yeah i know everyone right now is thinking not another fastman thread, but i'm going to be ordering one very soon but still can't make a final decision. my driving habits: no towing, RPMs < 2500 (unless i'm messing around), daily driver. I've got 3.55 gears with 285's. I talked to dan and he recommended the 50mm because he said it suited my driving habits best. I agreed with him until I thought about the fact when the time for new tires comes I will be getting 265's, going back to normal setup where power should hopefully return, along with some more mileage (getting 11.5 average now). I think the reason i kinda thought about going with the 50mm was because of the gear/tire combo making the truck sluggish. but people have been telling me go with the 52mm anyways, since i don't tow. (and even if i did it would be a little landscaping trailer, nothing big, and very rare). so i guess vote for which option you think would be best for my setup/driving habits.

is there any possible way going from stock TB to either fastman i could lose lowend? for the 52mm, is there a gain in low end, if so, is it noticable? (0-2500 RPMs)?

 

please post your reasons behind your vote

 

50mm, because Dan said so

Your probably not gonna see much of a diffrence when going down to a 265. I didn't notice a diffrence hardly when I went from 265 to 285s.

 

idk im hoping i do because my truck is very slow the way it is hasn't changed with any mods

 

i'm also looking for advise for the same question. please dont vote 52 because you think the bigger the better. looking for good advise

 

yeah lol its a hard choice. i mean like for my every day driving i would probably like the 50mm, but once in awhile if id like some power id like the 52mm.

i just wish i knew like when and where the 50mm and 52mm kick in to good use, like i dont wanna spend the $230 to get the 52mm to only really work in the 3000 RPM+ range, ya know.

 

the way i look at it is if the hood of my truck makes it to the stop sign before my body does, then i wasnt driving fast enough.

what kind of throttle body do you suggest for me?

 

I think you both need the 52mm ...

timwag: You have the 5.9 and already have headers and a high flow exhaust and it sounds like you dig acceleration (as do I). You'll undoubtedly be happier with the bigger bores.

ripto: Again ... 5.9 ... you already have a high flow and are threatening to get headers ... and you want an occasional thrill ... I think you'll appreciate the bigger gains realized off of the 52mm.

 

i think that you would like the 52mm myself cause when you do get on the gas hard that you would benefit from the 52 more but what do i know what ever you get it will be better than stock

 

52mm recommended for the 360 so thats what I choose, now have a billet 55 on my 408.
Seeing you dont tow, dont waste your time with the 50mm, get the 52, you know more mods will follow so quit kidding yourself, your addicted like the rest of us