Need Advice on Roller cam...
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
I paid $80, $10/cut, to open up my intakes to 1.94.
It's not a giant difference, say 10HP? If you back cut your 1.84's you'll be ok. Not life or death.
But it's a PITA to remove your heads, buy another head gasket and intake gaskets, just to cut for larger valves. If you're not doing it now, don't plan on doing it on these heads. Run 'em until you have the "gigabucks", and shell out for some really good aftermarket heads.
do you have a feeler gauge, and a good .001" accurate caliper? you'll need them if you don't have them. (for lots of stuff.)
Yea, I'd look into another machinist, a lot of them out there have that mindset, it's an expensive hobby for sure.
It's not a giant difference, say 10HP? If you back cut your 1.84's you'll be ok. Not life or death.
But it's a PITA to remove your heads, buy another head gasket and intake gaskets, just to cut for larger valves. If you're not doing it now, don't plan on doing it on these heads. Run 'em until you have the "gigabucks", and shell out for some really good aftermarket heads.
do you have a feeler gauge, and a good .001" accurate caliper? you'll need them if you don't have them. (for lots of stuff.)
Yea, I'd look into another machinist, a lot of them out there have that mindset, it's an expensive hobby for sure.
Joined: Jun 2002
Posts: 13,576
Likes: 30
From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
honestly, i agree with sonix on this one.
if you were willing to drive a little ways, i'd say go to John Wooley at Brooks NAPA in Warner Robins. he's been VERY good to me and is willing to work with you...but i know it's like a 2 hour drive or something from savannah. and he's not overpriced like your guy is.
if you were willing to drive a little ways, i'd say go to John Wooley at Brooks NAPA in Warner Robins. he's been VERY good to me and is willing to work with you...but i know it's like a 2 hour drive or something from savannah. and he's not overpriced like your guy is.
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iTrader: (17)
Joined: Jan 2005
Posts: 2,716
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From: Mobile, AL
Car: GTA
Engine: 383 HSR
Transmission: TH-700R4
Axle/Gears: 3.42
Originally Posted by Sonix
I paid $80, $10/cut, to open up my intakes to 1.94.
It's not a giant difference, say 10HP? If you back cut your 1.84's you'll be ok. Not life or death.
But it's a PITA to remove your heads, buy another head gasket and intake gaskets, just to cut for larger valves. If you're not doing it now, don't plan on doing it on these heads. Run 'em until you have the "gigabucks", and shell out for some really good aftermarket heads.
do you have a feeler gauge, and a good .001" accurate caliper? you'll need them if you don't have them. (for lots of stuff.)
Yea, I'd look into another machinist, a lot of them out there have that mindset, it's an expensive hobby for sure.
It's not a giant difference, say 10HP? If you back cut your 1.84's you'll be ok. Not life or death.
But it's a PITA to remove your heads, buy another head gasket and intake gaskets, just to cut for larger valves. If you're not doing it now, don't plan on doing it on these heads. Run 'em until you have the "gigabucks", and shell out for some really good aftermarket heads.
do you have a feeler gauge, and a good .001" accurate caliper? you'll need them if you don't have them. (for lots of stuff.)
Yea, I'd look into another machinist, a lot of them out there have that mindset, it's an expensive hobby for sure.
Thread Starter
Supreme Member
iTrader: (17)
Joined: Jan 2005
Posts: 2,716
Likes: 3
From: Mobile, AL
Car: GTA
Engine: 383 HSR
Transmission: TH-700R4
Axle/Gears: 3.42
im such a newbie when it comes to the valve train.... can you help me find what retainer kit i need if I indeed need one? why are the springs i bought considered "single" if there is another spring inside of it?
Joined: Jun 2002
Posts: 13,576
Likes: 30
From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
it's a dampner spring. your stock springs have that inner spring too. it helps prevent valve float from high rpm operation and damage to the springs from harmonics...or something like that.
i believe your stock retainers will work fine as long as they aren't worn out.
i believe your stock retainers will work fine as long as they aren't worn out.
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iTrader: (1)
Joined: Jul 2004
Posts: 10,763
Likes: 4
From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
yea, the comp tool is ~$60, $40 for the cutter, $20 for the arbor. That's for cutting your guides down. You can use it in your drill press, but remember, only if you *need* it eh?
Thread Starter
Supreme Member
iTrader: (17)
Joined: Jan 2005
Posts: 2,716
Likes: 3
From: Mobile, AL
Car: GTA
Engine: 383 HSR
Transmission: TH-700R4
Axle/Gears: 3.42
here is a dumb question... what RPM range is this hotcam? how do i determin what my redline should be?
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