Slant Six Forum
https://slantsix.org/forum/

perspective
https://slantsix.org/forum/viewtopic.php?t=65806		 Page 1 of 1
Author:  Badvert65 [ Sat Feb 27, 2021 6:25 am ]
Post subject:  perspective
Just to give us Slanters perspective, here is a link to Power Nation's Ford 300 build up.
https://www.youtube.com/watch?v=bSTxCfu ... mb_rel_end

Hot rodded 300 Ford, 270 HP N/A
Author:  hyper_pak [ Sat Feb 27, 2021 8:53 am ]
Post subject:  Re: perspective
Thanks for posting.
Sure would like to see a slant to compare the mods to results.
Author:  Rick Covalt [ Sat Feb 27, 2021 5:38 pm ]
Post subject:  Re: perspective
That is a nice build, but I would expect that there is a lot more in it N/A than 270. With a 4.00"+ bore, 1.94 valves and 7 mains, it should be easily capable of more than 1HP / CI. Plus they were not turning a lot of RPM. They may be just building something a little less radical in anticipation of the turbo install! :D :D

I believe the last time I checked my weight and ET/MPH I was at @ 260 HP. That is 1.15 HP/CI. So a comparable 300 would be at 345HP.
Author:  Joshie225 [ Sat Feb 27, 2021 6:08 pm ]
Post subject:  Re: perspective
That Ford 300 needs bigger intake valves, but the spark plug is already really close to that 1.94" valve. A 302 would have 8 valves this size, flow a lot more air and make more power. The 230/236° @ .050" cam peters out pretty quickly too. The Ford's cylinders are 1/3rd larger than ours and harder to fill. It would be interesting to know what the head flows to see if it's the limiting factor. Not a bad job at all, but the architecture is obviously a limitation.
Author:  emsvitil [ Sat Feb 27, 2021 6:39 pm ]
Post subject:  Re: perspective
FYI

You can playback at 2X speed, and still understand them..................
Author:  slantzilla [ Sat Feb 27, 2021 11:22 pm ]
Post subject:  Re: perspective
You have to remember they use whatever parts the sponsors throw their way, plus they seem to be building more for boost than N/A.

That being said, they didn't put much cam in it.
Author:  Badvert65 [ Sun Feb 28, 2021 6:14 am ]
Post subject:  Re: perspective
Quote:
they use whatever parts the sponsors throw their way
That's why I don't watch these things that often.
I have to wonder if they really have a clue when I hear comments like the one about the timing gears - theirs not being a fiber gear.
I was just curious to see what GM and Ford inline sixes are putting out.
Author:  Joshie225 [ Sun Feb 28, 2021 9:44 am ]
Post subject:  Re: perspective
Quote:
Quote:
they use whatever parts the sponsors throw their way
That's why I don't watch these things that often.
I have to wonder if they really have a clue when I hear comments like the one about the timing gears - theirs not being a fiber gear.
I was just curious to see what GM and Ford inline sixes are putting out.
I believe the timing gear comment to be correct. You can still buy fiber, aluminum and iron cam gears for the Ford 240/300. A friend has an aluminum gear in his '68 F250 and you can hear it.
Author:  slantzilla [ Sun Feb 28, 2021 11:42 am ]
Post subject:  Re: perspective
You could tell when a 300 was going to need a gear because the fiber ones would knock when they got worn. It almost sounded like a rod knocking.
Author:  Badvert65 [ Sun Feb 28, 2021 1:34 pm ]
Post subject:  Re: perspective
Wow, I would never have thought anything but steel or iron would be used in a gear/gear drive. I stand corrected, but I will admit to knowing nothing of Ford or GM inline sixes.
Author:  plymouthcranbrook [ Fri Mar 05, 2021 8:30 pm ]
Post subject:  Re: perspective
Back 45 years ago I had a Ford Econoline E-100 with the 300 cu in six and a three speed manual trans. so much torque. Top end was about 80 or so but load the puppy up and away you would go. Obviously not a high rever but it was a truck. Used a lot of gas though.
Author:  CNC-Dude [ Sat Mar 06, 2021 4:39 am ]
Post subject:  Re: perspective
Quote:
Quote:
they use whatever parts the sponsors throw their way
That's why I don't watch these things that often.
I have to wonder if they really have a clue when I hear comments like the one about the timing gears - theirs not being a fiber gear.
I was just curious to see what GM and Ford inline sixes are putting out.
A group of us pitched in and dynoed both a 250 and a 292 inline 6's on Inliners about 10 years ago. You tried about 6 or 7 cams in each, swapped Clifford and Offy intakes. We even put 3 Weber side drafts on the 250. We tested Landon's exhaust manifolds and long tube headers. And even 5 or 6 cylinder heads on each with different valve sizes and the closed chamber versus open chamber debate. Many combos for each engine. I think the 250 ended up with over 200 dyno pulls just by itself. Very thorough and exhaustive labor to test both engine. Almost an entire month of daily parts swapping back and forth. We even did a low boost turbo install on the 250 as well.
The basis was to try to stay within the thoughts of both engines being compatible with pump gas with compression not exceeding 9:1 and otherwise being streetable. The power range on the 250 was from 200 HP with exhaust manifolds and small cam to 325 HP with the side drafts, headers, 1.94 valves and bigger cam in N/A form, and just under 400 HP with on 6 psi of boost.
The 292 went from its baseline of just under 200 HP, but with 300 ft. lbs of torque to 300 HP and 330 ft. lbs of torque in N/A form.
Author:  Jase [ Sat Mar 06, 2021 5:48 am ]
Post subject:  Re: perspective
Quote:
The power range on the 250 was from 200 HP with exhaust manifolds and small cam to 325 HP with the side drafts, headers, 1.94 valves and bigger cam in N/A form, and just under 400 HP with on 6 psi of boost.
The 292 went from its baseline of just under 200 HP, but with 300 ft. lbs of torque to 300 HP and 330 ft. lbs of torque in N/A form.
Interesting that the 250 had the 292 covered pretty well in terms of Horse powers,

Wouldn't it be nice if the slant six had been offered in a 300 inch displacement?
Author:  CNC-Dude [ Sat Mar 06, 2021 2:15 pm ]
Post subject:  Re: perspective
Yes it would, the 225 already has the same stroke as the 292.
Page 1 of 1 All times are UTC-08:00
Powered by phpBB® Forum Software © phpBB Limited
https://www.phpbb.com/