L98 Intake Questions
Thread Starter
1st Gear
Joined: Jul 2023
Posts: 1
Likes: 0
L98 Intake Questions
Hey guys, I've been looking into upgrading my 89 vette. It has an l98 with a 6-speed. I've been thinking of doing cams, but people say to first do heads. Then when I think about doing heads, people will tell you to port your plenum and upgrade your intake.
I'm a little confused on the intake side of these cars. I've always been an I6 or I4 guy so this v configuration is new to me. My question is what does the plenum and runners have to do with the intake manifold? If I wanted to add more power how could I open up airflow to the engine?
I'm a little confused on the intake side of these cars. I've always been an I6 or I4 guy so this v configuration is new to me. My question is what does the plenum and runners have to do with the intake manifold? If I wanted to add more power how could I open up airflow to the engine?
Racer
Joined: Jul 2016
Posts: 296
Likes: 14
From: New York
Hey guys, I've been looking into upgrading my 89 vette. It has an l98 with a 6-speed. I've been thinking of doing cams, but people say to first do heads. Then when I think about doing heads, people will tell you to port your plenum and upgrade your intake.
I'm a little confused on the intake side of these cars. I've always been an I6 or I4 guy so this v configuration is new to me. My question is what does the plenum and runners have to do with the intake manifold? If I wanted to add more power how could I open up airflow to the engine?
I'm a little confused on the intake side of these cars. I've always been an I6 or I4 guy so this v configuration is new to me. My question is what does the plenum and runners have to do with the intake manifold? If I wanted to add more power how could I open up airflow to the engine?
Intermediate
Joined: Sep 2022
Posts: 38
Likes: 7
From: San Diego
Thanks for all the quick replies. I’ve heard of a super and mini ram intake before. I think I’d go that route due to it being a whole assembly.
Now is my fueling going to be a bottleneck? Should I go for 24lb injectors and an upgraded fuel pump?
As for the cams, I’m unsure of a specific spec. And combining that with Valve springs I think I’d be in for a math lesson. Maybe there is an article out there that can fill me in lol
Now is my fueling going to be a bottleneck? Should I go for 24lb injectors and an upgraded fuel pump?
As for the cams, I’m unsure of a specific spec. And combining that with Valve springs I think I’d be in for a math lesson. Maybe there is an article out there that can fill me in lol
