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Author Topic:   Power
cobradude30293
Dirt Roller

Total posts: 10
posted April 05, 2004 02:13 AM  
Please help....I'm a rookie with a metric and need more power. Now I've got a 350 with 487x heads, quite a bit bigger cam, & the 2g 2bl carb. It's quite a bit faster but it's still no match for the power of some of the front runners in my class. What else can I do for more power while staying
(at least reasonably) close to the rules?
any help anyone could give would really be appreciated....thanx

[This message has been edited by cobradude30293 (edited April 05, 2004).]

daddyrich
Dirt Full Roller

Total posts: 33
posted April 05, 2004 06:56 AM  
if allowed - swap to the vortec heads. you will have to get another intake though. its an instant 20 - 30 hp gain.

Raz_900
Dirt Forum Champ
Total posts: 635
posted April 05, 2004 09:31 AM  
Or angle mill the heads you have for more compression. If you're running a big cam, flat top pistons and 76cc heads the motor will be a slug coming out of the turns.

cobradude30293
Dirt Roller

Total posts: 10
posted April 06, 2004 01:00 AM  
Oh yeah, I forgot, my heads are angle milled. I think he said they were 60 thous.

And I would love to be able to run vortec heads, but they're not allowed...

25JHenry
Dirt Full Roller

Total posts: 73
posted April 06, 2004 01:51 PM  
Try more gear. How many RPM's are you turning now????

rico 08
Dirt Forum Champ
Total posts: 1139
posted April 06, 2004 01:58 PM  
I've never ran a 2bbl but i would think being that restrictive you would want alot of compression,that's what the nascar boys did before they mandated a maximum compression rule.

eaton89
Dirt Freak

Total posts: 268
posted April 06, 2004 11:19 PM  
Have you done any portmatching or port work. How about valve springs and valve sizes. I run a 355 flat top piston 186 head 64 cc, port matched and valve springs matched for the cam. Cam is only a 495 lift comp cam, use a stock 4barrel carb and intake. It easily turns 6500 and runs with the 383 guys at our track. Make sure the timing is right, use a better ignition or coil, run a spacer under carb, and check jetting. How about headers or manifolds. Their are a lot of little thing to get a little more out of everything you already have. Just have to work at it. Check with a good tech on cams and have one matched for your engine and track size and final gear. Thats probably the best info you can get(cam). Cam is a big deal. If you have the wrong one its going to slow you down. Bigger isnt better in this department. If you dont have the right stuff to run the bigger cam than your wasting horse power. Get one that matches your complete combo. Just because your buddy is using it doesnt mean it will work for you. That was one thing I did last year and had a few guys ask what the **** I did to the motor, nothing just replaced the wore out cam. I'll never tell.

eaton89
Dirt Freak

Total posts: 268
posted April 06, 2004 11:22 PM  
I'm still learnig how to use those smiles. I wanted the small one. I'm getting it figured out tho.

cobradude30293
Dirt Roller

Total posts: 10
posted April 09, 2004 02:57 PM  
The only thing is I'm trying to stay as legal as I can. Port matching is not allowed. The cam is one that a cam tech recommended for what I'm running, but you did give me a few good ideas to work on. Thanks for the info...

oh yeah, if you've got any other pearls of wisdom, I'm all ears......

thanx

cobradude30293
Dirt Roller

Total posts: 10
posted April 09, 2004 02:59 PM  
Oh yeah, my final drive is 608 (near as I can tell anyway) and I'm turning right at 5500...We're on a 1/4 clay oval.

Jesterondirt
Dirt Full Roller

Total posts: 56
posted April 09, 2004 03:33 PM  
you might have plenty of power just make sure its all getting put to your rear wheels

    

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