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Reload this Page anybody running XR276HR-12 cam and have a 383?
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Old 04-10-2007, 10:46 AM   #1
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anybody running XR276HR-12 cam and have a 383?
i am curious if anybody else is using this cam and afr195cc heads as to what their dyno is. Mine won't be dyno'ed until later this week and I am curious to see what others have with their combo
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Old 04-10-2007, 01:32 PM   #2
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Re: anybody running XR276HR-12 cam and have a 383?
I am curious about your dyno numbers.
Please keep us posted.

I have a kinda similar combo to yours
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*old 383 combo*11.00@125 - 1.55 60ft, 145hp n2o
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Old 04-12-2007, 08:16 AM   #3
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Re: anybody running XR276HR-12 cam and have a 383?
I've got what is essentially the next size cam, a 230/236 112LSA, and a Miniram intake, but otherwise have pretty much the same shortblock. My dyno runs were 396 RWHP and 383 ft.lb. You should have a higher torque number by 12 to 20 ft.lb, and slightly less horsepower.
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Old 04-13-2007, 03:02 PM   #4
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Re: anybody running XR276HR-12 cam and have a 383?
awesome.... that is what i was hoping for more toward 400 than 350 rwhp and gobs of torque
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Old 04-15-2007, 07:12 PM   #5
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Re: anybody running XR276HR-12 cam and have a 383?
sadly i only put down 310 rwhp to the wheels....at 5000 rpms bc i didnt upgrade the fuel pump or injectors but my torque is 350 ft/lbs and is a nasty lil torque curve.....motor has 500 miles on it hehehe
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Old 04-15-2007, 11:05 PM   #6
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Re: anybody running XR276HR-12 cam and have a 383?
Quote:
Originally Posted by 89formula350b2l View Post
i am curious if anybody else is using this cam and afr195cc heads as to what their dyno is. Mine won't be dyno'ed until later this week and I am curious to see what others have with their combo
xr288 is a perfect match for that combo....im not guessing either!!!
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Old 04-16-2007, 01:58 PM   #7
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Re: anybody running XR276HR-12 cam and have a 383?
Did you log fuel pressure and air/fuel ratio? Did it lean out on the top-end? You shouldn't have run out of cam for another 800 RPM or so.
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Old 04-16-2007, 02:47 PM   #8
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Re: anybody running XR276HR-12 cam and have a 383?
o yeah leaned out at 4700ish rpms.....so new fuel pump and 30lbs ford racing injectors going on soon
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Old 07-19-2007, 05:11 PM   #9
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Re: anybody running XR276HR-12 cam and have a 383?
new dyno in sig.....if it aint one thing.....its another
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Old 08-26-2007, 04:37 PM   #10
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Re: anybody running XR276HR-12 cam and have a 383?
Here's my 383 with this cam.

341rwhp/ 353rwtq
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Old 08-27-2007, 09:57 PM   #11
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Re: anybody running XR276HR-12 cam and have a 383?
Jvette, did you finally get that thing dyno tuned all the way?
----------
thats ab the same numbers i got with a slipping tranny and non lockup converter
Last edited by 89formula350b2l; 08-27-2007 at 09:57 PM. Reason: Automerged Doublepost
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Old 08-28-2007, 05:34 PM   #12
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Re: anybody running XR276HR-12 cam and have a 383?
Not yet. It's my daily driver so no rush. I will tune it at the track when it cools down!

John
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Old 08-28-2007, 05:34 PM
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