Originally Posted by
Clyde65
Hey yall, I need some ideas for a performance upgrade for my 4.8, it is in a non emission vehicle, dont want turbo/bottles or anything like that. What cam? etc, I need to open it up anyway, broken exhaust bolt on both heads. Ideas are always appreciated.
Clyde65
, ported heads, cam in the 23x/23x is all I would go IMO. LT headers, 3500 stall, 410 gears, locker, arp rod bolts. You will end up having a high revving 4.8 that makes more power than torque. It will be hard to break 400whp though. In fact, Im sure someone will correct me if Im wrong, But I dont know that there has been a 4.8 to break 400whp NA.
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