LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

heads/cam/headers project ?'s

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Old Feb 12, 2003 | 09:04 PM
  #1  
greatwhitez's Avatar
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From: Chicago Suburbs, IL
heads/cam/headers project ?'s

Hey guys...
well heres the story.. i blew a head gasket in late november, tore it apart and decided to do rebuild and heads/cam project.
-The heads are getting a fully p/p, milled, comp valve job, new springs seats, guides. I also got crane gold 1.6 rr's, comp springs and lifters, hd timing set. all head work is done by SpeedFreak inc.
-The cam is a comp custom grind w/ 266/262 dur. and .520/525 lift.
-Port-matched intake and exhaust ports.
-exhaust is mac headers 1 5/8.. and ypipe, to hiflow cat, and slp lm.
-slp cai w/ free ram air scoop
-descreened/polished maf
-ported/polish tb
-basic free mods, tb bypass, fra, and fan switch

i was wondering what u guys thought i would be looking at for numbers hp and 1/4 time wise.... thanks guys
ohh yea quick ?'s will my car be too loud lol i loved the sound w/ the lm on stock, but i got pulled over a few times.. lol i love it tho
Old Feb 12, 2003 | 09:09 PM
  #2  
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From: Bloomfield Hills MI
I would guess around 380 horsepower, so many variables though. 1/4 times should be in the low 12's...
Old Feb 12, 2003 | 09:49 PM
  #3  
greatwhitez's Avatar
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ttt.....

by the way i am also planning on tunning by pcmforless.com, and getting nittos and 4.10 gears..
Old Feb 12, 2003 | 10:02 PM
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From: Cincinnati,Ohio,U.S.
Yeah I would agree with Rodrigues, about 380 or more depending on how good your heads flow, you get bigger valves too?.
P.S. If your gonna get cam get a CAM, go with a bigger cam!! youll love it and expect to be investing in a 12 bolt in the future

Last edited by ChuckZ28; Feb 12, 2003 at 10:04 PM.
Old Feb 13, 2003 | 07:57 PM
  #5  
greatwhitez's Avatar
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From: Chicago Suburbs, IL
ttt....

oh i do have a couple of other questions..
-w/ that cam im getting what does it compare to?

-can i expect a decent gain from the tuning?

-as far as traction goes, i have goodyear gsc's now will i have difficulty?

-would an afpr and pullies lower my times at all and what gains could i expect outa them?

THANKS
Old Feb 14, 2003 | 12:11 AM
  #6  
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From: Lewisville, TX
Are your cam duration values @.050 or seat-to-seat?
Old Feb 14, 2003 | 12:24 AM
  #7  
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i say skip the pullies, but thats me
Old Feb 24, 2003 | 01:12 AM
  #8  
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From: Orinda, CA (Bay Area)
I know this is like 10 days since the last post, but whatev..

I would most definetely say tuning is a must, and you should see pretty decent gains from it.

about the pullies, i agree with chesee48, skip em', save your mulah for something else.

Traction problems?.... probably, if not most definitely, and for sure on the track.

I would also say go bigger on the cam. Go big or go home But for real, you should definitely consider it. Most people on this board (not all) who get a mildish cam regret it in a couple month and with they went bigger to begin with.

And yeah, whether this cam, or a bigger one, and epsecially since you have an M6, prepare yourself in the future for a new rear.

Goodluck!!!

-Chris
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