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Subject: 605" in a 69' Firebird


Author:
Tracy Hebert
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Date Posted: 15:42:46 06/11/02 Tue

dan, i'm about to order headers and i would like your opinion on primary/collector size. the engine is a bbc 605" w/tunnel ram with (2) alcohol 950's hp. i dynoed with a 2 1/8 primary and 3 1/2 collector (only set of headers i had) and it made 875hp (6300 rpm) and 822tq (4600 rpm). I was a little disappointed on the horsepower although it was very broad. the car is backhalfed 2900lbs (car and driver) with a rack and a turbo 400 trany w/5000 convertor. what size would work best. thanks a bunch, i've seen your headers and they look great (quality, fit, etc...)!!!!!

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Replies:
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Re: 605" in a 69' FirebirdTracy09:39:02 06/13/02 Thu


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