viven44 Posted November 19 Author Posted November 19 (edited) Well, a twist. I had to even take down my video. I should have known better but I was so sure the secondaries were not opening that I mistook the baffle plate to be the secondaries (I have made this mistake before!!!) .... I climbed up there all the way with a light and inspected it myself just now. The secondaries are indeed opening. The machine shop knew what they were doing. I am the amateur here PS: My bronco and BB 2WD really did have the problem of secondaries opening as the Motorcraft base gasket interfered with it. I'll make an update video to just discuss that issue. But still need to digest why Big Red was more of a monster (better acceleration with WOT).... --4.1 gears on Big Red vs. 3.55 on Stripes -- Stock tires on Big Red (9.5" wide) vs. Wide mud tires on Stripes (12") -- Holley 650 CFM on Big Red vs Edelbrock 1411 on Stripes Good news is my stock size wheels/tires arrived today (my steering wheel buyer brought them to me). I should be able to close that gap later this week. Can the factors above explain the difference ? Edited November 19 by viven44
mat in tn Posted November 19 Posted November 19 the gear difference is real. but you say "wider mud tires" what is the diameter difference? that the mechanical advantage/disadvantage. when we increase the tire size in diameter, we effectively lower the total gear ratio. add that to the already lower gear ration and it multiplies. often as much as to make first gear feel as if you were taking off in second but also turning third gear into a bit of an overdrive in comparison. this is the reason why I'm using a 4.10 with my 32's and the aod/w.
viven44 Posted November 19 Author Posted November 19 (edited) 6 minutes ago, mat in tn said: what is the diameter difference? Mat, the picture below shows the difference between the tires. Close/Similar diameter but a lot wider. Edited November 19 by viven44
mat in tn Posted November 19 Posted November 19 all adds to the effective gear ratio. rolling resistance of the specific tire involved along with air pressure add up also. all of this is multiplied by the first gear ratio of the transmission and aided by the stall of the torque converter. then the engine/tuning 1
viven44 Posted November 19 Author Posted November 19 (edited) I have 2 sets of wheels/tires now. The 1986 set is on the parts truck, with 16x6 wheels. And the 1997 F250 set came in yesterday, those are 16x7. The 1997 set has good tires and the rims are more 'white' in color and offer better contrast so I'm leaning towards installing it for now... Lug nut size for the 1986 is a 1 1-16" Hex and the 1997 is a 7/8" Hex. Why is there such a big difference? Any preference on one size vs the other ? Both are stock. Apparently Ford went to smaller Hex size in the 90s. Edited November 19 by viven44
Gary Lewis Posted November 19 Posted November 19 I wasn't aware of that. But these wheels fit your truck and the nuts go on ok?
viven44 Posted November 19 Author Posted November 19 1 hour ago, Gary Lewis said: I wasn't aware of that. But these wheels fit your truck and the nuts go on ok? I was surprised too. I haven’t tried yet but it’s the same bolt pattern so hoping it would. The smaller hex is definitely a plus in that I can find sockets in my tool box more readily. The 1 1/16 hex is definitely a chunk. I don’t believe any of the aftermarket wheels even for the bullnose use that large an hex.
salans7 Posted November 19 Posted November 19 When I disassembled my old 1986 parts truck, I FOUGHT the lug nuts. They were the 1 1/16" size you mention and I will never forget them. I love the look of the factory steel wheels on these trucks and can't wait to see them on yours! 1
viven44 Posted November 21 Author Posted November 21 (edited) Tires swapped. The front tires are 265/75/16 and rear tires are 235/85/16 and at some point I’ll swap the rears to match the front. (PS: those Mickey Thompson mud tires are newer than I thought they were based on date code so they are a good set) From a driving standpoint, zero difference, I couldn’t tell any difference in performance or handling. Honestly I’m thinking the reason Big Red was perceived to be a beast is because it had a loud exhaust. I just think louder exhausts really make the WOT pulls more intense. I know from a car/truck show perspective the bigger tires are more likely to elicit positive feedback from the general public but purists such as myself like the stock looking sets. (I probably would be happy with Alcoa type wheels but the fancy set below just isn’t exactly my type.. my biggest concern is they are likely to draw attention and be stolen.) What do y’all think ? I do have a set of 4 deep hubcaps … install or not ? Edited November 21 by viven44
Gary Lewis Posted November 21 Posted November 21 I like the steelies w/o hubcaps best. With hubcaps 2nd best. 😬 2
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