en-us Wed, 16 Sep 2026 12:45:40 GMT 184724620 https://motorheadmedia.com/long-block/184724620/boost-ready-dry-sump-lt4-long-block-376-or-416-ci.html GM's aluminum LT production block has proven itself to be a strong performer. We see this long block as being able to reliably handle to 1,200 hp. That could not be said about its aluminum LS predecessor. We switch to an aftermarket LS block over about 750hp. Aftermarket aluminum blocks are a high-cost upgrade. An LT's design provides a number of other benefits over its LS predecessor. The key characteristic of an LT is direct injection. This provides greater control over the…

]]> Engines: GM/Chevrolet: Long Block Tue, 15 Sep 2026 07:50:05 GMT 182685226 https://motorheadmedia.com/long-block/182685226/borowski-custom-dart-ls-next-aluminum-long-block.html This long block is for someone that wants bulletproof so they won't cringe every time they turn up the boost. Like in the video. The recipe for this piece has further evolved since the video was shot back in 2018. We now use a skirted Dart aluminum LS Next engine block and upgrade it to 1/2" head studs and machine the lifter bores to 0.904" for larger, more robust lifters. Callies has also introduced their new Apex crank line. Its performance is comparable to their Magnum line…

]]> Engines: GM/Chevrolet: Long Block Tue, 15 Sep 2026 07:50:05 GMT 184492229 https://motorheadmedia.com/long-block/184492229/4-500-hp-rated-462ci-billet-ls-long-block.html This billet LS long block uses a highly optimized, but well-proven LS architecture. The parts are from manufacturers of proven quality, but replacements can be sourced from alternate vendors if the need ever arises. This mitigates the risk of total reliance on a single vendor with their own exotic engine design and sole-source, proprietary parts. Proven conventional architecture also beats exotic in cost, size, weight and complexity. If conventional works just as well, why would you want to…

]]> Engines: GM/Chevrolet: Long Block Sun, 13 Sep 2026 07:50:06 GMT 184430081 https://motorheadmedia.com/long-block/184430081/boost-ready-big-block-chevy-555ci-long-block.html PHOTOS INCLUDE OPTIONAL BILLET INTAKE MANIFOLD This 555 cubic inch BBC long block is built to handle serious boost. It features top quality parts conbined with precision CNC machining and assembly that was recognized by Engine Builder Magazine's with their top award. The foundation is a Dart Big M, 10.2 inch tall-deck block with billet steel main caps for extraordinary strength. The block undergoes multiple machining steps on our 4-axis CNC which has a precision of 0.0002 inches before moving…

]]> Engines: GM/Chevrolet: Long Block Sat, 12 Sep 2026 07:50:05 GMT 184630056 https://motorheadmedia.com/long-block/184630056/370ci-ls3-port-iron-long-block-630hp.html This digitally remastered 370 cubic inch LS long block delivers a lot of bang for the buck. Our CNCs have machined these seasoned GM block, crank and heads to far beyond their original condition. Pairing these parts with superior quality aftermarket components allows us to pull out 630 horsepower on pump gas at a budget friendly price. The 6.0L iron GM blocks are bored and decked on our 4-axis which boasts a precision of 0.0002" and 1/1,000th of a degree. We also engrave and serialize the blocks…

]]> Engines: GM/Chevrolet: Long Block Fri, 11 Sep 2026 07:50:05 GMT 184127686 https://motorheadmedia.com/long-block/184127686/boost-ready-370ci-ls-long-block-afr-ls3-cnc-d-heads.html Looking for some serious power at a great price? Look no further! This 370ci boost-ready LS long block is designed to easily handle more than 1,000 hp. The AFR, LS3, 6-bolt, 12-degree valve angle castings provide great airflow and were built to handle boost. Our process for machining these heads includes CNC porting and combustion chamber machining on our 5-axis with CNC valve job and bowl bowl blend on our Newen CNC seat & guide machine (see Engine Machining playlist on our YouTube channel…

