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Author Topic:   hydro cams
racer17j
Dirt Forum Champ
Total posts: 5390
posted May 03, 2005 09:21 PM  
I have the exact same motor stats as you, exactly 9 to 1, stock 2 barrel and exhaust, 487x heads, and I have been very happy with Howards Cams. I think the part number is 112681. .490 and .495 lift and 235,236 duration @ .050 with a 106 lobe center. I have 1.6 rockers on the intake as instructed by them. They were pretty helpful when I talked them.

[This message has been edited by Speedracer92 (edited May 04, 2005).]

waltonjr1
Dirt Forum Champ
Total posts: 516
posted May 05, 2005 08:49 AM  
Im running the 187r in my 408 with vortec heads. Im happy with its performance. Top three every week.


racer17j
Dirt Forum Champ
Total posts: 5390
posted May 05, 2005 07:03 PM  
You may need a cam with less duration for your engine and head combo. This cam has alot of duration for its lift. When I ran my 358, The cam I ran had around 230 duration and 490 lift and made alot of power.


supwitchew
Dirt Maniac

Total posts: 122
posted May 06, 2005 07:49 AM  
I second the Howards cam. I had one in my Ford and liked it. I now have one in my SBC (same cam as Speedracer92). Seems to make plenty of power.

[This message has been edited by supwitchew (edited May 06, 2005).]

Speedracer92
Dirt Full Roller

Total posts: 70
posted May 06, 2005 09:31 AM  
The cam from Howards is pretty close to what Walton was saying for numbers. It pulled good off the corners, especially strong on restarts. I only turn maybe 6000 at the most but I can tell you it pulls strong all the way to 6000 and should go a ways above that. Won the track championship with that cam last year and wouldn't run anything else.

racer17j
Dirt Forum Champ
Total posts: 5390
posted May 06, 2005 04:44 PM  
Hopefully you can find the top end you want with the Crane cam since you have higher gears. If you find that you are loosing ground coming out of the corners, you still might want to consider a cam with a narrower lobe separation than that 72. In case you are interested, and since you are budget minded like most of us, Elgin has a cam with the specs that speedracer and Walton suggested. Just a thought. Good luck!

racer17j
Dirt Forum Champ
Total posts: 5390
posted May 07, 2005 10:05 PM  
before i had a 4.90 and now i'm up to 5.67 so according to the calculator that should put me right at 6700 and thats where i want to be before it would only turn 5800 but i had that 4.90 and still has stock valve springs on it so that will make a difference right there . like i said we have had alot of luck with that 72 so i'm gonna go back to what i know will work . that and the fact that one of my buddies will trade me his old one for some part i have can't beat that lol

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