347 cam choice - Vintage Mustang Forums

 
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post #1 of 12 (permalink) Old 09-24-2002, 02:34 PM Thread Starter
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I have searched the forum for what cam people are using with a 347, could't find anything. If you are running a 347, I would appreciate your feedback..I am leaning to the comp cams 280H.
Thanks,
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post #2 of 12 (permalink) Old 09-24-2002, 02:53 PM
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Roller or flat tappet? RPM range you plan to use? carb and intake manifold? Stock head? Looks like your runing very steep gears and a 5 s/p.

Sounds like you have a great set up, just need more details.

66 Fastback GT with long rod roller cam 302 and T5 trans. On the street and still needs a lot of work.
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post #3 of 12 (permalink) Old 09-24-2002, 03:29 PM Thread Starter
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CAM.
I plan on using roller tappets, I am running a 1406 edelbrock carb, edelbrock rpm performer heads, intake, and cam. I switched from 3:50's to the 3:89 after the first track event. I am using a T5Z speed,,which I hope in the end will hold up..
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post #4 of 12 (permalink) Old 09-24-2002, 03:37 PM
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My 347 is going to use a 236/.540" lift hydraulic flat tappet cam. It will be slightly larger on the exhaust side. I'd like to go to a solid roller one day, but funds did not allow for this build.

The 280H cam isn't a bad choice for that combo but it isn't a roller cam. I'd also try and get a little more lift. If you're using roller tappets, the 274HR looks nice if you have the P/V clearence and valve springs for it.


1966 Coupe build for SCCA Autocross
347 V8 - Tremec TKO - ORP Suspension
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post #5 of 12 (permalink) Old 09-24-2002, 04:14 PM Thread Starter
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2BAV8,
Thanks I didnt notice that was a flat tappet cam!! I will check out your suggestion.. Thanks1
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post #6 of 12 (permalink) Old 09-24-2002, 06:23 PM
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I'm not running a stroker but I do have a roller cam. Here are some sugestion for power in 2,000 - 5,500 RPM with a 6,200 RPM redline. (assuming stable valve train) The below table lost its formating but I hope you get the idea
Advertised Duration around 224 - 230
Lift around .510
LAC around 112

Advertised Duration Duration @ 0.050" Valve Lift Lobe

Company Part Number Intake Exhaust Intake Exhaust Intake Exhaust Center

JBA 804 265° 265° 222° 222° 0.533'' 0.533'' 110°

Ford Motorsport / SVO M-6250-B303 284° 284° 224° 224° 0.480'' 0.480'' 109° / 119°

Ford Motorsport / SVO M-6250-X303 286° 286° 224° 224° 0.542'' 0.542'' 107° / 117°

Competition Cams 280HR 280° 280° 224° 224° 0.560'' 0.560'' 110°

Ford Motorsport / SVO M-6250-F303 288° 288° 226° 226° 0.512'' 0.512'' 110° / 110°

Competition Cams 286HR 286° 286° 231° 231° 0.598'' 0.598'' 110°

Crower 15512 282° 286° 222° 228° 0.496'' 0.512'' 112°

Ford Performance Solutions 4018 289° 299° 222° 232° 0.510'' 0.534'' 112°

Wolverine / Blue Racer WG1087 289° 299° 222° 232° 0.510'' 0.534'' 112°

Competition Cams 284AHR 284° 290° 224° 230° 0.533'' 0.544'' 114°

Competition Cams 274HR 274° 280° 224° 232° 0.555'' 0.565'' 112°

Competition Cams 280HR 280° 286° 224° 230° 0.560'' 0.598'' 112°

Ford Performance Solutions 4019W 272° 282° 225° 234° 0.539'' 0.565'' 112°

Crower 15513 288° 298° 228° 234° 0.512'' 0.531'' 112°


66 Fastback GT with long rod roller cam 302 and T5 trans. On the street and still needs a lot of work.
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post #7 of 12 (permalink) Old 09-24-2002, 07:02 PM Thread Starter
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Damn Cam!!
Thanks for the info!!
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post #8 of 12 (permalink) Old 09-24-2002, 09:48 PM
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In case you haven't looked yet, Fordmuscle.com has a "Dyno Pages" forum. There are a few 347 dyno numbers posted there along with the combinations used.
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post #9 of 12 (permalink) Old 09-24-2002, 11:30 PM Thread Starter
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Joe,
I like you bio!! Haven't checked the site out but will. Thanks.
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post #10 of 12 (permalink) Old 09-25-2002, 03:24 AM
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I'm running a 284HR comp cams roller in my 342 (std 347)

224 duration and .550 lift both sides.....114 lobe sep
also run the comp cams roller rockers theyll free p some power.

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post #11 of 12 (permalink) Old 09-25-2002, 04:53 AM
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Just curious how that 284HR performs? Is the low end still pretty good? Can't wait to actually use that extra 40 something extra cubic inches,


1966 Coupe build for SCCA Autocross
347 V8 - Tremec TKO - ORP Suspension
www.geocities.com/2bav8
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post #12 of 12 (permalink) Old 09-25-2002, 09:51 AM Thread Starter
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Capony,
What trans, rear axle are you running? Also ignition? Have you had your car dyno'd?
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