explanation of 1.73/1.8rr's with/without custom cams? - Mustang Evolution

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Old 12-25-2003, 09:33 PM   #1
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explanation of 1.73/1.8rr's with/without custom cams?

from what i have gathered, the 1.8 rr's are for people that just want some bolt on power but is not ideal for power with a new cam. doesn't the 1.8's just bandaid a stock motor to make it feel like a bigger cam? someone help me understand this please.
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Old 12-25-2003, 09:36 PM   #2
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from me and brandon tlaking:

SVT Brandon (9:34:30 PM): and EE knows they put 1.8s in the kit, so they account for it and grind the cam more mild
V6PowerStang00 (9:34:50 PM): why not stick with 1.73's?
V6PowerStang00 (9:35:04 PM): that'd net a few more horses wouldn't it?
SVT Brandon (9:35:11 PM): no
V6PowerStang00 (9:35:30 PM): or 1.8 + mild cam = 1.73 + more wild cam?
SVT Brandon (9:35:55 PM): yup
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Old 12-26-2003, 02:30 PM   #3
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kinda-sorta...

I use the 1.8's on cam lobes that have less lift than I like.
For heads that flow well higher up, use them. They add
about .020" more lift than 1.73's and about 1-2* more
duration at the valve, but the valve seats and peaks at the
same times as with 1.73 rockers. If your springs can handle
it, 1.8's are good with any cam.
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Old 12-26-2003, 02:43 PM   #4
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I really think the 1:8 roller rockers added to my problems with my 94 V6, if I had used them with a stock cam, or use the cam with 1:73s, I think I would have had less troubles. It was a real PIA to shim them right too.
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Old 12-29-2003, 03:14 AM   #5
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Quote:
If your springs can handle it
The ultimate question.
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Old 12-29-2003, 11:18 AM   #6
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Quote:
Originally Posted by V6PowerStang
from me and brandon tlaking:

SVT Brandon (9:34:30 PM): and EE knows they put 1.8s in the kit, so they account for it and grind the cam more mild
V6PowerStang00 (9:34:50 PM): why not stick with 1.73's?
V6PowerStang00 (9:35:04 PM): that'd net a few more horses wouldn't it?
SVT Brandon (9:35:11 PM): no
V6PowerStang00 (9:35:30 PM): or 1.8 + mild cam = 1.73 + more wild cam?
SVT Brandon (9:35:55 PM): yup
BULL BULL BULL A nice performance cam is way better peformance gain than just adding lift. it is just krazy to think otherwise. Hell if you are a do it yourself kind of guy a cam is cheaper than 1.8 rockers period !!!
No contest !!!!!
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