Hypothetical Turbo Scenario to Educate..
Thread Starter
Joined: Nov 2001
Posts: 8,259
Likes: 4
From: Valrico, Florida
Hypothetical Turbo Scenario to Educate.. Say you have a 408ci motor with a 225/219 .565/.565 lsa 115 110 cam with twin turbos that flow between 55lbs to 60lbs/min each. Heads that flow as well as AFR225's. What would happen if you install a cam as big as 240/240 .600/.600 lsa 115 plus 3? Do you think you would run into a backpressure issue via the turbo's being to small for that cam? Do you think a cam closer to 230/230 would be better suited for a combo that is mainly used for top end pull racing of say Supra's...? The car is a Corvette FRC.
FormerVendor
Joined: Dec 2001
Posts: 2,444
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From: WWW.SPEEDINC.COM
The thing you have to consider is the entire combination. Personally I would not sacrifice driveability with an excessively large camshaft when the turbos can unrestrictively be brought to their limits with something more tame.
Originally Posted by INTMD8
The thing you have to consider is the entire combination. Personally I would not sacrifice driveability with an excessively large camshaft when the turbos can unrestrictively be brought to their limits with something more tame.
I don't think a 230/230 cam is too big, especially on a 408-it should make over 12" of vacuum easily and should be no problem to tune. I look at it this way-build the motor so i makes as much power off the FI-then pump it up-seems to work out well-especially when your limited to turbo sizing and belt slip-you would be amazed what a litttle compression can do.
