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Bill Mitchell Products. More Mopar blocks #2717727
11/19/19 10:55 PM
11/19/19 10:55 PM
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Posts: 20,116
PA.
pittsburghracer Offline OP
"Little"John
pittsburghracer  Offline OP
"Little"John

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Posts: 20,116
PA.
More good news

26F94EF9-45AC-4FE6-B7DE-82A26E8DB21B.jpeg

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: Bill Mitchell Products. More Mopar blocks [Re: pittsburghracer] #2717767
11/20/19 07:16 AM
11/20/19 07:16 AM
Joined: Feb 2005
Posts: 4,309
Prospect, PA
BSB67 Offline
master
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Prospect, PA
Those look beautiful.

Re: Bill Mitchell Products. More Mopar blocks [Re: BSB67] #2717770
11/20/19 07:37 AM
11/20/19 07:37 AM
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Posts: 4,243
Charlotte, North Carolina
sgcuda Offline
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Charlotte, North Carolina
Finally. After 50 years! boogie

Re: Bill Mitchell Products. More Mopar blocks [Re: sgcuda] #2717772
11/20/19 07:50 AM
11/20/19 07:50 AM
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back in Georgia
dthemi Offline
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Unless something has changed structurally with them to make them stronger than their original offering, I'd be careful about building a race motor with those.

Re: Bill Mitchell Products. More Mopar blocks [Re: dthemi] #2717780
11/20/19 09:28 AM
11/20/19 09:28 AM
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Marion, South Carolina [><]
an8sec70cuda Offline
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Originally Posted by dthemi
Unless something has changed structurally with them to make them stronger than their original offering, I'd be careful about building a race motor with those.

Can you explain or elaborate on the power level you're referring to? You build way more powerful stuff than the average Mopar guy does Darren, lol.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Bill Mitchell Products. More Mopar blocks [Re: an8sec70cuda] #2717786
11/20/19 09:45 AM
11/20/19 09:45 AM
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NW Indiana
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fbs63 Offline
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NW Indiana
The main bulkheads are very thin below and between the cylinders.

Re: Bill Mitchell Products. More Mopar blocks [Re: fbs63] #2717796
11/20/19 10:37 AM
11/20/19 10:37 AM
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So. Burlington, Vt.
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fast68plymouth Offline
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If the BM blocks are just like the aluminum MP were ....... there doesn’t seem to be any issues at the 900hp level.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Bill Mitchell Products. More Mopar blocks [Re: fast68plymouth] #2717801
11/20/19 10:43 AM
11/20/19 10:43 AM
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Posts: 15,439
Val-haul-ass... eventually
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BradH Offline
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Val-haul-ass... eventually
Any known P I T A items (issues?) with the old MP-by-World aluminum blocks that Bill Mitchell looks to be reproducing?

Re: Bill Mitchell Products. More Mopar blocks [Re: fbs63] #2717808
11/20/19 11:04 AM
11/20/19 11:04 AM
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back in Georgia
dthemi Offline
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Originally Posted by fbs63
The main bulkheads are very thin below and between the cylinders.



I've only freshend one of these first hand so what I saw was as mentioned, weak in the web, and deck. I have seen 2 broken ones, and one so poorly machined that the rear main seal top, and bottom could not physically align.The broken ones were in spray use, but nothing a good mega block couldn't have taken (maybe 1400hp). Like without a diaper they could have ran the crank over. Some said it was sub par studs, but the look to me was weak block, in the deck too.

Re: Bill Mitchell Products. More Mopar blocks [Re: dthemi] #2717817
11/20/19 11:48 AM
11/20/19 11:48 AM
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Posts: 3,097
back in Georgia
dthemi Offline
master
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Here's something from them in09,,read this and tell me if this sounds like,,,' I'll just pee on your leg, then calmly explain to you it's raining"





FROM BME WORLD PRODUCTS

it seems it been discovered the world blocks were using ARP bolts and not "ARP" studs and they admit it...... check your world blocks carefully!

Gentlemen,

I'd like to introduce myself. My name is Paul Kaufman. I have worked for World Products as a technical representative and engine builder for approximately a decade. I have been building engines professionally for the better part of my life with over 40 years experience in both the private industrial sector and performance speed industry. I have been asked to express my opinion ( and that of World Products ) regarding concerns some of you may have with the main studs utilized on the Mopar iron and aluminum Hemi and Wedge blocks manufactured by World Products. World has manufactured several thousand of both the iron and aluminum blocks in the last few years and recently we have heard that some of these studs have failed when torqued. I have personally assembled many of the Hemi and Wedge engines at World Products, and have not had any issues. I would love to be able to say that there are many torque wrenches that are being used that were manufactured in third world countries and that is the problem, but that would be unfair. World Products does not manufacture studs nor do we import inexpensive hardware from China. The studs used on the Mopar iron blocks are to Mopar's engineering specs and our engineers determined those studs to be of sufficient quality for use on World Products aluminum blocks as well. These studs are not ARP. More recently World Products chose to switch to the ARP brand studs, not because we found them to necessarily be better, but to align ourselves with the hardware being utilized on our Chevy and Ford blocks. I would like to point out that over the years I have experienced failure with hardware manufactured by ARP, but grab another one and move on. I have also experienced a rod breaking or a lifter failing, all from big name brand manufacturers, but that doesn't mean the sets of parts were all defective. The point is sometimes rods break, lifters fail and bolts and studs stretch, break, threads gall, etc. It is the nature of metal objects that have been cast, poured, machined and manipulated that a small percentage will fail, regardless of who manufactured the item. If you find one defective stud that does not mean all the studs are bad. As with most manufacturers, World Products has a warranty policy. Should you find any defect in any of World Products parts or components within one year of purchase simply contact us and we will be more than happy to exchange that defective part. If you would like to change out your hardware to a complete set of ARP studs, you can purchase them from your local ARP dealer or retailer. The caps are located by ring dowels and block registers. The line bore will not be affected. The torque rating on the ARP studs remains the same. Thanks for your time, Paul

