C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

468 SBC tall deck engine build

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Old May 21, 2018 | 08:35 PM
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Default 468 SBC tall deck engine build

Hey Guys, I haven't posted any engine builds in a while. So I thought I would post a freshen up on mine. It's a 468 sbc (4.185X4.250). It uses a Dart iron eagle tall deck block. I reused my Lunati crank, and Crower billet rods. I got new custom JE pistons, their Hellfire rings. I had Strasburg machine do the machine work. And they went thru my AFR 245's, and freshened them up. I'm using the same cam, and same Miniram ported by Tony Mamo. Here's some pic's.
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Last edited by tpi 421 vette; May 21, 2018 at 08:38 PM.
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Old May 21, 2018 | 09:01 PM
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Here are some more
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Old May 22, 2018 | 12:08 AM
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That has all the right stuff, put together by a guy who does it right. I can't wait to see and hear that bad boy make a pass!

By the way Jim, you still owe me a new set of rear tires for what you've done to the old ones on my avatar car with that little 396 you built for me.

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Old May 22, 2018 | 09:34 AM
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Looks great Jim!

Good luck when you take it to the track.

Steve
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Old May 22, 2018 | 11:23 AM
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ooooh engine ****
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Old May 23, 2018 | 09:53 AM
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Here are a few more. I had my McLeod dual disc rebuilt, and while the headers were out, I had them recoated.
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Old May 23, 2018 | 10:47 AM
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That's cool to see a miniram feeding that big of a motor.
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Old May 23, 2018 | 11:16 AM
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Don't take this the wrong way but that is a beautiful engine.
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Old May 23, 2018 | 12:20 PM
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Very nice!
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Old May 23, 2018 | 12:29 PM
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Originally Posted by dclafleur
That's cool to see a miniram feeding that big of a motor.
Actually Tony Mamo did alot of epoxy work and porting on the miniram. It
flows over 400cfm
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Old May 23, 2018 | 01:51 PM
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Best thread in a long time. Love the pics. Thanks for posting, Jim!

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Old May 23, 2018 | 02:11 PM
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I think you need over 500ci, and more cam.
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Old May 23, 2018 | 02:13 PM
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Thanks, Guys. Here is a pic of it completely done.
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Old May 23, 2018 | 02:18 PM
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Originally Posted by vader86
I think you need over 500ci, and more cam.
Actually the final bore size with this block will put it at a 472
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Old May 23, 2018 | 07:44 PM
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Awesome, that is one big sbc who would guess!Pistons look sweet, good job Jim. Now you need more cyl head
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Old May 24, 2018 | 10:55 AM
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Originally Posted by tpi 421 vette
Actually the final bore size with this block will put it at a 472
So a 4.20 bore, how big can you get the bore?
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Old May 24, 2018 | 11:16 AM
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4.200 is the biggest bore I have seen done with this block. With a 4.185 bore where I am at now, minimum wall thickness is .275.
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Old May 24, 2018 | 11:53 AM
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I can't believe that you can go that big a bore on that block. That thing is wicked.
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Old May 24, 2018 | 11:56 AM
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Originally Posted by tpi 421 vette
4.200 is the biggest bore I have seen done with this block. With a 4.185 bore where I am at now, minimum wall thickness is .275.
.275 seems like plenty of wall, I don't get worried until I get under .2.
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Old May 24, 2018 | 12:11 PM
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Well maybe you could push the limits a bit on the bore, and end up at 4.250. That along with a 4.250 stroke would give you 482.33 CI.
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