The LSX Bowtie Block from Eagle Chevrolet is an excellent choice for those looking to build a high-performance engine. Delivering professional racing-level strength and entry-level affordability, this durable iron-block casting is based primarily on GM’s production LS7 block, but designed with more material in key areas — including thicker deck and bores — to support displacements of 454 cubic inches or more. Related Articles - Engine Ice’s Ice Water Racing Coolant - PAC LS Beehive Springs - RIMAC Big Blue’s “Little Brother” – 500 lb. Spring Tester & Dial Indicator Bracket
Unique six-bolts-per-cylinder-head-clamping capability enables forced-induction and nitrous combinations of greater than 2,000 horsepower. Because the LSX Bowtie block is based on production LS blocks, all of the LS-Series Gen IV cylinder heads, crankshafts, oil pans, camshafts, and accessories bolt right up to it. There is also a tall-deck version for building even larger engines. Chevrolet Performance delivers the LSX Bowtie Block semi-finished, allowing you to finish it to your needs. Whether you’re building a “tame” 800 horse bracket racer engine, or a 1,700 horsepower turbo engine for an Outlaw racer, the LSX Bowtie block is the foundation for a solid combination at an affordable price.
LSX Bowtie Block specs and features include: • CNC-machined cast-iron block • True priority main oiling • 6-head bolts per cylinder • Standard 4.400″ bore spacing • Extra-thick siamese cylinder bores • Semi-finished, machined thicker decks • LS7-Style, 6-bolt dowel-located billet main bearing caps • Wet sump and dry sump oiling capability • Production-style deep-skirt head bolt holes • Production bolt hole and thread sizes • Maintains production exterior accessory mounting provisions • Front motor plate mounting holes added • Additional material cast around cam bearings for greater strength • 8mm exterior/interior fifth- and sixth-head bolt holes • Standard .842″ lifter bores • Accommodates all LS oil pumps and oil pans • External oil pump feed (rear of block) • Main web bay-to-bay breathing holes to support greater horsepower • Includes unique cam retainer, rear cover and lifter retainers
For the advanced LSX competition engine builder, you will fully enjoy the following features of the new LSX Bowtie Block: • Front oil feed holes can be plugged/restricted for mechanical flat tappet or mechanical roller lifter applications • Can be machined safely to 9.200″ deck height • Maximum 4.200″ bore at .145″ minimum wall thickness (naturally aspirated applications) • Head bolt holes can be machined for 1/2″ studs • Front oil feed lines can be plugged and external oil pump and/or aftermarket dry sump systems can be used via oil pump feed at rear of block — may be required with certain large stroke/aluminum rod combinations • Cam bores can be machined to accept 60mm roller bearings • Can be machined for larger diameter lifters and/or 1.060″ bronze bushings • Belt cam drive systems can be accommodated, some machining will be required • Front motor plate can be used for racing chassis applications (sprint car, drag racing, truck pulling, etc.) • Threaded water plugs can be used for external heaters or coolers • Extra stock for main bearing align-honed “ • 400 MPa tensile strength iron
For more information: https://www.chevrolet.com/performance-parts/components/engine/ls-lt-lsx-series-blocks/lsx-bowtie-blocks
Circle D Specialties’ GM Pro Series 6L80E Torque Converter is available in stall speeds from 3,000-4,400 rpm.
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ENEOS extensively market-tested X Prime 0W-8 in Japan for nine years to test and develop the optimized formula, which provides extreme fuel efficiency with maximum engine protection, while also meeting the required domestic standards.
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Competing in the High 5 class at the 2022 Builder’s Brawl, Kyle Needham and his 1979 Camaro were relying on a 434 cid small block Chevy nitrous engine to help get the win. Check out the details of this build!
Walking through the pit area of the 2022 Builder’s Brawl earlier this summer, we saw Kyle Needham and his team thrashing on their drag car and its 434 cid small block Chevy. We wanted to know some more about what was in the nitrous car, so we asked him. Related Articles – One-on-One with Monster
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