theformula

Sorry if this is not the right board for this question but i couldnt find anywhere else.

Anyway, I have a 305 TPI speed density and I want to port the plenum. Is there somewhere that gives instructions on how to do this? I also plan to get SLP siamesed runners along with this. Why would i need to get them "port matched"? Is it necessary? Would SLP runners be a good idea?
thank you.

speed88

You can find some good instrutions for porting your plenum at http://members.aol.com/mmmm999/3rd-degree/home.htm
Go to the bottom of the page and click on "Tips", here you will find the directions on how to port you plenum as well as some advise on how to polish it!
Hope this helps!

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88 GTA
L98 350
700R4
3:27 axle
MODS,
Edelbrock TES headers, 3" straight pipe, Flowmaster 80 series, K&N filter, Accel 8.8mm wires, Bosch Platinum plugs, Wells cap and rotor button, Wells ignition module, MAF screens removed, Hypertech TB air foil, Thermomaster stage II chip, 180* Powerstat, Hypertech cool fan switch, B&M shift kit, B&M power clutch pack, B&M servo, GM fuel filter

[This message has been edited by speed88 (edited October 07, 2000).]

[This message has been edited by speed88 (edited October 07, 2000).]

MrJ

Porting the plenum is very easy. You don't need siamesed runners on a near stock 305 TPI, the TPI intake was designed for a 305 and a ported base, runners, and plenum are probably good for close to 300hp on a 305 TPI.

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91 Trans Am WS6
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter

supposed 'peanut cammed' car (yeah, right)

MoreMoodThatMod

Rock90rs

iTrader: (3)

I have a copy of a very detailed article that
VADER put together on the procedure, It is complete with pic's. You will however need adobe acrobat reader to view it.

Drop me an e-mail at Iroczrs@aol.com if you would like me to send it to you.