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543 440 Combo's #2781415
06/04/20 03:26 PM
06/04/20 03:26 PM
Joined: May 2004
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Taxes & Virus's R-US, NY
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What do you guys think of this combo in a stock block with a girdle?


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: 543 440 Combo's [Re: Dragula] #2781441
06/04/20 05:07 PM
06/04/20 05:07 PM
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B
birdtracker Offline
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this should be really interesting. I would like to hear your bore and stroke thoughts. I did have a 4.375 stroke crank in a RB iron block with only a little grinding. Birdtracker

Last edited by birdtracker; 06/04/20 05:46 PM.
Re: 543 440 Combo's [Re: Dragula] #2781579
06/05/20 01:14 AM
06/05/20 01:14 AM
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Bend,OR USA
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Which stock block, year and type, B, RB hemi
I wouldn't waste my time or money on using a girdle in any stock RB or B block twocents I do use aluminum main caps and ARP main suds on the 400 blocks I build if they sonic test good up scope
Buy a good block and have fun making a lot of power up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 543 440 Combo's [Re: Dragula] #2781653
06/05/20 11:18 AM
06/05/20 11:18 AM
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NC
440Jim Offline
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Depends on power level.
Turning 2000 rpm on the street should not be a problem.
Making over 800 hp, I would want a better block. twocents


1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1
Re: 543 440 Combo's [Re: 440Jim] #2781774
06/05/20 02:51 PM
06/05/20 02:51 PM
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So. Burlington, Vt.
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fast68plymouth Offline
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I’m not sure which combo the “543” is.

4.375 x 4.500 is 541.2
4.380 x 4.500 is 542.4
4.500 x 4.250 is 540.7
4.440 x 4.375 is 541.9


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: 543 440 Combo's [Re: fast68plymouth] #2781875
06/05/20 07:48 PM
06/05/20 07:48 PM
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ohio
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dbran451 Offline
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I'll give this a bump as I will be building a new engine this winter and wondering if there 543 combo is better or use the 528 combo

Re: 543 440 Combo's [Re: dbran451] #2781885
06/05/20 08:24 PM
06/05/20 08:24 PM
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Alberta
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440_Offroader Offline
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I was just looking at the 440 source combo for my 4x4. Using the 24cc dish pistons were. 050" below deck. With milling the block deck that. 050", it would bump the compression from 9.5 to 10.3 with my 84cc heads. That's if you could get 4.350" pistons. All the pistons listed were. 055"+ os. Of course this is for a 4x4 and not a race engine, so I think it would be a good stump puller on pump gas. The girdle would probably be a good idea, even for what I'd be using it for. Just wasn't sure if I wanted to go that big, having to use external oil line. I'd be interested in seeing any combos with the 4.5" stroke, as well.

Re: 543 440 Combo's [Re: fast68plymouth] #2781898
06/05/20 09:10 PM
06/05/20 09:10 PM
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S.E. Michigan
ZIPPY Offline
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Originally Posted by fast68plymouth
I’m not sure which combo the “543” is.

4.375 x 4.500 is 541.2
4.380 x 4.500 is 542.4
4.500 x 4.250 is 540.7
4.440 x 4.375 is 541.9


You know Dwayne, I never could figure out what a 472 crate hemi was either.

4.25 x 4.150 = 470.9

Did "471" sound too much like a Ford product? Not sure what the logic was there.

We will never know. But I do remember the part number was P5249666.
As in "mark of the beast" if you believe such things LOL


Rich H.

Esse Quam Videri




Re: 543 440 Combo's [Re: ZIPPY] #2781925
06/05/20 10:07 PM
06/05/20 10:07 PM
Joined: May 2004
Posts: 12,379
Taxes & Virus's R-US, NY
Dragula Online content OP
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Just curious who has built one in a stock block, and how hard did you lean on it.....We have a ton of the 512 builds running around here. Fastest one was mine at 9.70 at 138.5mph on pump gas which my little 400/512 has eclipsed to a 9.60...We even have one of the 526 builds running real strong in my buddies car, so the obvious question is how would the 543 fair?

http://store.440source.com/Stroker-Kits/products/3/

440 >> 543. (4.500" stroke/7.100" rod)


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
Re: 543 440 Combo's [Re: Dragula] #2781995
06/06/20 08:27 AM
06/06/20 08:27 AM
Joined: Jan 2003
Posts: 17,801
S.E. Michigan
ZIPPY Offline
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Well, here is another bump... I'd like to know just for info.


Rich H.

Esse Quam Videri




Re: 543 440 Combo's [Re: Dragula] #2782011
06/06/20 09:20 AM
06/06/20 09:20 AM
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Posts: 8,027
Mt Morris Michigan
mopar dave Offline
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I'm still planning on doing one. 4.375x3.91, I have a 77 400 block I will be starting on soon. Not sure of the heads, but I would like to use the stage v conversion hemi head on this 470. Would have to find them second hand now that they no longer make them. This would be an interesting package because I see no one doing it. I like to be different, just as most go roller when I want to see want can be obtained with a SFT.

