Ok, new question about exhaust headers.
Plans are coming together for the Explorer motor, a set of Kooks has come to my attention, but hey have 3" collectors, so I assume that they are the large tube variety. So here's the question...
Explorer block, stock pistons, stock rotating assembly, stock to mildly ported heads (if my PI heads are still good), MHS Stage 2 NA cams, degreed, 2.5" exhaust with mid mount dual in/out magnaflow and chambered mufflers at the ends of the pipes. My car has no catalysts on it, it's straight pipe from the manifolds to the mid mount magnaflow.
Would the big tube headers be "too much" for the motor?
Would going from 3" to 2.5" past the collector cause issues? Going to use stepped pipe to make a smooth transition.
I have no plans to go forced induction, so am I better off going with the smaller tube headers, or taking the deal on the big tube/collector headers?
97 Thunderbird LX (The GT Bird)
PI Swapped NPI motor with some port work on the heads, PI cams, 80mm MAF, CAI that feeds from fenderwell. Jmod, 3.73:1 TL in Mark VIII carrier, Mark VIII aluminum LCAs, 93 Mark VIII driveshaft, PBR brakes (soon to be Cobras), 18x9 wheels, 255/40/ZR18 Tires, Front and Rear strut/shock bracing, GR-2 shocks, Eibach 1.5" springs, 1989 SC front and rear sway bars.
Last edited by Woodman; 07-13-2016 at 09:36 PM.