]]> Engines: GM/Chevrolet: Long Block Fri, 11 Sep 2026 07:50:05 GMT 182254994 https://motorheadmedia.com/long-block/182254994/396-427-454-s-blks-and-heads.html if your looking for a 65 to 75 big block many heads and blks in stk many date codes available contact vintagebigblocks.com david has 300plus in stk or call 716-763-6200 he has your muscle car needs we can complete and dyno them also stevesautoandmachine.com

]]> Engines: GM/Chevrolet: Long Block Fri, 11 Sep 2026 07:50:05 GMT 184055205 https://motorheadmedia.com/long-block/184055205/454-chevy-engine-for-sale.html 454 Engine For Sale 500+ HP and 550+ Ft Pounds of Torque -Gen 4-4 Bolt Main Block -Fully Prepped and Machined -Tanked, Shot Peened, Bored, Honed, and aligned Honed -ARP Main Bolts -Cam Bearing -Brass Freeze Plugs -4340 Forged Scat Crank -Scat 4340 "Dimple" Rods w/7/16" Bolts -Speed Pro Forged Pistons -Fully balanced rotating Assembly -Clevite H Series Main and Rod Bearings -Nodular Iron Harmonic balancer -Scat SFI Flexplate -Total Seal Moly Rings -Melling HV Oil Pump w/HD Steel Drive -Fel-Pro…

]]> Engines: GM/Chevrolet: Long Block Tue, 08 Sep 2026 07:45:11 GMT 184331244 https://motorheadmedia.com/long-block/184331244/364-cubic-late-model-engine.html 364 Cubic Inch Steel Block Late Model Engine. Complete ready to sit in car and race. All light weight parts. Cost $42,000 to build.

]]> Engines: GM/Chevrolet: Long Block Fri, 04 Sep 2026 07:45:14 GMT 184370510 https://motorheadmedia.com/long-block/184370510/502-built-by-chuck-smith.html 502 racing engine built by Chuck Smith. I'm asking $22,000 or best offer maybe even do some trading any questions feel free to contact me 706-851-4200 I'll do what I can to answer. Nickel block two-piece seal. Profile aluminum heads, Port matched old deck SS valves. Erson full roller cam 700 lift. Erson roller rockers, wiseco forged pistons 80 over. H beam forged rods, 4340 forged crank scat kit. A r e bolts on studs, high valve oil pan and pump. Edelbrock 2-4 ram aluminum intake, TIG weld…

]]> Engines: GM/Chevrolet: Long Block Fri, 21 Aug 2026 07:45:12 GMT 184822837 https://motorheadmedia.com/long-block/184822837/408-ls-stroker-rated-built-for-1000-hp-intake-to-oil-pan-.html So it took me about 2 years building this motor I eventually was going to pro charge it next year so that’s what I built it for, it has 0 miles I havnt tuned it but it runs , I bought every expensive part that I could, has a custom cam . If you’re seriously interested give me a text 9015040555. Would be a great race engine , also this is a trans and motor set up I paid 2500 for a rebuilt 4l60 rated for 700 hp was going to change it out once I went pro charger

]]> Engines: GM/Chevrolet: Long Block Wed, 19 Aug 2026 03:15:43 GMT 184822820 https://motorheadmedia.com/long-block/184822820/custom-dart-built-598-designed-for-ultra-reliability..html Designed and built back in 2013 by myself and Richard Maskin, truly a work of art. It was the first four ring piston design Dart ever built. Was Dyno tested at Dart and I ran it about 15 minutes, so practically new engine. I still have the email correspondence back and forth between Dart and myself. Has liquid cooled exhaust manifolds and a turbo on top of each one. Original price for short block was $15,000 back in 2013 before I added liquid cooled exhaust manifolds, turbos, liquid cooler…

]]> Engines: GM/Chevrolet: Long Block Tue, 18 Aug 2026 20:28:09 GMT