runners / cam
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Member
Joined: Apr 2005
Posts: 490
Likes: 1
From: Hamilton ON Canada
Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
runners / cam
Im running an 87 GTA TPI 350 auto, I noticed at the track that when I reach 4500 rpm im not pulling as hard.
Is this due to the long runners or is it because of the cam?
With a set of better runners would I be able to pull hard till 5000 rpm or higher on this stock cam?
Is this due to the long runners or is it because of the cam?
With a set of better runners would I be able to pull hard till 5000 rpm or higher on this stock cam?
Senior Member
Joined: Sep 2002
Posts: 988
Likes: 57
From: Nebraska
Car: '89 Formula
Engine: 355
Transmission: 700R4
Axle/Gears: 9 bolt
Re: runners / cam
The stock cam isnt exactly great, but this is 99% the fault of the 17in of runner that the air has to traverse before it reaches the chamber.
A runner upgrade may help, but be advised that unless you get a siamesed set, the actual length of the runners will not change. You may be able to pull some higher r's with a better base and runners. But with the cost of this kind of upgrade, I would seriously consider putting the money towards an HSR or Miniram.
A runner upgrade may help, but be advised that unless you get a siamesed set, the actual length of the runners will not change. You may be able to pull some higher r's with a better base and runners. But with the cost of this kind of upgrade, I would seriously consider putting the money towards an HSR or Miniram.
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