Head Ports Size
Thread Starter
Junior Member
Joined: May 2006
Posts: 74
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From: Wisconsin/Ft. Atkinson
Car: 89 Camaro Rs
Engine: 355 build up
Transmission: TH350
Axle/Gears: 2.73
Head Ports Size
Well im building my engine and i almost have enough money for some aluminum heads. But i dont know what size to go with? i know the valves are going to be 2.02"/1.60". With a 64cc Combustion Chambers. So should i put some 190cc intake or some 210cc intake on.
The engine is a 350 .o30 over 355 10.1 comp w/ 64cc heads.
Stock rods.
Stock crank.
Cam is a 480/480 lift.Hydraulic Lifters
Heads are going to have 1.6 roller rockers.
Dont know about intake yet.
th350 with a 3300 stall. auto
Tell me what you think of the set up?
Thanks
The engine is a 350 .o30 over 355 10.1 comp w/ 64cc heads.
Stock rods.
Stock crank.
Cam is a 480/480 lift.Hydraulic Lifters
Heads are going to have 1.6 roller rockers.
Dont know about intake yet.
th350 with a 3300 stall. auto
Tell me what you think of the set up?
Thanks
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: Head Ports Size
Cam is to small on the lift. For the heads 180, 190, 195 or 200cc intake runners will do the trick. I would not go over 200cc on a built 355.
Thread Starter
Junior Member
Joined: May 2006
Posts: 74
Likes: 0
From: Wisconsin/Ft. Atkinson
Car: 89 Camaro Rs
Engine: 355 build up
Transmission: TH350
Axle/Gears: 2.73
Re: Head Ports Size
what size cam should i use then cuz with the i mesed up the cam is a 512/512 lift
Joined: Sep 2005
Posts: 27,953
Likes: 2,463
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Head Ports Size
Looks like the cam is the same (the old 280 Magnum it looks like); you just have 1.6 rockers.
Try to get chambers smaller than 64cc, if you don't have pinging problems now. With aluminum heads you need close to a full point higher CR to get the same cyl pressure (power output) as iron heads.
Try to get chambers smaller than 64cc, if you don't have pinging problems now. With aluminum heads you need close to a full point higher CR to get the same cyl pressure (power output) as iron heads.
Thread Starter
Junior Member
Joined: May 2006
Posts: 74
Likes: 0
From: Wisconsin/Ft. Atkinson
Car: 89 Camaro Rs
Engine: 355 build up
Transmission: TH350
Axle/Gears: 2.73
Re: Head Ports Size
So your saying if i want 10.1 CR i would have to go with a 62cc or a 60cc to get 10.1 CR. Im just dont know what size heads i should go with to gewt some good hp.
Junior Member
Joined: Aug 2007
Posts: 60
Likes: 0
From: Green and gold land
Car: 1984 Camaro
Engine: BIG BAD 360!!!!
Transmission: th350 shift kit 3600 stall
Axle/Gears: 3:73 posi
Re: Head Ports Size
Nice set up.. But I would go with 4valve after market aluminum heads if you can get the money. It would make a sweet *** engine.
Senior Member
Joined: Sep 2005
Posts: 622
Likes: 0
From: Rochester, NY
Car: '82 Sport Coupe/'89 bird/'77 280z
Engine: 355/2.8/L28E(t)
Transmission: TH350/T5/4 spd
Axle/Gears: 3.73/3.42/3.54
Re: Head Ports Size
I think a 195cc intake runner is perfect for a street/strip 350. My preferance would be Trickflow or AFR.
Bad idea. It's seriously NOT worth the hassle, not to mention the MASSIVE price of a set of such heads.
Bad idea. It's seriously NOT worth the hassle, not to mention the MASSIVE price of a set of such heads.
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