en-us Tue, 27 Oct 2026 12:39:34 GMT 184446550 https://motorheadmedia.com/heads/184446550/dart-ls7-12-degree-6-bolt-bre-cnc-ported-heads.html Dart’s PRO1 LS 12° LS7 aluminum cylinder heads take performance to the next level. These ported cylinder heads offer much higher performance and more versatility than factory designs. This 12° based high performance cylinder head has better airflow, more efficient combustion chambers and more user friendly features than production LS castings. The Dart PRO1 cylinder head retains stock valve angles, stock valve locations and stock valve train mounting with dowel holes to make…

]]> Engine Parts: Heads Mon, 26 Oct 2026 07:50:06 GMT 182995623 https://motorheadmedia.com/heads/182995623/all-pro-bre-custom-ls7-cylinder-heads-for-big-boost.html This is the head we use for all of our big boost engines other than the ones with billet blocks and no water. They have great airflow (see Airflow Chart in Photo Set) and are amazingly strong. Here's why: - 100% virgin Alcoa aluminum ingot with no remelt - Heads have been HIP treated (hot isostatic pressing) for greater strength and dimensional stability - Up to 1 inch deck thickness, 0.75 inch minimum - Enhanced six-bolt design We buy these heads as porter castings and are therfore able to…

]]> Engine Parts: Heads Mon, 26 Oct 2026 07:50:06 GMT 184705516 https://motorheadmedia.com/heads/184705516/chevy-s-b-bowtie-heads-and-intake.html Pair of 18 degree S/B chevy bowtie heads. Professionally ported by Rons porting service. Set up for 2.20 intake valves. Matching 18 degree Intake. Bare heads.

]]> Engine Parts: Heads Mon, 26 Oct 2026 07:45:16 GMT 184837094 https://motorheadmedia.com/heads/184837094/1965-alcoa-aluminum-hemi-k-heads-m-t-valve-covers.html For Sale: Vintage 1965 Alcoa Aluminum Hemi Heads (2531110 REV P) + Mickey Thompson Valve Covers Price: $14,500 CAD / $10,600 USD (OBO) Location: Edmonton, Alberta, Canada (will ship at buyer's expense) Up for sale is a rare pair of vintage 1965 Alcoa aluminum 426 Hemi cylinder heads with historical race shop provenance, packaged together with matching Mickey Thompson curved-corner aluminum valve covers. This is an ideal setup for an authentic A990 Super Stock restoration, nostalgia drag project,…

]]> Engine Parts: Heads Mon, 26 Oct 2026 01:02:50 GMT 184837080 https://motorheadmedia.com/heads/184837080/copo-427-patterson-heads.html Patterson heads off of my COPO 427 NA engine.

]]> Engine Parts: Heads Sun, 25 Oct 2026 16:51:13 GMT 184640867 https://motorheadmedia.com/heads/184640867/bre-cnc-d-brodix-13.5-deg-cathedral-port-ls-heads-for-boost.html We receive these 6-bolt, cathedral port heads as porter castings from Brodix and put them through our machining processes imparting our own designs at each stage. Brodix has incorporated a 13.5 degree valve angle with the Brodix steel intake and Inconel exhaust valves sized at 2.100 and 1.600 inches respectively. The Made in USA castings are produced from virgin A-356 aluminum alloy and have a thick deck to handle nitrous and blown applications. They also make great power naturally aspirated as…

]]> Engine Parts: Heads Sun, 25 Oct 2026 07:50:06 GMT 184640847 https://motorheadmedia.com/heads/184640847/all-pro-cylinder-solid-ls7-heads-for-mechanical-cam.html This is the head we use for all of our big boost, billet block LS engines with no water. The 12-4 All Pro solid casting features reinforced exhaust flange, Borowski custom CNC port and chamber design, custom Ferrea titanium intake & exhaust valves.The spring kit features Manley NexTek valve springs (800 lbs./in. rate; 1.130 in. coil bind height), Manley machined 10 degree bead locks and Manley titanium retainers. The heads are amazingly strong and here's why: - 100% virgin Alcoa aluminum ingot…

]]> Engine Parts: Heads Sun, 25 Oct 2026 07:50:06 GMT 184632018 https://motorheadmedia.com/heads/184632018/afr-ls3-12-degree-6-bolt-heads-with-bre-cnc-porting.html AFR Mongoose LS3 heads heads bring a lot to the party with their 12 degree, 6-bolt design. We buy these heads as porter castings and machine them to perfection on our CNCs. The shapes we impart to the ports and combustion chambers reflect our years of experience on our own engine builds. We know what makes power and also survives the beating of competition. It's not chasing peak air flow at max lift by excessively cutting away the metal around the valve guides. Peak air flow occurs at only one…

]]> Engine Parts: Heads Sun, 25 Oct 2026 07:50:06 GMT 184459746 https://motorheadmedia.com/heads/184459746/dart-pro-1-cnc-ported-360-bbc-cylinder-heads-assembled.html PRICING IS PER PAIR ROCKER SYSTEM IN PHOTOS IS NOT INCLUDED These are the same heads as we use in our Big Block builds like the one in this ad's video. You therefore know that we like them and they work. Another big advantage is that we almost always have them in stock. We buy these Dart Pro 1 BBC cylinder heads as porter castings so that we can do the machining on our own CNCs. The finished heads are therefore not the same as the Dart's. The Dart machined heads are great, but ours flow even…

]]> Engine Parts: Heads Sun, 25 Oct 2026 07:50:06 GMT 184138800 https://motorheadmedia.com/heads/184138800/cnc-ported-stage-iii-gm-ls3-cylinder-heads-bare.html NO CORE CHARGE These seasoned GM LS3 heads have finally been given a chance to breathe after a full treatment on our state-of-the-art CNC equipment. That includes porting on our 5-axis, a CNC valve job on our Newen Contour and getting milled to perfect flatness on our Berco. The port work brings the intake runner volume from 257 to 284cc. The exhaust is increased from 87 to 99cc. Click the BUY NOW link to take a close look at the spin video along with videos of the machining work. We assemble…

]]> Engine Parts: Heads Sun, 25 Oct 2026 07:50:06 GMT 184138746 https://motorheadmedia.com/heads/184138746/all-pro-custom-cnc-ported-ls3-ls7-heads.html At Borowski Race Engines, we use All PRO heads on most all of our big power LS engine builds. Here are some reasons why: - Great air flow (380 cfm at 0.70" lift) as shown in photo set charts - 100% virgin Alcoa aluminum ingot with no remelt - Heads have been HIP treated (hot isostatic pressing) for greater strength and dimensional stability - Up to 1 inch deck thickness, 0.75 inch minimum - Enhanced six-bolt design - Billet rocker rails instead of bosses which we have found to be prone to…

]]> Engine Parts: Heads Sun, 25 Oct 2026 07:50:06 GMT 184778672 https://motorheadmedia.com/heads/184778672/brodix-brx-sr20-heads.html Brodix BRX SR 20 Heads CNC Combustion Chamber Bowls Blended 5 angle valve job Flow 520 on In and 360 on EX Starting at $2995 Bare $4500 Complete

]]> Engine Parts: Heads Sun, 25 Oct 2026 07:50:05 GMT