When do stock headers become a restriction?

[Undercover87T]

Call Nick ...
Preferred Telephone Hours: Monday thru Friday 8:00am to 9:00am and 6:00pm to 8:00pm
Arizona Time Zone (602) 866-9908

Will do thanks.

 

[machinegun]

Thta is alot of work for low 11's in one of these.

injectors chip turbo downpipe exhaust and good trans is really al you need. There is no reason to go into the engine for low 11's, and even if you have to for some other reason you really done need all that for that goal.

 

[Undercover87T]

Thta is alot of work for low 11's in one of these.

injectors chip turbo downpipe exhaust and good trans is really al you need. There is no reason to go into the engine for low 11's, and even if you have to for some other reason you really done need all that for that goal.

Previous owner ran the 3.8 low on oil and spun a rod bearing. I bought the 4.1 already assembled from pan to heads, hence the specs. Also not using alky at this point so I'll only be running 17-18 psi for the street to see what it does.