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Eb xr8 cam help? 

 

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 Post subject: Eb xr8 cam help?
Posted: Fri Sep 06, 2013 6:22 pm 
Parts Gopher
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Ride: EB Falcon S XR6

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Just wondering what cam is right for an eb xr8.
Hydraulic flat tappet design for factory flat tappet equipped engines.
Or
Retro fit hydraulic roller design for flat tappet equipped engine?
Both for the 302.
If you want to look at them just type in these item numbers on eBay.
181079621927 - that's the first one.
200573191293 - that's the second one.
Cheers heaps for any help!
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 Post subject: Re: Eb xr8 cam help?
Posted: Fri Sep 06, 2013 6:36 pm 
Getting Side Ways
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Neither.
You need an actual roller cam.

 

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 Post subject: Re: Eb xr8 cam help?
Posted: Fri Sep 06, 2013 6:45 pm 
Parts Gopher
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Ride: EB Falcon S XR6

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Oh ok I thought the eb v8's were roller follower with flat tappets, I was guessing the second cam but I'm lost now lol.
Are they completly different to the ole Windsor's?
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 Post subject: Re: Eb xr8 cam help?
Posted: Sat Sep 07, 2013 9:35 am 
Getting Side Ways
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They're not completely different but they are equipped with a hydraulic roller cam & followers.

A cam swap by itself will not yield huge results due to the poor flowing heads, intake & exhaust manifolds & small throttlebody. An AU top end (or better still complete engine) would give better gains & allow more growth in the future with its better heads (GT40Ps), Explorer intake and 65mm throttlebody.

But if you are adament on a cam swap check out the Comp Cams XE264HR or XE270HR

 

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 Post subject: Re: Eb xr8 cam help?
Posted: Sat Sep 07, 2013 11:34 am 
Parts Gopher
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Ok thanks for all that info.
I was just after one of those specific cams for the chunky idle but got confused because i was getting told the cam will fit then it wont :? was gunna chuck all the gt40ps and explorer intake on as I went but I'm having trouble finding the explorer complete intake. People either wont post it or they want a crazy price.
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 Post subject: Re: Eb xr8 cam help?
Posted: Sat Sep 07, 2013 8:03 pm 
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Get a Comp Thumper 31-600-9 or rougher still a 31-601-9 ground on std roller base circle and you'll have a lumpy idle. Probably have a hard time tuning it with their 107deg lobe sep angles but you'll get your lumpy idle.
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 Post subject: Re: Eb xr8 cam help?
Posted: Sat Sep 07, 2013 8:47 pm 
Getting Side Ways
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Or a 35-600-8 & not have to change the firing order. I think with a QH you could actually get it running acceptably..

Just for a comparison this is the XE270HR-14 (35-351-8) in a 5.0L AU

http://static.photobucket.com/player.sw ... eb8a18.mp4

 

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200kw 5.0L, T5, Koni shocks, King S/Lows, Whiteline swaybars, DBA 4000 rotors, Acron CAI, 80mm Accufab TB, Difillipo headers & cats, twin 2.5" & Aerochambers, 3.91 LSD.

To Come:
Long rod 306, TFS 11R 205cc heads, SHP camshaft, 1.72 R/R, ported TFS Box R, 400hp NX SHO kit...

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 Post subject: Re: Eb xr8 cam help?
Posted: Sat Sep 07, 2013 9:37 pm 
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there you go wrong prefix I had:)
I'd get -9 core though unless you run a comp polymer gear.
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 Post subject: Re: Eb xr8 cam help?
Posted: Mon Sep 09, 2013 6:11 pm 
Parts Gopher
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So the hydraulic roller thumpr cam 35-600-8 to suit 1986-1995 302 should all fit????
Just buy the whole kit from comp cams?
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 Post subject: Re: Eb xr8 cam help?
Posted: Mon Sep 09, 2013 6:49 pm 
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ahow6235 wrote:
So the hydraulic roller thumpr cam 35-600-8 to suit 1986-1995 302 should all fit????
Just buy the whole kit from comp cams?


Yes but If you get them to grind it on a std 5.0 roller base circle you won't need non-std pushrod length. If you buy it as is you'll need slightly longer pushrods to make up for the reduce base circle of these retrofit roller cams.
Either way you be better to get a complete kit with springs, pushrods retainers etc.
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 Post subject: Re: Eb xr8 cam help?
Posted: Tue Sep 10, 2013 11:31 am 
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Ride: EB Falcon S XR6

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Ok thanks heaps, now I reckon I'm on to it. If I get them to grind it on the 5.0 std base circle and get the kit with springs etc. will it be safe without strain to run it with the standard pushrods already in it?
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 Post subject: Re: Eb xr8 cam help?
Posted: Tue Sep 10, 2013 6:59 pm 
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I wouldn't run std. pushrods with anything over .500" besides you'll probably find the deal is better if you the whole kit with everything required. Also specify a -9 core which is the steel cam not the -8 which is the austempered iron job and not as good. Or like I said use the Comp polymer cam gear with the -8 core.
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