which rocker is the exhaust and which is the intake on a l67 thanks again everyone for your help I appreciate it

The rocker that sits directly above the spark plug is the intake valve rocker, and the one that sits directly above the exhaust manifold/header tube is the exhaust valve rocker. They line up straight vertically so it is pretty easy. And they alternate. Intake/exhaust/intake/exhaust/intake/exhaust.

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What's "them"? If you're doing a 1.7/1.9 split on an L67, I'll bet a dollar that you see little gains (1.7 intake side 1.9 exhaust, this also sort of negates the the full flow potential for headers. You also have to remember that S/C adds heat so you don't want to bottleneck the intake side and cause even more heat buildup) or no gains or decrease due to increase in KR (1.9 intake side, 1.7 exhaust). But I'm also guessing that you don't have a baseline dyno before doing this so butt dyno would be the only thing to go off of.

Stretch's explanation is good. Once you have the valve cover off it's pretty hard to mess up which rocker/valve is which. Just look at the exhaust mani or even the injector bosses to figure out which valve is which.

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Dubs:00 VW GTI VR6, Low and Slow 91 VW GTI 8v, Shave the Bay!! 91 VW Cabriolet 8v, bitch Basket
GP's:04 GP GT, Past now G-Ma's Girlfriend's 97 GP GT, "Project Pink Power"

you want to sell your 1.7's?

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