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In the early 1990's , I raced a 1973 duster. Used 318 lower end, with 340 heads, Edelbroch LD340 intake and (I don't remember which purple camshaft. It ran 13.08 et. At the end of a year , I put a cheater system on it, with the larger jets. I think it was a 250 shot. I hit it right from the...

Car 1973 Dodge DartSport Weight 2575 Gear ratio 4.30 Tire diameter 32" RPM through trap 6500rpm MPH through traps 138.79 ET 9.513 Engine CID 505 Head Type Brodix B1/BS Valve size Head Work Ported and polished Cam Manufacturer Crowler Cam...

My new time is always below my signature picture!!

Here is a KD tool that I used last spring to change mine. You can see the rope sticking out of the spark plug hole.

New best: At Bracket Finals Division 1 NHRA, October 2005. 9.787 et, at 137.61mph

Car 1973 DartSport - Alston chassis Weight 2755 with driver / 2575 with out driver Gear ratio 4.30 Tire diameter 33" RPM through trap 6500 rpm MPH through traps 137.61 ET 9.787 Engine CID 446 Head Type Brodix - Valve size Head Work stock out of box Cam Manufacturer...

I have a custom built set of headers. The Brodix heads have the ports moved slightly from the stock cast iron heads.. Ports are up a little, out to the side of the car a little, and a slightly straighter angle up and down. I had to have 2 tubes on each header modified a little.

The 906 heads were heavily ported , milled, and also the quench was welded in and then machined flat. My 906 heads , started to seep water on the outside, right below the header flange. I got them hot last year ,before I worked on the cooling system.

The ports moved up about 1/2", moved out about 1/2" to 1", and also , the exhaust to header flange is more straight up and down, not on an angle, like on the cast iron head.

The heads have been on the car for 3 weekends of racing. I finally got back to MapleGrove Raceway this weekend, so I could weigh the car and compare its et's to earlier this year at the same track, with similar weather conditions. My old heads were 906 heads, not 915 heads as I stated earlier...

I just read about those heads in a Mancinni Racing sale flier I just received today. It would be nice if they did fit as stated, in their ads. The Brodix B1-BS heads that I just installed, had a little more port location change, than they advertised. I even called Brodix and talked to a tech guy...

A little info on the heads. http://www.brodix.com/B1%20Big%20Block.html

I ordered a set of Brodix B1-BS aluminium heads on monday. 2 to 3 weeks untill delivery. I had a head gasket blow after 3rd round on sunday, on my 440, with cast iron 915 heads. The gasket blew out the back of the head towards the firewall. I figured I would up grade to the Brodix heads, while...

Mine have 7/16 fine ARP bolts in my converter. I loctite mine . On my old race car I didn't loctoite them , and they used to come loose. I use the blue loctite, and they don't come loose. I would call ARP and ask them , tell them , that they are the torque converter bolts, and see what they say...

Car - 1973 Dodge DartSport Weight - 2600, 2770 with driver Gear ratio - 4:88 Tire diameter - 33" RPM through trap - 6400 MPH through traps - 129.98 ET - 10.167 Engine CID - 446 cu. in. Head Type 906 cast iron Valve size Head Work - ported and polished Cam Manufacturer...

10.167 et , at 129.98mph , with 1.360 - 60 foot time..... April 10,2004

I will keep updated as times and mph change. April 10, 2004 Best Et-10.167 , MPH-129.97 ,60-foot - 1.360, 65 Degrees air temp. May 22,2004 Best Et-10.396 ,MPH-125.63 ,60-foot - 1.388 WON 2-Rounds- First with this car...