Thread: Handling 550 horsepower

Originally Posted by deathjunior

This is very helpful knowledge, thanks man, what would you suggest i do with it instead since im definetly gonna want a beefier cam and better rockers. This is my first time doing a turbo build on an engine and its also my first time working on a 3.8 short of swapping plugs and typical engine maintenance so im deffinetly happy with all the input. The engines ive worked on before this have all been either my sisters little 4 banger honda engine or one of the chevy v8's since the only muscle cars ive owned rather 350's or somthing similar so im new to this motor, but i really like it and i really wanna see what i can get out of it

You're getting vendor ported heads... they're all clearanced for .600 lift so you dont have to worry about this.

Originally Posted by matt5112

You're getting vendor ported heads... they're all clearanced for .600 lift so you dont have to worry about this.

Not true, GT1 and GT2 cams with 1.9 rockers would net a .603 lift which exceeds the clearancing from vendor ported heads. Also that amount of lift exceeds the binding point of 105 and 130 pound springs. Only the 150 pound springs will clear up to .625 and have to have a Q
1.9 inch install height as opposed to a 1.8 inch height of a 105 or 130 spring. Gonna need to look into a double roller timing chain too

Originally Posted by OH4CompG

Not true, GT1 and GT2 cams with 1.9 rockers would net a .603 lift which exceeds the clearancing from vendor ported heads. Also that amount of lift exceeds the binding point of 105 and 130 pound springs. Only the 150 pound springs will clear up to .625 and have to have a Q
1.9 inch install height as opposed to a 1.8 inch height of a 105 or 130 spring. Gonna need to look into a double roller timing chain too

if you're running more than .6" lift the cam prolly isnt gonna have much lift at part lobe....

See the whole overkill comment on the "NICK" cam thread.

You want more duration AND lift.... so a GT1 isn't a great idea....

AKA get a REAL turbo cam..........