Re: Bill Mitchell Products. More Mopar blocks [Re: dthemi] #2717819
11/20/19 11:56 AM
11/20/19 11:56 AM
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Odessa, Fl
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blowndart Offline
super stock
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Their website states that the newer blocks are supposed to have gone through some re-design over the last year+ from the previous generation to make it better. Anyone interested in buying one should ask them what the re-design entailed.

Re: Bill Mitchell Products. More Mopar blocks [Re: blowndart] #2717827
11/20/19 12:35 PM
11/20/19 12:35 PM
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Stuttgart, Arkansas
rickseeman Offline
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Well, they look beautiful on the skid.


2011 Drag Pak Challenger
Re: Bill Mitchell Products. More Mopar blocks [Re: rickseeman] #2717830
11/20/19 12:46 PM
11/20/19 12:46 PM
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So. Burlington, Vt.
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fast68plymouth Offline
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After getting to freshen the two 900hp 572’s I built from MP/World blocks....... I’d have no hesitation using them again for similar builds.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Bill Mitchell Products. More Mopar blocks [Re: fast68plymouth] #2717833
11/20/19 12:58 PM
11/20/19 12:58 PM
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Posts: 19,304
Las Vegas
Al_Alguire Offline
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A BM block was recently delivered to Las Vegas.....FWIW I have one living just fine at 1200HP NA in my Stratus. There were some things we had to fix with machining but nothing more than a typical Indy block needs.


"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: Bill Mitchell Products. More Mopar blocks [Re: Al_Alguire] #2717863
11/20/19 03:53 PM
11/20/19 03:53 PM
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back in Georgia
dthemi Offline
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Are there changes in them from intial offering?

Re: Bill Mitchell Products. More Mopar blocks [Re: dthemi] #2718373
11/22/19 01:01 PM
11/22/19 01:01 PM
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Posts: 326
Alberta
Wookie316 Offline
enthusiast
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Alberta
I am currently working on a 572 based off an original block.
It will probably be in the 800 range with a set of 440-1’s that Dwayne has done for me.
Should be a great bracket motor in my 71 Charger.
Molnar Crank and rods. Diamond pistons. It will be about 14-1.
At this power level, I do not have any worries. Should hold together well.
Hoping it will be on the dyno in Feb.


1971 Plum Crazy Super Bee. 572 World Aluminum block with a Cope 727 & Dana 4.10 out back. 9.88 @ 138 with a 1.35 60 NA. Dialed back to 10.0’s. 4000 lbs with me in it.
Re: Bill Mitchell Products. More Mopar blocks [Re: Wookie316] #2718376
11/22/19 01:16 PM
11/22/19 01:16 PM
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Posts: 511
florida dade
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cesar perez Offline
mopar
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florida dade
Are they available in aluminum and how much

Re: Bill Mitchell Products. More Mopar blocks [Re: cesar perez] #2718392
11/22/19 01:52 PM
11/22/19 01:52 PM
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Posts: 500
MD
JACK1440 Offline
mopar
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MD
My block is about 3 years old. It dyno'd just under 900hp but, doesn't have a lot of run time on it yet due to some issues with the block and some issues with my heads. I just got back together but, it looks like mother nature isn't going to work with me this year. My issue was with the block was oiling..... The first go round it cost me a rotating assembly and ended up with 2 sleeves. Bill did work with me and covered the block repairs. I had to buy another assembly and bumped the cu in to 572 since I had bought a good flowing pair of 440-1's. Before going back together we ran gun drills thru some of the oil passages because we found they weren't intersecting that great. She's oiling great now. The block is a nice piece otherwise. Just like I was told on here. You have to have someone knowledgeable go thru the block good before assembly. twocents

Re: Bill Mitchell Products. More Mopar blocks [Re: cesar perez] #2718401
11/22/19 02:10 PM
11/22/19 02:10 PM
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Odessa, Fl
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blowndart Offline
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Odessa, Fl
Originally Posted by cesar perez
Are they available in aluminum and how much

https://www.billmitchellproducts.co...lock-10-720-deck-4-490-bore-billet-caps/

Re: Bill Mitchell Products. More Mopar blocks [Re: fbs63] #2719186
11/25/19 02:40 PM
11/25/19 02:40 PM
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Posts: 17,801
S.E. Michigan
ZIPPY Offline
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S.E. Michigan
Originally Posted by fbs63
The main bulkheads are very thin below and between the cylinders.


I can remember two actual complaints...some had paper thin spots that could be broken through easily with a sharp object.
(So that means a whole lot more than two were really out there)

The response from the ivory tower was, the product was developed using FEA, and the thin areas in the mains were, at that time, considered deliberate.

I was also given examples of several builders who deliberately opened up/machined away those thin areas which I was told was for a reduction in Windage losses.

This wasn't a debatable topic at that time, and these are not my ideas. The corporate Gods had spoken, LOL.
I'm just the messenger so don't shoot.

for the price charged, I'd prefer overbuilt rather than under.


Rich H.

Esse Quam Videri




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