Hello,
I’m new to the 5.0 crowd.

I picked p a 89 GT last fall and need a little help with what kind of numbers the motor is producing. I now there are many variable .
I have been getting a lot of "expert opinions". Any where from 280 to 350 HP

Specs of motor to the best of my knowledge:
Stock bottom end
cobra upper and lower intake
stock throttle body
equal length BBK headers
H pipe with 40 series flows
under drive pulleys
SVO aluminum heads
basic MSD coil
E cam
doesn’t have a mass air flow yet
BBK cold air intake

The car runs great other than the lack of mass air sensor

Any fact-based numbers would be greatly appreciated.

Thanks Jeff

 

if it's an 89 then it is mass air

 

...No mass-air?? should have it! ...with a good tune, I could see around 280 rwhp...any port work to the heads or intake?

 

Well I may be mixed up on the year ,(with all the other projects).But it is definatly a speeddensity set up in need of a Mass Air
No port work to my knowledge.
280rwhp what would that be at the crank?

 

rwhp stands for rear wheel horsepower

 

I'd guess 320 at the flywheel.