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How big of Roller Cam can I use ???

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Old Mar 24, 2002 | 11:45 PM
  #1  
dtjones's Avatar
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From: Woodward, Okla
How big of Roller Cam can I use ???

HI Guys, I have a question. I have a 1987 GTA 350 SBC. I want to run a bigger roller cam. I have 10.5 comp. , litte head work, good setup TPI unit. My question is - does any one know if I can run something around 530-540 lift with 235-245 duration on the heads without getting into the guides or any other problems. I want to install some drop in springs that are good to .550 lift.
Never run a hyd roller this big. Has anyone else done this. Thanks for any info. Dennis
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Old Mar 25, 2002 | 06:42 AM
  #2  
jcb999's Avatar
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From: College Station, Tex USA
Car: 89rs
Engine: 400Sb
Transmission: Tremec 3550
Re: How big of Roller Cam can I use ???

Originally posted by dtjones
HI Guys, I have a question. I have a 1987 GTA 350 SBC. I want to run a bigger roller cam. I have 10.5 comp. , litte head work, good setup TPI unit. My question is - does any one know if I can run something around 530-540 lift with 235-245 duration on the heads without getting into the guides or any other problems. I want to install some drop in springs that are good to .550 lift.
Never run a hyd roller this big. Has anyone else done this. Thanks for any info. Dennis
Short answer, no
Too much duration.
Keep it in the range of 215-225 intake and 230 ext.
Lift is about right.
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