XR7 Dave
Registered User
MaddMartigan said:FWIW, I have a 347 stroker in my 1993 Thunderbird LX. The car weighs 3975 with me in it. With the crappy JBA Cat4ward headers that I have it has only run a 13.3@98. Those numbers usually befuddle ALL of the calculators out there.
Someone pointed out above that the 92 Crown Vic used the 3.8/5.0 bellhousing. This is helpful info if someone is bent on the conversion.
As for your car, I come up with an ideal 1/4 run of 13.9@98mph, or 13.3@102mph. This means that your car is falling on it's face up top for some reason. It launches hard, but then can't keep up with itself. Maybe lack of fuel?
Anyway, if I use your mph for HP calculation I get 275rwhp, and if I use your ET I get 300rwhp. If it makes 300rwhp, then 390fwhp would be believeable. I'm betting you have some more performance in there just begging to get out.