L98 iron head ?'s
05-10-2002, 08:59 PM
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Car: 85&95 Trans am
Engine: 85-LT1 95-LT1
Transmission: 4l60e & 4l60e
Axle/Gears: 3.23 & 3.23
L98 iron head ?'s
Got the zz4 cam yesterday. Was wondering on what size intake and exaust sizes I should go with on the heads. Cam specs are Dur@.050 208intake,221 exhaust. Lift .474" intake .510" exhaust. I'm going to use 1.6 roller rockers so I know the lift will increase. I was thinkinking of going w/2.02/1.60 inch intake and exaust valves and machine them down to 2.00/1.56. What do guys think? What kind of valve springs and roller rockers should I use?
05-10-2002, 11:08 PM
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Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Don't put that much money in L98 case iron heads they're not worth it.
05-11-2002, 02:35 AM
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Car: 85&95 Trans am
Engine: 85-LT1 95-LT1
Transmission: 4l60e & 4l60e
Axle/Gears: 3.23 & 3.23
Why not use the iron heads? They can flow just as good as the aluminum vette heads.
05-11-2002, 03:39 PM
#5
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Who says the iron heads are no good? with a little work, they can do pretty well. Check this thread out.
https://www.thirdgen.org/techbb2/sho...n+head+project
https://www.thirdgen.org/techbb2/sho...n+head+project
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