tfs r long runner or tfs box r

rkloehn · 02-04-2010, 05:41 PM

whats your opinion on what will work better for this combo. and 75 or 90mm
street car only.
347 big bore 9:1
twisted wedge stage 4 fox lake heads
custom cam
1-7/8 long tubes 3" exhaust
si trim, but eventually go to a ysi

intake will also go to fox lake

let me know what you think or if you need more info

slowgtvert · 02-04-2010, 05:51 PM

Quote:

Originally Posted by rkloehn

whats your opinion on what will work better for this combo. and 75 or 90mm
street car only.
347 big bore 9:1
twisted wedge stage 4 fox lake heads
custom cam
1-7/8 long tubes 3" exhaust
si trim, but eventually go to a ysi

intake will also go to fox lake

let me know what you think or if you need more info

TFS R Runner in my opinion for street car only. Will flow PLENTY

mustangman4 · 02-04-2010, 06:11 PM

How much boost will you be running?

rkloehn · 02-04-2010, 07:42 PM

15 for now but up to 20 with a ysi

mustangman4 · 02-05-2010, 02:40 AM

Doesnt sound like much of a street car. I think a box would be good for you. 90mm

fstna347 · 02-05-2010, 05:12 AM

90mm with the box.

rkloehn · 02-05-2010, 03:44 PM

im definatly not questioning anyone but what makes the box a better choise?

Nick 1 · 02-05-2010, 03:50 PM

Quote:

Originally Posted by rkloehn

im definatly not questioning anyone but what makes the box a better choise?

Match the flow of the heads, the rpm level & 20 psi with a ysi !!!!!!!

Honestly a big power potential setup !!!!!!!!

How much Hp is the bottom end set up to handle ???

rkloehn · 02-05-2010, 04:17 PM

bottom end is a k1 4340 crank k1 forged billet h beam rods w/ arp 2000 bolts, weisco custom pistons, in a man o war block. all should be able to handle 1000hp

i wont have the ysi for a while, so will the box work well at 15lb boost thru a si trim?

mustangman4 · 02-05-2010, 05:26 PM

Quote:

Originally Posted by rkloehn

im definatly not questioning anyone but what makes the box a better choise?

Its a question of how much airflow is needed to achieve the desired amount of power. By the sound of it he is going to be looking at approx. 700 rwhp or so. At 20#'s of boost he needs to get that air to the cylinder as quick as possible or puddling from the 85# injectors will occur. It will hurt bottom end response but with a high lift cam and big flow heads, down low is not where he is going to be planning on making power. Really the question is what will be the restriction? The MAF out front of the blower(if he has one), the throttle body which is most likely going to be a 90mm so highly dought it, then the intake? Its up to you but I think if you are really going to street drive it then a runner style intake will help you get through town on the si-trim. But when you step up I think the box is the way to go.