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Author Topic:   IMCA Stock Car Heads
ZR1RACER
Dirt Roller

Total posts: 10
posted April 11, 2005 01:21 PM  
If I thought someone could claim my motor, Id have 305 heads or some 882's on it, but chances are I wouldnt be in the top to get claimed anyway, The humps and vortecs are kind of spendy to give up.How much is the stock car claim ?

istock59
Dirt Forum Champ
Total posts: 501
posted April 11, 2005 06:59 PM  
I don't think you'll get it done with 305 heads around here anymore. At least not racing against Dart 49cc, World Prod, Humps and Vortecs.

ZR1RACER
Dirt Roller

Total posts: 10
posted April 12, 2005 01:23 PM  
ZR1, I see by your profile that you're from western IA. Before building a set of 305 heads, go walk around the pits of your local tracks and see what's being run. I think you'll find that humps are the minimum you'll need.

Sure, you get more compression with a 305 head. But you get even MORE compression with a 49cc Dart head!

Istock66
unregistered Total posts: 501
posted April 13, 2005 02:32 PM           send a private message to istock59   Edit/Delete Message   Reply w/QuoteBBBBBB
humps at least..

to run 305 heads and get them to flow you need to port the runners and open up the chambers to about 64cc to unshroud the valves.

you cheapest best bet would be vortecs.

screw in studs, no plates, stock diameter springs, oem valves and a valve job.

ZR1RACER
Dirt Roller

Total posts: 10
posted April 13, 2005 05:50 PM  
No you need a stock valve job, and screw in studs. And run self aligning rockers.

They are better than humps oem.

humps flow at best 165 intake
vortecs 185-90

If you put bigger valves your spending more money the stock valves are a good piece.

If you want some humps email me and Ill sell you some Ive got 13 sets, and some done sets.

Im near omaha.

mod99l
Dirt Roller

Total posts: 12
posted April 13, 2005 10:46 PM  
I would go with humps if you go vortecs you will have to buy a new intake

ZR1RACER
Dirt Roller

Total posts: 10
posted April 14, 2005 02:11 PM  
Istock66

I might be interested in some humps if you have some for the right price. You already have my email. You emailed me last week about some 3 speeds on dirt drivers. Drop me another line and let me know what you want for stock sets and complete sets.

I'd also like to look into some vortecs and find out a little more about them. Do you have to buy a special intake for them or can you make a normal 4 bbl intake work?

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