434 ci DX build

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Old Dec 8, 2023 | 07:19 AM
  #1  
cutlassefi's Avatar
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434 ci DX build

Here you go;
DX block
My DX 4.00” Stroker crank
Mahle 4.155 pistons, 10.5:1
Lunati 6.125 rods
Custom hyd roller
BAM .937 solid roller lifters
CNC’d Speedmasters (Early version)
Victor cleaned up by Wilson manifolds
My 1.7/1.65 HS rockers
Holley Terminator TBI
587hp/540tq




Last edited by cutlassefi; Dec 8, 2023 at 02:11 PM.
Old Dec 8, 2023 | 07:38 AM
  #2  
SteveDB's Avatar
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Mark,
Always great to see your builds and results. Appreciate you continuing to share.
Old Dec 8, 2023 | 11:55 AM
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Mark,

Beyond the prodigious power...

That's a gorgeous build! Nice workmanship and attention to detail.

Cheers,
Gary
Old Dec 8, 2023 | 11:57 AM
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Sweet Mark, now let's wait and see where it will be planted!
Old Dec 8, 2023 | 12:23 PM
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Nice!
Have the sheet? I'd love to see the curve on this thing
Old Dec 8, 2023 | 01:10 PM
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Nice Build.
Old Dec 8, 2023 | 02:12 PM
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cutlassefi's Avatar
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Originally Posted by therobski
Sweet Mark, now let's wait and see where it will be planted!
Thanks guys!
’69 Cutlass with a 4 speed and 3.91 rear.
Old Dec 8, 2023 | 02:45 PM
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Nice work!
Old Dec 8, 2023 | 02:47 PM
  #9  
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Man, the torque curve looks like Kansas. Awesome!
Old Dec 9, 2023 | 04:06 PM
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I'm just a drooling, here. Nice work.
Old Dec 9, 2023 | 08:52 PM
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That'll be an absolute blast in a clutch car. Great job Mark
Old Dec 11, 2023 | 05:25 AM
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Mark, as expected, the torque curve on my 440 looks almost the same from 3900 to 5000, but the mine starts falling off at 5,100 due to the Performer RPM.
What's the 0.050" numbers on those lobes?
How is the Terminator TBI working out? I just ran a 2 barrel Sniper 2 on a straight 6 in a '65 C10 and, once we got the original distributor to work correctly, ran really really well. Much better than the ongoing battle with a first gen MSD Atomic TBI on a mild SBC. Hilariously, that 2 barrel Sniper has a "cam" configuration screen with only one option: "Stock/mild". Very presumptuous of them, I think.
Old Dec 11, 2023 | 06:27 AM
  #13  
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Going to "dog ear" this post for my '69 DX "some day" build!
Old Dec 11, 2023 | 08:21 AM
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Originally Posted by oddball
What are the 0.050" numbers on those lobes?
How is the Terminator TBI working out?
With the big lifters it comes out to 246/254@.050.
Terminator is probably the best of the worst. As you know I don’t regard TBI units as “fuel injection”. But these work ok. You just need to really limit the learn almost immediately after getting a base map, and do the rest yourself. Otherwise, they don’t repeat very well pull to pull.

Last edited by cutlassefi; Dec 11, 2023 at 10:33 AM.
Old Dec 12, 2023 | 06:10 AM
  #15  
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Ah, almost an extra 10 degrees on that cam. What's the intended use of the engine?
Old Dec 12, 2023 | 06:28 AM
  #16  
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This is the motor I want 👍 and love that it’s spinning at 6000 rpm’s and making power . Nice work , maybe someday
Old Dec 12, 2023 | 06:43 AM
  #17  
cutlassefi's Avatar
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Originally Posted by oddball
What's the intended use of the engine?
Fun😉
Old Dec 12, 2023 | 09:58 AM
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Originally Posted by deadeyejedi
This is the motor I want 👍 and love that it’s spinning at 6000 rpm’s and making power . Nice work , maybe someday
But, it's all done at 6k, too
Old Dec 12, 2023 | 10:07 AM
  #19  
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Originally Posted by fleming442
But, it's all done at 6k, too
True ! but still all I would need my ***** are a lot smaller than they used to be 😳
Old Dec 12, 2023 | 10:14 AM
  #20  
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Mark,

WOW, very nice!

​​​​​​Please consider posting a video and audio clip of one of these builds. I'd like to play it very loudly in my daily driver...it would be kind of like "make believe" performance. 😬
Old Dec 12, 2023 | 11:20 AM
  #21  
cutlassefi's Avatar
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Originally Posted by Sugar Bear
Mark,

WOW, very nice!

​​​​​​Please consider posting a video and audio clip of one of these builds. I'd like to play it very loudly in my daily driver...it would be kind of like "make believe" performance. 😬
Lol!
Bruce, actually the Dyno sheet posted doesn’t really give the whole story. It was still making in the 580’s around 6200. (Never look at the first and last number as being correct). I’d say a redline of 6600 or so would prove to be optimum.
Old Dec 12, 2023 | 12:04 PM
  #22  
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That's a nice build!
Old Dec 12, 2023 | 01:58 PM
  #23  
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Thanks Chad!!
Old Dec 27, 2023 | 03:28 AM
  #24  
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This beauty is mine!. Mark did my 455 build so I knew this one would be fun. Going in my 69 Cutlass Convertible with a TH400 from JW Performance and 3.91 12 bolt from Brian Trick.

Old Dec 27, 2023 | 04:57 PM
  #25  
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I wish I had known about those lifters when you helped me with my build Mark. Do they have those .937s available in hydraulic?
Old Dec 28, 2023 | 06:33 AM
  #26  
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BAM only makes solid lifters. Sure, setting the lash on a hydraulic cam is a bit tricky (you want close to zero but not zero when cold), but at least for me it's not any noisier than it was with hydraulic lifters.
Old Dec 28, 2023 | 07:31 AM
  #27  
cutlassefi's Avatar
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Originally Posted by oddball
BAM only makes solid lifters. Sure, setting the lash on a hydraulic cam is a bit tricky (you want close to zero but not zero when cold), but at least for me it's not any noisier than it was with hydraulic lifters.
^^^^^
Old Dec 28, 2023 | 07:49 AM
  #28  
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Originally Posted by oddball
BAM only makes solid lifters. Sure, setting the lash on a hydraulic cam is a bit tricky (you want close to zero but not zero when cold), but at least for me it's not any noisier than it was with hydraulic lifters.
Thanks. I went to their website and it didn’t say anything about hydraulics.
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