Re: Headers for 85 Monte Carlo -- Lemons Header Message Board

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Subject: Re: Headers for 85 Monte Carlo

Author:
Dan Lemons

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Date Posted: 06:51:30 07/25/02 Thu
In reply to: Rick 's message, "Headers for 85 Monte Carlo" on 19:40:18 07/23/02 Tue

>I have a G-Body (85 SS) with a sbc. The motor is
>currently 448cid(4.125X4.156). I have some Stahl 2"
>headers on it right now and am in the process of
>converting to 18 degree heads. The motor will be
>13.8:1 , HUT1.2A CNC 18 RI Brodix(spread port 7 bolt
>flange) heads(370cfm@.700) 1050 Dominator and an RPM
>range of 5500-7500. The converter flashes 6000 now and
>the car has 4.56 gear with 30" tire. Right now the
>current setup with Brodix -10 ported by AFR runs
>10.20's@132 through 4" exhaust on DOT with no nitrous
>weighing 3758lbs.
>Thank you for your help.

Hi Rick, thanks for the e-mail. The 2" tube size is just about right with your combination and moderate RPM range.
I assume you are only changing the heads. If you feel that the car has plenty of torque and is starting to flatten out at the top end, then you may want to step the header, 2" X
2 1/8" with 4" collector, or change your exhaust system to 4 1/2" to help scavenge. Keep in mind the new heads will flow more air. If you can call me and give me a few more details on the car, 805-239-8998. We can make that header, any combination, $850. Thanks again, Dan Lemons.

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