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07-06-2021, 06:23 AM | #21 |
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Re: Just sent a new 302 CI Flathead Home . . .
Pete might be able to downshift at 60 into 1st gear with 25T LZ gears . . . me, I'd better follow the car with a wheel barrow to pick up all the parts I just chucked out onto the road! I can double clutch at lower speeds - I don't even try it at higher speeds.
Maybe I should have grown up on a farm driving trucks with crash-box 4 speeds? LOL I think the big issue is that I don't want to practice - not when you can't hardly find a 25T LZ cluster gear anymore (ask me how I know this!) - and if you do, it is $500. By the way . . . anybody have a good 25T LZ cluster - I could use one to build a spare tranny for my next big adventure. |
07-06-2021, 06:32 AM | #22 |
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Re: Just sent a new 302 CI Flathead Home . . .
I'm with you B&S, "Pete might be able to downshift at 60 into 1st gear with 25T LZ gears . . . me, I'd better follow the car with a wheel barrow to pick up all the parts I just chucked out onto the road!"
I double clutch at low speeds only too. My 32 with a 39 transmission has the 25T cluster set and I love them! |
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07-06-2021, 08:33 AM | #23 |
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Re: Just sent a new 302 CI Flathead Home . . .
Interesting. I'm going with 28 tooth to start and plan to build a 26 tooth LZ trans. that will go in when the quick change is installed.
Two reasons I plan to use the 26 LZ gears: I have them in my garage and they are mint and the entire trans only cost me $50. Haha. I figure it splits the different between 25 LZ's and 28 Fords. |
07-06-2021, 03:04 PM | #24 |
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Re: Just sent a new 302 CI Flathead Home . . .
Dale nice build. Your helping keep this crazy modified flathead stuff alive with excellent results. We need to talk about my next adventure for the salt 325 cubes normally aspirated with a stock block configuration that means leaving the ports where Ford designed them to be.
Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
07-06-2021, 06:33 PM | #25 |
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Re: Just sent a new 302 CI Flathead Home . . .
What class does a 325 fit into?
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Frank '35 Ford Model 51 '48 Ford F3 '54 Ford Tudor Mainline |
07-06-2021, 07:42 PM | #26 | |
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Re: Just sent a new 302 CI Flathead Home . . .
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Be happy to chat - would like to chat about a rocker arm project I'm about to undertake. |
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07-06-2021, 07:42 PM | #27 |
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Re: Just sent a new 302 CI Flathead Home . . .
Max cubes allowed in the XF and XXF classes there's no minimum in the class just the max.
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
07-06-2021, 08:30 PM | #28 |
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Re: Just sent a new 302 CI Flathead Home . . .
3.375 bore by 4.5 stroke was a very popular top fuel engine size in the 50's and 60's.
Almost 322 inches. |
07-07-2021, 09:36 AM | #29 |
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Re: Just sent a new 302 CI Flathead Home . . .
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07-07-2021, 11:54 AM | #30 | |
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Re: Just sent a new 302 CI Flathead Home . . .
Quote:
They used a lot of those blocks at Ascot but, mostly with 4 1/8 stroke.
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07-07-2021, 12:12 PM | #31 |
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Wrong thread
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07-07-2021, 02:10 PM | #32 |
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Re: Just sent a new 302 CI Flathead Home . . .
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07-07-2021, 02:42 PM | #33 |
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Re: Just sent a new 302 CI Flathead Home . . .
Thanks, Pete. Hate to ask, but what would a set of those pistons and rings go for.
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07-07-2021, 02:46 PM | #34 |
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Re: Just sent a new 302 CI Flathead Home . . .
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07-07-2021, 02:53 PM | #35 |
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Re: Just sent a new 302 CI Flathead Home . . .
Looking for a stock 8RT engine. Anyone know of one?
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07-07-2021, 03:48 PM | #36 |
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Re: Just sent a new 302 CI Flathead Home . . .
Wow ! Really GR8 mill & thread. Thanks for sharing !
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07-07-2021, 04:38 PM | #37 |
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Re: Just sent a new 302 CI Flathead Home . . .
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07-07-2021, 05:32 PM | #38 |
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Re: Just sent a new 302 CI Flathead Home . . .
You can get custom pistons made by quite a few folks - but you need to know where you want the rings, the compression height, etc.. I believe even Ross will make you a custom ring package setup. If you're going to a heavily boosted application, then you'll want additional dome thickness (from the normal Ross piston). Also, if boosted and if you're relieved, you may want to move the top ring down just a bit (to keep the extra heat out of it).
And noticed that Pete mentioned low tension rings . . . with these you'll want run a dry sump and depending on the number of stages, may also need a vacuum pump. The oiling system is extremely important when you get to this level of a build. All good stuff . . . just more "cubic dollars" in the mix! |
07-07-2021, 06:24 PM | #39 |
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Re: Just sent a new 302 CI Flathead Home . . .
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07-14-2021, 01:52 AM | #40 | |
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Re: Just sent a new 302 CI Flathead Home . . .
Quote:
It's been on HAMB a couple of days now. https://www.jalopyjournal.com/forum/...-gear.1235374/
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