I was wondering if a ranger roller would benefit me enough at all or if I should just save for a BoPort. What kind of HP gains would I see with a RR if any? Also what kind of HP gains would I see with a BoPort 1.9? The head is completely stock 160,000 miles. I really just want to see what I can get out of it without tearing it apart at all.
88 Thunderbird Top mount header Walbro 255 PimpX 3in exhaust FMIC HY35 ~22psi Gutted upper and lower intakes 80lb injectors Spec 2+ clutch
PIMPx, Pierburg boost solenoid, Walbro 255, FMIC, Gutted upper and lower intakes, HY35, Singer 38MM wastegate, Top Mount Header, Stinger 80lb injectors , Stinger BOV and 3in exhaust
Dave Flanders on TurboFord is one who showed what a RR cam can do. Check out his thread....http://forum.turboford.org/ubb/ultimatebb.php?ubb=get_topic;f=3;t=033687#000015. Given that you're running a high-mile stock head, your slider cam is probably worn. The RR is very cheap to obtain( I got mine at Pick-N-Pull with the followers for less than $50). In my case, a 1986 SVO daily driver, the difference was noticeable. I then had Delta Cams regrind the RR to their BP-7 specs(increase in lift to .444 at the valve), and that was even better! With Comp Cams 990s shimmed to 127# seat pressure, it pulls to over 6000 RPM! That said, I found a used BoPort 1.5 cheap and have installed it. I haven't completed my tuning yet, so I have no performance reference. The 2.1 and 2.5 both will require machine work on the head, AFAIK.
Last Edit: Jun 18, 2019 8:57:21 GMT -5 by tutulate
Yes, with race fuel and 30psi in a race car Pinto (low weight) it will run impressive numbers. That doesn't change the fact that Dave's setup would have made a lot more power with a good performance cam, and would have ran very similarly with a good condition stock cam. 116mph in a 2300 pound car isn't really that much power, especially when it's running a ton of boost.
No problem, just making sure people aren't confusing a stock truck cam for a performance cam. The ONLY thing about the RR that is "performance" oriented is that it's a roller. Otherwise it's just a truck cam.
Correct, the stage 2 stuff isn't drop in. My mention of them was just saying that I like the 1.5 better than the 1.9 but really the 2's are better than any of the 1's because they aren't lift limited like the stage 1 stuff has to be to be drop in.