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Dirk, yeah, I have to wonder/feel that the 5.0 will be downsized sometime due to CAFE. But, I'm not in the industry, so that's just pure speculation on my part. Bill

Thanks TTH. Not being argumentative at all, just asking a question: Aren't the spray bore blocks delivered to the niche line? Does the niche line actually perform the PTWA? I thought it was performed elsewhere; could certainly be wrong.

Dang, I misread RTD's post about changes to the 2015 5.0. Lots of changes over to Boss components, and I thought the piston was one of them. Wrong. I doubt my guesses are going to be close, as I feel the redline w/ cast pistons is going to remain at 7000. 'Interesting' combination of...

TTH, thanks for the update. Keep 'em coming. I've found three bits of information; two related to post 177. First, I found an article: http://www.mustang50magazine.com/techarticles/m5lp_1003_2011_ford_mustang_gt_50_coyote_engine/viewall.html saying the volumetric efficiency of the original...

Given the reported changes, it sounds like the engine should be somewhere between the 444 horse Roadrunner and the 500 horse Aluminator. So: 460 hp @ 7400 rpm 410 ft-lbf @ 4500 rpm Odds are very high that these numbers are completely wrong! An aside: While I imagine many here have...

Gents, I'd like to make one thing clear: My previous posts were meant to be a quick look into the feasibility of some comments here. Such as 8500 rpm out of the current 5.0, 525 horse, maybe a flat crank. They are not meant to predict what Ford will do -- I have no idea about that. My...

Not much to say. I do think the screencap in post #1 looks quite good, better than the AW pix. Also very glad to hear of the 200# wgt loss. I imagine Jesse is too. :) And nice work, Chaz.

To finish a conceptual exercise, I slightly modified the previously defined concept to the following: bore: 94.0 mm stroke: 81.7 mm rod length: 156.2 mm rod/stroke: 1.91 displacement: 4,535.8 cc (276 cid) rpm: 8500 mean piston speed: 23.15 m/s max piston speed: 37.59 m/s peak accel...

Chopsui: That is a healthy sounding engine. I've listened to that clip probably a dozen times now. Love the sound. Thanks. Looks like a professional engine builders shop -- very clean, well organized. I searched for that video and found it. It's from InnoV8 Race Engines out of...

Folks, I didn't mean to alarm people over the durability of their own engine(s). Sorry about that -- absolutely unintended. Regardless of manufacturer, I'm sure there's a large safety factor built into the determination of redline. They have to do this for warranty reasons, risk mitigation...

You're welcome, Steve. I enjoy playing around w/ "what if's" and numbers. Pacettr: Thanks! Though I'd really enjoy being there at the 'pump' when these tests are done. Would be very interesting. Dirk, I agree. Check post 150. In the vein of playing w/ some numbers, I'm going to post...

Thanks. It would be very interesting to see one of these tests.

Thanks! Makes sense. Do you know how many hours @ 3000 rpm equates to 250k miles? I'm wondering if it's around 2500 hours (i.e. 3000 rpm is roughly equal to 100 mph)? I also wonder how 'race-like' the first 50k miles are. As in accel rates from 4000 - 7500 rpm, duration @ 7500, and so on...

Ah, dyno time. Can you elaborate on the abuse? I believe hot and cold temp tests are part of it. But how much time at max power and/or redline? Time at max torque? Acceleration rates? Anything you could relay would be very interesting (to me). And might allay fenderaddicts' worries. Thanks.

Sorry about that -- unintended consequence. I said that the the RR is a highly stressed engine -- but there's a difference between highly stressed and over stressed! With common sense and proper maintenance, I wouldn't worry at all. If you're always running yours out to 7500, well, ... And...

Thanks J. I did not come up w/ 8500 rpm -- others did. I feel it to be an unrealistic level, and did a little coding and web searching to back that up. I'd like to add one or two interesting tidbits (interesting to me anyway). If one wants 8500 rpm from the basic Coyote/Road Runner...

I don't see 8,500 rpm happening w/ the current coyote/roadrunner 5.0. Reason being mechanical stresses at that rpm. Here are mean piston speed, max piston speed, and peak acceleration values for some current engines. Acceleration relates directly to the forces acting on the con rod, wrist...

It's not for lack of trying, Norm. Converting the damn thing back to street & mild drag/AX/track duty is taking far longer than anticipated. I remember telling my son around Memorial Day that we should have the rear suspension done by the end of June. Not even close. Mostly spent correcting...

Thanks Mike. I'm skeptical of a flat crank Voodoo being produced; seems like a lot of $ to produce an engine that is likely intended for one vehicle only. Putting it in a truck makes no sense, imo. I suppose a Lincoln is 'possible', but I'd think a flat crank V8 would run counter to Lincoln's...

I guess there are a few things I can add to the flat crank vs cross-plane crank discussion. First, thanks Maestro for your visuals. However, there is a typo in the cylinders associated w/ each crankpin in the flat crank drawing. The 'up' crank pins are connected to cylinders 1,2,7,8 while the...