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Posted

I've been wanting to start an ambitious project of scratch building a modern top fuel dragster...1/4 scale ?  With my access to 5 axis machining centers, 3d printers and time I'm mentally ready to start. ? Starting is the hard part, then time.  Time will come but what I'm looking for if anyone may know where I might find "dimensionals" or prints for a top fuel chassis? Or even good images I can scale from?  

I've already been practicing on a LS3 engine.

Any help is appreciated, thank you in advance!

Tom

 

 

 

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Posted

Nice work on that engine block! Check out the different chassis manufacturers sites. Often there are drawings from which you can extrapolate needed dimensions--for instance, pretty much any modern top fuel chassis is going to have a 300" WB. You can base your plans from there, as I am sure you are aware, given that engine block you just made! I know that Mark Williams sells blueprints for $90, but...

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Posted

Teams like John Force Racing, Don Schumacher Racing and Kalitta Motorsports build chassis in house, and some teams buys them from McKinney, Hadman, Morgan Lucas Racing/Lucas Fabrication and from the other larger teams who build chassis in house.
But you can get some measurements from the "modern era" Revell Top Fuel Dragster kits wich have a recent chassis, not the most modern but pretty much what they use today except for some alterations done since they were up to date.
A modern Nitro engine for Top Fuel and Funny car is based on the old Chrysler 426 Hemi design, same dimentions, bore spacing and so on with some approved alterations and strengthening and you can get dimentions from the Revell Top Fuel kits there too.
All engines used in these classes are machined billet aluminum with no water jackets and steel sleeves for the cylinders, the heads are also machined billet aluminum with dual spark plugs per cylinder.
I'm sure there are drawings and 3D files for these parts but I'm not so sure the engine block manufacturers like Alan Johnson Performance Engineering (AJPE), BRad Andrerson Engineering (BAE), Keith Black and others, are letting them go as easy as you from these files can do a copy of their engine blocks and sell to anyone.
The 14-71 super chargers are made by Kobelco, BME, DMPE, PSI and others but based on the GM Roots design for two stroke diesels but with a longer case and rotors, Ignition is dual MSD Pro Mag 44's.

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