Re: 543 440 Combo's [Re: mopar dave] #2782144
06/06/20 02:31 PM
06/06/20 02:31 PM
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Las Vegas
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FWIW the 512" low deck in my Valiant went 9.0's at 150 NA. SO you can certainly can make some steam this way. Will it live a long happy life, mine sure didn't. It went 100ish passes before the block gave out. Yes it had aluminum caps. Im pretty sure the 900ish HP from an NA combo in a stock block was just to much for the ole gal. I don't really know the power as it was never on the dyno but went 150 at 3470lbs so 900ish. When I did it they were between iron blocks and didn't have the $$$ for aluminum. I learned my lesson and now choose better blocks, but they have their limitations too I suppose.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: 543 440 Combo's [Re: Al_Alguire] #2782145
06/06/20 02:34 PM
06/06/20 02:34 PM
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Las Vegas
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My 470" tall deck went 9.69 at 139 in a 3100lb Duster with iron heads. It don't take a ton of power to run that in a typical A body racecar, 650ish will do it and I think they can live long happy lives at that level. Provided that the cylinders have some thickness or they have a tall fill.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: 543 440 Combo's [Re: Al_Alguire] #2782258
06/06/20 08:45 PM
06/06/20 08:45 PM
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Mt Morris Michigan
mopar dave Offline
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That is a bunch of hp Al. What compression, cam and heads does it take to get 900hp?

Re: 543 440 Combo's [Re: Dragula] #2782278
06/06/20 10:31 PM
06/06/20 10:31 PM
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Frostbitefalls MN (Rocky&Bullw...
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I like it for a high torque low rpm build. I raced a 4.5 stroke 4.350 bore motor many years ago. Very mild build that made enough power to go 10.20s at 129 mph in a 3400 lb duster. I ran 4.10 gears and 33 inch tall slicks. Since the block has about a 650 hp fuse on it, plan accordingly. The best part is it can make decent power at VERY low rpm allowing a long valvetrain and block life if rpm is kept low.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: 543 440 Combo's [Re: mopar dave] #2782395
06/07/20 01:35 PM
06/07/20 01:35 PM
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Las Vegas
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Originally Posted by mopar dave
That is a bunch of hp Al. What compression, cam and heads does it take to get 900hp?


I say 900ish because it was never on a dyno, just a garage build but I know the car went 150 at 3470. It was 15.5-1, CFE ported B1 heads. Cam I am not sure I have the info any longer but I recall was low .800" lift for sure(common shaft T&D's, would have been a split lift deal), duration sure was high 280ish/290 ish and on a 114-117 lobe center. I am sure I have the build notes just not sure where as we are getting ready to move. It would be typical for other B1 stuff I have done over the years, this was a very nice set of heads done by CFE. The heads ended up on another combo and made 1025 in a 572.

FWIW our 446 we ran in the dragster when my kid was a newbie was probably 650plus. Went 8.19 best here in Vegas at 1875lbs. Was a 12-1 compression deal with decent set of Indy -1's and a smallish roller on E85. Would have been in the 7's at sea level.

Last edited by Al_Alguire; 06/07/20 01:39 PM.

"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: 543 440 Combo's [Re: fast68plymouth] #2782963
06/08/20 06:09 PM
06/08/20 06:09 PM
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Carson City, NV
440sourcedotcom Offline
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Originally Posted by fast68plymouth
I’m not sure which combo the “543” is.

4.375 x 4.500 is 541.2
4.380 x 4.500 is 542.4
4.500 x 4.250 is 540.7
4.440 x 4.375 is 541.9


Our 543 kit is a 4.500 stroke x 4.380" bore, which equals 542.43 cubic inches. We offer pistons for that kit in .060" over, so we usually rate the cubic inches at the largest available bore size. And we did round up by .57 hundredths of a cubic inch.

Re: 543 440 Combo's [Re: 440sourcedotcom] #2782968
06/08/20 06:18 PM
06/08/20 06:18 PM
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Florida STAYcation
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Originally Posted by 440sourcedotcom
Originally Posted by fast68plymouth
I’m not sure which combo the “543” is.

4.375 x 4.500 is 541.2
4.380 x 4.500 is 542.4
4.500 x 4.250 is 540.7
4.440 x 4.375 is 541.9


Our 543 kit is a 4.500 stroke x 4.380" bore, which equals 542.43 cubic inches. We offer pistons for that kit in .060" over, so we usually rate the cubic inches at the largest available bore size. And we did round up by .57 hundredths of a cubic inch.


Which block do you recommend? Any consideration on the industrial 413,block ? What’s the minimum wall thickness? Do you offer an assembled short block ?

Re: 543 440 Combo's [Re: dIc dOc Deity !] #2783070
06/09/20 02:00 AM
06/09/20 02:00 AM
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Bend,OR USA
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I've sonic tested 4 stock bore(4.180) 413 truck and industrial block, none of them would go safely above 4.250 bore size in my opinion shruggy
I like to have at least .160 wall thickness on both thrust surfaces after boring up work


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 543 440 Combo's [Re: Cab_Burge] #2783365
06/09/20 07:07 PM
06/09/20 07:07 PM
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Southern Alberta
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I was looking at the eagle 540 kit, with only -8 cc dish pistons, it seems to really limit the head choice. What other heads have 88cc besides edelbrock that breathe enough for 540? I suppose the -8 is ok for a strip motor with hi octane fuel, not well suited for a street or 4x4 build running on pump swill.

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