Bulldog Performance Teases New Aluminum Hemi Blocks

Although still a raw rough casting, this is a sneak peek at Bulldog Performance’s all-new aluminum G2 Hemi block. Massive webbing runs down the outside of the main skirts, and added thickness is found throughout in order to handle thousands of horsepower.

Admittedly, 2020 hasn’t gone “according to plan” for most people. But for aftermarket Hemi engine block manufacturer, Bulldog Performance in Indianapolis, IN, it’s been a heck of a mixed bag. The first few months welcomed a rush of orders from customers wanting Bulldog’s high performance iron blocks for second generation Hemi, 440 Wedge and low-deck 400 engines. Then the worst happened. And no, it wasn’t COVID-19 (although, yeah. That’s pretty bad too.)

This is an early glimpse at the yet-to-be-officially revealed Bulldog aluminum Hemi block. Obviously, once machined, the block will have pressed-in steel sleeves. Huge webbing adds necessary structural support.

Rather, an unexpected change in management at the foundry that pours Bulldog’s blocks (whom Mopar Connection Magazine personally visited to witness the process) resulted in process changes down the assembly line.

These changes manifested in a run of bad engine blocks poured too thin around the #2 cylinder. For some, nothing would’ve become of it, but for many of Bulldog’s customers – mainly blown tractor pullers and monster trucks – the weakened blocks were unacceptable.

So alas, the batch was scrapped and thus, several months’ worth of customers were suddenly back-ordered. A few more patient customers understood, but others working under a deadline couldn’t wait and were refunded their deposits.

“We’re trying to make the best of a bad situation,” Bulldog owner Dick Bradshaw told Mopar Connection Magazine Wednesday morning. “We’re paying close attention to each block as they come out of the mold.”

On the bright side, Bradshaw did hint at something coming over the horizon. “The first of the final design aluminum blocks are done.”

When pressed for more details, he revealed, “First, it’s a solid deck. We shortened the water jackets for a stronger bottom end. Also, the three center mains are 6-bolt, with four vertical and two cross-bolts. The rear main includes the rear seal, too.” When asked when the new aluminum blocks will be ready, Bradshaw emphasized, “We need to take care of our iron block customers first. They’re Priority #1.”

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Kevin Shaw

Editor-in-Chief – kevin.shaw@shawgroupmedia.com Kevin Shaw is a decade-long powersports and automotive journalist whose love for things that go too fast has led him to launching Mopar Connection Magazine. Almost always found with stained hands and dirt under his fingernails, Kevin has an eye for the technical while keeping a eye out for beautiful photography and a great story. He's also the co-author of "The Chrysler B-Body Restoration Guide."

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