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Customers

Alexander F.

Alexander F.

Hey John! Roller Rockers are still in and have been great. I get almost 18mpg highway! I seriously appreciate all your help.
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Marko T.

Marko T.

I have been building cars over 20 years and you have been the best parts dealer ever! Thanx for your friendship! -Marko, Finland
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Steven

Southeast Performance and John Mercedes have been "OUTSTANDING" to do business with. I couldn't be happier.
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Troy K.

Troy K.

Thanks for all your great help with my Viper.
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David A.

David A.

Thanks for everything, David
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Bill S.

Bill S.

Thanks John, 426 Hemi stroker 588 https://www.youtube.com/watch?v=1dJdt0ZFzjU
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Kyle M.

Kyle M.

John, I am very pleased with the brake conversion. The kit was very easy to install and I didn't have any problems and look very good as...
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Clay B.

Clay B.

Thanks for everything !
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Vincent G.

Thanks for all, Your shop is very highly recommended by a lot of Dakota/Durango owners up here in Canada.
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Kris L.

John, Sitting in the car with a big smile on my face. Thanks for the quality brand products and the great price. Cheers Kris
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Craig W.

Craig W.

Thanks John, So far 8 races and 8 top Five!!
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Buyer

Super guy to deal with! GREAT SERVICE!! GREAT PRICE!!
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Vincent G.

Thanks for all, Your shop is very highly recommended by a lot of Dakota/Durango owners up here in Canada.
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Brian C.

Brian C.

I have never had any problems with John on any transaction. One of the few vendors I have never had a single problem with. Including paying overnight...
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Marko T.

Marko T.

Hi John! Thanks again for the great service! Marko T. Finland
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Ryan

bought numerous things and all transactions went very smooth. Responded to emails within a day or less. Ryan
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Jared B.

John, You Rock! Thanks again for the great deals and speedy service. Really appreciate it. Jared Dakota R/T
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Don S.

John, I can't emphasize this enough, but without the help you're getting me I could not have afforded my dream engine! I literally have cringed when...
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Ian A.

Ian A.

I wanted to thank you for all your help and support, for being so patient and for being a good, honest person and especially so professional....
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Colton H.

Colton H.

"Johns the man, bought a 410 package from him years ago after I got back from overseas. The caveat I gave John was that it had to pass Californian...
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Ken L.

John, Thanks for all your help. I wish I had known about you before I ordered the rest of my stuff! Thanks, Ken
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Ricky H.

Ricky H.

Thanks for everything John. The headers are great !
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Toby W.

John, Thanks again so much. You're truly awesome.
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James G.

James G.

5.80 in 1/4 mile @ 244 mph & 3.76 @ 197 in the 1/8 mile
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Ricky J.

Thanks for all the info, you have been a great help and a credit to your company.
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Dart " Big M " Engine Blocks

Dart engineered the Big M to be the strongest, most reliable, and easiest to build big-block on the market. We redesigned the lubrication system to create a true “priority main” system that oils all of the main bearings before the lifters for extra reliability. Our stepped main oil gallery (9/16“ to 1/2“ to 7/16“) increases the flow of oil to the crank at high rpm, and our front oil crossover eliminates internal oil leaks around the distributor shaft. The result: more oil at the bearings and pushrods where it’s needed, and less power-robbing crankcase windage. We added two slotted head stud bosses on both sides of the lifter valley so you can use studs instead of hard-to-install bolts to take the place of the “missing” head bolts.
Dart machines Big M blocks in-house on precision CNC equipment to ensure quality and to eliminate the need for expensive “blueprinting.”

Specs

Material

Deck Height

Bore Diameter

Main Bearings

Camshaft

Main Caps

Oil Pan

Big M

Cast Iron

9.800"  10.200"

4.200" 4.500"

BBC

Standard BBC

Nodular Iron or Steel 4 - Bolt

Standard BBC with Dual Bolt Pattern




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