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do i need new lifters with a new cam?

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Old Oct 10, 2009 | 02:11 AM
  #1  
88formula305tpi's Avatar
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From: Niagara Falls
Car: 1988 Firebird Formula WS6
Engine: 305 tpi lb9
Transmission: 5 speed
Axle/Gears: 3.45
do i need new lifters with a new cam?

is this a good cam for an 88 firebird 305 tpi? Also do i need to replace the roller lifters or valve springs if i replace the cam? specs trick flow Hydraulic Roller Tappet, Advertised Duration 270/276, Lift .452/.465, Chevy, Small Block

http://www.summitracing.com/parts/TFS-31402000
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Old Oct 10, 2009 | 02:31 AM
  #2  
1986Z28OWNER's Avatar
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From: Canada
Car: 1979 Malibu
Engine: Blown LSx
Transmission: T56 Magnum
Axle/Gears: 9"/wavetrac/35's/3.70
Re: do i need new lifters with a new cam?

depending on mileage, lifters wouldnt be a bad idea, but you can re-use you old ones, if they are in good shape, even though the cam is fairly mild, i would go with some upgraded springs such as the comp 981-16's, they will work with the stock retainers, and fit the stock spring pockets, also that cam seem a little low in the LSA for EFI, if look for something with a LSA of around 112 degree, and maybe a wee bit less duration(210-214 would work nice for a stock 305 tpi, and still have a bit of a lumpy idle)
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Old Oct 10, 2009 | 12:25 PM
  #3  
Atilla the Fun's Avatar
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: do i need new lifters with a new cam?

That really isn't a bad cam for this, but you could do better. Are you wanting more low-end, more mid-range, or more top-end?
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Old Oct 11, 2009 | 04:26 AM
  #4  
88formula305tpi's Avatar
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Joined: Apr 2007
Posts: 175
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From: Niagara Falls
Car: 1988 Firebird Formula WS6
Engine: 305 tpi lb9
Transmission: 5 speed
Axle/Gears: 3.45
Re: do i need new lifters with a new cam?

looking for more mid to high range. I just pulled the old cam and noticed the cam bearing is wearing on one side to a copper color no heavy groves though. Does this mean I should wait to swap the cam untill the engine is rebuilt with new cam bearings? It never missed an oil chang but the op gauge went to 60 all the time? i wonder if it starved the cam? I was going to replace the oil pump too.
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Old Oct 11, 2009 | 11:21 AM
  #5  
1986Z28OWNER's Avatar
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Joined: Sep 2006
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From: Canada
Car: 1979 Malibu
Engine: Blown LSx
Transmission: T56 Magnum
Axle/Gears: 9"/wavetrac/35's/3.70
Re: do i need new lifters with a new cam?

Originally Posted by 88formula305tpi
looking for more mid to high range. I just pulled the old cam and noticed the cam bearing is wearing on one side to a copper color no heavy groves though. Does this mean I should wait to swap the cam untill the engine is rebuilt with new cam bearings? It never missed an oil chang but the op gauge went to 60 all the time? i wonder if it starved the cam? I was going to replace the oil pump too.
it may be a good idea just to wait until your rebuilding it, you could risk damaging the new cam with a bad cam bearing
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