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Is this cam too large?

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Old Oct 22, 2002 | 11:48 AM
  #1  
Drkhrse89's Avatar
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From: Shakopee, Mn
Car: 89 Iroc
Engine: 305TPI
Transmission: T5
Is this cam too large?

My friend was helping me plan out my new motor and we decided on the Trick Flow 228/234* .480/.494" with 112 LSA, with 1.5 rockers. I am going to be running 1.6 rockers so it will be .512/.527". I am going to be running it in a 355 with a ported TPI for now but then I will be going to either Mini-Ram or LT1. I am not set on heads as of yet but I am looking at the Edelbrock RPM 60cc. Or I found a great deal on some Trick Flow 23*s for $800-850. It is going to have 10.5:1 flat top pistons. Stock crank and rods. I am not doubting his knowledge but I am worried if I should just not put the motor in until I get the other intake. Thanks.
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Old Oct 22, 2002 | 12:03 PM
  #2  
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
The duration is a bit large, but the LSA is computer-friendly to an extent. 112 isn't so bad with a cam that's got less duration, but your idle quality will probably be similar to a cam with less duration and a 110 lsa.

But anyway... with good enough heads and an intake upgrade (super ram, miniram or HSR) you can probably get away with it. It might even be too much cam for the super ram, but should mate nicely to the miniram, HSR or lt1 intake.

If your car is an auto, plan on a converter that stalls near 3,000 rpm, and make sure your rotating assembly and drivetrain can handle 6,500+ rpm.
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Old Oct 22, 2002 | 12:26 PM
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From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
That cam is fine. I have a 230-236 .604-.608 114 lsa, and a friend has an xe 236-242. Tuning will smooth it out.
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Old Oct 22, 2002 | 12:50 PM
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Originally posted by 89gta383
That cam is fine. I have a 230-236 .604-.608 114 lsa, and a friend has an xe 236-242. Tuning will smooth it out.
You have a bigger motor and a wider LSA. Judging by your lift I'm also guessing that you've got a solid roller? if so, that's going to make it a little tougher to compare specs.

Plus, whether it works in your car doesn't really mean it's good for him. In his car that cam is going to push the power band WAY outside of what the LTR setup is capable of complimenting.

I'm not saying that I disagree with you... but I don't know that it's just as easy as saying that the cam is OK.

Last edited by Jim85IROC; Oct 22, 2002 at 12:52 PM.
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Old Oct 22, 2002 | 01:01 PM
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From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
Mine is hydraulic, not solid.

He said he wants to change intakes later to a miniram or LT1. That's why the cam is ok.
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