a BBC will not fit into a teener if you want it to even be close to a teener when you are done... it's just too big (now i sound like my girlfriend
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You can get 650hp out of a SBC fairly eaisly (might have to run race gas or methanol, but hey... it's only $$$$)
There's a sprint car racer out here selling a 412" (i think) SBC including hilborn injection pumps, dry sump and magneto for $8500. Every Sprint motor i've seen locally has been well over 700HP (alot over 800 too
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The ZF box wouldn't be my 1st choice, Mendeola makes a better box (my opinion) plan 10K-14K for it though
Assuming it's a street car....
Suspension is easy, standard 911 stuff will be perfect ($1000, $400 more to do new pads, struts, seals etc)
Brakes get tricky, you can bolt on 930 stuff, but they might not be enough
Renegade has some brakes that rival the brembo big reds for alot less $$$ but again, might not be enough... 993 brakes can be adapted (including all the big racey stuff) but is obscene in it's pricing. Figure from $1500 for renegade or 930, $3000 for brembo, $3500-???? for the 993 stuff. Any will work fine on the street, but the less expensive stuff (including the brembos and base 993 stuff) may endup overheated under extreemely hard track use.
Wheels and tires can run from $1000 complete (boxster take offs) up to????? It wouldn't suprise me if the went over 5K (Custom Kinesis wheels and 18" tires
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Radiator will be $1000. Use Renegades, i have not seen anything cool better at any $$$
Plan on $1000 worth of seals. If you're going this far w/ the car, spend the extra money and go 1st class.
Cage is a REALLLY good idea and depending on how well connected you are w/ race shops in your area, and what you want the cage to do(nascar style, flip 15 times and walk away, or something you can take on a date), can run from $1000 to $7000
Fuel cell is another good idea. Someone (fuelsafe???) makes a cell that fits in the stock tank location... $1300
Interior and body work are up to you... depends on what you expect the car to do way to much to guestimate on
If you win, my consulting fee is $250,000. If not... damn
BJH