How much lift ????? Before I break s#&t !

[Isolation83]

How much valve lift can I get before I run into stock piston clearance???

88 5.0 with 98 explorer gt40p engine.

Thanks,
Luke

 

[mikesracestang]

its not how much lift to break s@#$ its when it to much for for your combo

 

[Isolation83]

Want to change rocker ratio......1.6 of 1.7

Just want to be sure there are no clearance issues with the increased lift.

 

[mikesracestang]

what cam you got if it stock cam you are fine

 

[Isolation83]

Explorer V8 cam.
F4TE-6250-BA

I think the lift specs are .395/intake
.419/exhaust

 

[mikesracestang]

i have 1.7 with .548 lift your good with your set up

 

[cobra20sc]

Piston to valve clearance has almost nothing to do with lift.

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[1990_LX]

First problem is you're running the stock Explorer cam, that's a truck cam...

 

[Isolation83]

Piston to valve clearance has almost nothing to do with lift.

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Learning everyday....thanks

Is it just for "how long the valve stays open, the lobe is shaped to keep it open longer???????

Thanks all !!

 

[cobra20sc]

Depends on valve opening and closing events, specifically intake valve opening which can start opening btdc and exhaust valve closing event atdc.

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[Mustang-Junky]

My DD has a stock 5.0 cam, 1.7 RR, and GT-40p heads. No issues.

Jess