Porting L98 Plenum? Worth anything?
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Re: Porting L98 Plenum? Worth anything? (TIMSPEED)
I found the motor breathed a little better on the upper end. Also, an article in GM High Tech Performance magazine where this was done to a Firebird, along with an adjustable fuel pressure regulator for fine tuning, pick up .4 seconds if I remember correctly. (I would have to dig out the magazine to verify that time :hat )
Burning Brakes
Joined: Apr 2001
Posts: 1,209
Likes: 0
From: Toronto Ontario
St. Jude Donor '13
Re: Porting L98 Plenum? Worth anything? (TIMSPEED)
I would say it did help a little with resonse and overall feel. For a free mod it is worht it.
[Modified by 89'Bowtie, 11:03 AM 8/12/2001]
[Modified by 89'Bowtie, 11:03 AM 8/12/2001]
Burning Brakes
Joined: Apr 2000
Posts: 900
Likes: 0
From: New Jersey
Re: Porting L98 Plenum? Worth anything? (TIMSPEED)
I don't have hard dyno numbers to prove a higher level of performance but I did feel my engine was more responsive with porting the Plenum. I took a ton of aluminum out of my Plenum. There's lots of room for improvement.
[Modified by M2001, 11:58 AM 8/12/2001]
[Modified by M2001, 11:58 AM 8/12/2001]
