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  #1  
Old 11-29-2024, 12:46 PM
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Default WTB - 4” Stroke 3” Main Crank
Anyone have one laying around they’re not going to use? I’m thinking of building a 435 out of my .040 400.
PM me
Thanks

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  #2  
Old 12-12-2024, 07:35 PM
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Anyone?

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Old 12-12-2024, 09:38 PM
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Molnar Technologies has forged cranks available for around $1100.00.

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  #4  
Old 12-12-2024, 11:14 PM
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I know, not wanting to have to spend $1200. Was hoping someone had a cast version sitting around

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Old 01-05-2025, 11:43 PM
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I have a never-run Scat 4340 that has been lightened and knife edged.

2.200 BBC rod journal.

3.00 main journal.

4” stroke.

Can post pics and figure a price tomorrow (Monday, 2/6). Located in Illinois (Chicago area).

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Old 01-06-2025, 11:06 AM
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Quote:
Originally Posted by ponchjoe View Post
Anyone have one laying around they’re not going to use? I’m thinking of building a 435 out of my .040 400.
PM me
Thanks
My original intention was to do the same for my 65- basically make a 3" main 421. cost for a 4.25' is the same if not cheaper.

if cast works go up to a 4.25" stroke. That is what I ended up doing for my 389, but I was buying pistons already. Dished 389 pistons are not a cheap hobby...

Butler has cast eagle in that stroke for what I thought was relatively affordable. Spotts is building my engine he said they are good to 6k rpm.

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Old 01-06-2025, 11:10 AM
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if cast works go up to a 4.25" stroke. That is what I ended up doing for my 389, but I was buying pistons already
That’s too easy. I don’t want a 462, I like the revving 428 better

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Old 04-17-2025, 04:54 PM
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Quote:
Originally Posted by Apache Warrior View Post
I have a never-run Scat 4340 that has been lightened and knife edged.

2.200 BBC rod journal.

3.00 main journal.

4” stroke.

Can post pics and figure a price tomorrow (Monday, 2/6). Located in Illinois (Chicago area).
Not to hijack, but Apache I sent you a PM to see if you stil have that crank. Thanks

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  #9  
Old 04-17-2025, 06:20 PM
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Not to hijack, but Apache I sent you a PM to see if you stil have that crank. Thanks
Dang, I got my hopes up you were replying to me lol

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Old 04-17-2025, 06:32 PM
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Shoot, sorry! lol

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1965 GTO 10-71 Littlefield high-helix retro/Bird (untuned) 8.44 @164 3500+lbs 10.5W's SOLD!
1964 421 GP-Sold
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  #11  
Old 04-17-2025, 06:46 PM
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That’s too easy. I don’t want a 462, I like the revving 428 better
Curiosity got me...How high do you want to rev it? My old stock crank 455 saw 7500 on a regular basis...The 482" turbo engine will see 8000 with a 4.250 crank.

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  #12  
Old 04-17-2025, 08:55 PM
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Shoot, sorry! lol
Replied via PM.

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  #13  
Old 11-22-2025, 10:43 PM
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Still looking for a crank

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  #14  
Old 11-23-2025, 08:45 AM
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A have a STD STD 421 ArmaSteel. Still holding out for a set of 8 STD 428 piston to fit the 421STD going +030. Also have a set of used TRW 428+040 that check out.

If not then i will go 455+? And get back to you.

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  #15  
Old 11-24-2025, 09:26 AM
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A have a STD STD 421 ArmaSteel. Still holding out for a set of 8 STD 428 piston to fit the 421STD going +030. Also have a set of used TRW 428+040 that check out.

If not then i will go 455+? And get back to you.
I’m looking for a 4” stroke, 3” main crank but thanks

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  #16  
Old 11-25-2025, 06:43 PM
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Default 428 Crank
I have a good 20 under crank. Local pick up only. $150

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  #17  
Old 11-25-2025, 08:53 PM
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I have a good 20 under crank. Local pick up only. $150
Bob,

I assume you mean a standard 428 crank? (3.25” mains)??

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  #18  
Old 11-26-2025, 01:05 AM
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Default 428 crank
Yes

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1966 GTO - 11.31@119 (3478 lbs) in 1979

1967 Firebird - 9.73@138 (2940 lbs) in 1986
400 cu in / 295-298 cfm RAIV / Lunati Cam 278/283 - .704 lift/5.13 gears
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  #19  
Old 11-26-2025, 08:12 PM
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Yes
Does this go with the 428 block we talked about last year?

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  #20  
Old 11-26-2025, 09:13 PM
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Default 428 crank
Not for $150. I would take $400 for the crank and block.

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