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Running 185 AFR'S?

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Old 02-07-2010, 06:40 PM
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john89gt
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Default Running 185 AFR'S?

Anyone running a stock bottom end, E303 cam and 185 AFR's ? Just wondering about clearance issues on piston to valve?
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Old 02-07-2010, 07:18 PM
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5.0kid
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as long as you have 1.6 rockers. I believe you are good with the e cam
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Old 02-07-2010, 08:33 PM
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john89gt
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I do have 1.6 rockers. Running gt 40 heads now. I want to upgrade but would like to go with the afr 185's so i could use them on another motor later.
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Old 02-07-2010, 09:22 PM
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Im pretty sure that the e cam is not high enough in lift or in duration to have anyproblems but the 185s do use bigger valves. Its always smart when putting on new heads to check valve to piston clearance.
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Old 02-07-2010, 11:19 PM
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i think a lot of guys here will suggest upgrading your cam, too. im not all that knowledgeable, but from what ive researched, letter cams are pretty outdated. you'd get much better results with something more suited for that new set of heads you're thinking about installing.
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Old 02-07-2010, 11:32 PM
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Originally Posted by g2_5point0
i think a lot of guys here will suggest upgrading your cam, too. im not all that knowledgeable, but from what ive researched, letter cams are pretty outdated. you'd get much better results with something more suited for that new set of heads you're thinking about installing.
Yes letter cams suck i have a B cam n hate it.
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Old 02-08-2010, 07:41 AM
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john89gt
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Yes the E cam was one I just happened to have a the time. So now i'm looking to get the best hp for the dollars. I could still upgrade the cam I just thought I could find someone that might be close in the same range as mine and running 185's
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Old 02-08-2010, 07:54 AM
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5.0kid
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hit up sbftech or nmra theres lots of cars running 185s around. Look for a Comp or lunati. Contact Ron at Bluecollarperformance.com 1-877-999-0391 he will be able to help you out with what your looking for or with any questions. Tell him Alex sent you.
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Old 02-08-2010, 08:48 AM
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The following was a case of a B-303 setup with AFR 185's.......



The issue with OEM style inline valve heads and 2.02" intake valves, is a loss of radial PtV clearance. If you want to avoid such a possibility + have a better performance gead design, a set of 170 or 190 fac's TW heads would provide more in terms of PtV clearance due to their relocated valves and different valve angles.
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Old 02-08-2010, 01:22 PM
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Ouch that wasn't good. I got your other message Joel5.0 I just haven't had time to sit down and write you back. I guess I might have to look at those TFS 170 or 190. Could I run the 190's. I just don't want a small head and have to buy another set later?Maybe some go fast spray. You know 306 now , maybe 408 next! When I get time I'm going to pull one of those gt 40's and see what kind of notch relief are in those TRW's. I remember they had a little bit but not full blown like I see on my buddy's ride.
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