Re: 87 camaro bb headers -- Lemons Header Message Board

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Subject: Re: 87 camaro bb headers

Author:
mark

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Date Posted: 03:17:17 12/01/01 Sat
In reply to: Dan Lemons 's message, "Re: 87 camaro bb headers" on 18:51:26 11/29/01 Thu

>>>>Hi, I have a std. height 454 with dart pro one
>heads.
>>>>I feel that the hooker supercomps I have now are
>>>>holding me back quite a bit. The car has a 714
>roller
>>>>set up and will rev easily to 7500 but I am not
>>>>getting any performance gains after about 6200. I
>>have
>>>>a turbo 400 in there now and have found the car goes
>>>>quicker shifting at 6200. Are the headers I have now
>>>>full of spent gasses? The car runs 9.85 @ 136 at
>535'
>>>>above sea level. I run a 1050 Holley on gas.The car
>>>>weighs 2900 with driver, rear gear is 4.56 and trap
>>>>rpm about 6500. What do you think of putting a
>larger
>>>>header on it?
>>>
>>>Hi Mark, thanks for the e-mail. If every thing else
>is
>>>correct with the motor and it flattens out at 6200
>>>rpm, then yes the headers are probably maxed out,
>they
>>>just can't flow any more air.
>>>What cu.in. do you have? Do you use nitrous? Do you
>>>know how much hp you should be making?
>>>Let me know and we should be able to come up with the
>>>best tube size. Thanks again, Dan Lemons.
>>Hi again, no nitrous, right now std. bore 454 but I
>>also have a 502, motor should be between 675 and 700
>>hp and I am not experiencing any problems with it.
>
>Hi Mark, If you are using mufflers, take them off and
>see if the car picks up. If your current header is a 2
>1/8" tube with a 3 1/2" collector try cutting off the
>collector and installing a 4" collector to see if
>there is a change.
>I suspect that you need a 2 1/8" stepped to a 2 1/4"
>tube with 4" collectors. If you plan to use nitrous in
>the future you could possibly use a 2 1/4" with 4"
>collectors and use an exhaust system to help build
>bottom end back into it. You haven't mentioned the
>size header you are using now, that would help me.
>Thanks again, Dan.

Dan I have Hooker supercomps on it. I believe they are only 1 7/8 x 30 with a 3 1/2 collecter. I don't use mufflers. Also I forgot to mention I have a Art Morrison strut kit front end which eliminates the factory coil springs, springs are now on the struts and the stock lower control arms are replaced with a set of tubular ones, however they still mount up just like the stock ones. I have a mini starter too. I still use the stock oil filter location, but I can change to a remote if need be. I would like a set of headers that can be installed with the motor in place and I have a front motor plate, no midplate. What do you suggest?

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