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ProMaxx SBF 210cc CNC Ported Cylinder Heads. $ 1,435.00. The Shocker 210 CNC SBF heads are tops in the industry. Compare performance and price and you will see it is no contest. Flowing over 328 cfm through only a 210cc runner will make the power you need from your big cubic inch small block Ford. Go out and shock the competition.ProMaxx 9218S Project X Aluminum Cylinder Head Features: Fully assembled with valve springs, steel valve spring retainers, Viton valve seals, 3/8 in. rocker arm studs, and guide plates Valve springs for use with a Solid roller camshaft with a maximum valve lift of .700 in.The MAXX Series is taking the affordable performance cylinder head to the next level. There is no comparison in the market. Our new ultra smooth casting made of Grade A 356-T6 aluminum is precision CNC machined to create the perfect platform for our new runner and chamber designs. This combined with our 5 angle competition valve job, diamond ...

ProMaxx Project X 92198S Aluminum Cylinder Heads Features: Cast from 356-T6 ultra-smooth aluminum with larger valve spring pockets and runners designed to be both accurate and precise. Straight spark plug angle uses a 14mm .750 in. reach spark plug such as Autolite AR3934 (sold separately) or equivalent.Our research indicates the 1973 340 engines used a large, 73cc chamber to reduce the compression ratio to 8.5:1. While this reduced NOx output for emissions, this loss of compression really hurts power. The rule of thumb with compression is that, in the range between 8.0:1 and 12.0:1 compression, one full ratio is worth approximately 3 to 4 ...Nov 21, 2015 · A set of heads will be $1995 shipped in the lower 48. Each set will be built to order for customer. Mr. Foxwell will be the only one doing the work. The base price includes: Parts: New Castings. Choice of 2.250 or 2.300" intake and 1.880 Exhaust. PAC Springs for Hyd or Solid Roller. The final touch was an MSD distributor and ignition amplifier. Run with the ProMaxx heads, the 393 stroker produced 558 hp at 6,400 rpm and 512 lb-ft at 5,000 rpm. Peak power was raised by 171 hp and occurred 1,400 rpm higher, while peak torque jumped by 51 hp and occurred 1,500 rpm higher. Equipped with Hooker headers, the 393 stroker was run ...

Part Number: N/A Category: Project X Series. Features. Flow Chart. Cylinder Head Options. Technical Specs. Additional information. Ultra-smooth 356-T6 Aluminum Casting. Competition …Maximum quality, maximum performance, and minimum pricing--PROMAXX Maxx Series SBC cylinder heads take affordable power to the next level. With ultra-smooth Grade A 356-T6 aluminum castings that are precision CNC-machined, these small block Chevy heads deliver awesome air speeds with super-efficient chamber designs to produce the power and ...Dec 3, 2020 · 75 posts · Joined 2021. #4 · Jan 21, 2021. kjb302ho said: thats a big negative. promaxx are great heads for the money, they come with a good valve train and pac springs. I bought my second pair over black friday. Good to know. I just bought a set of Promaxx 180 cc heads with the springs that say good up to .600 lift. ….

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Small Block Chevrolet (SBC) Cylinder Heads available in a large range of valve sizes to suit 185cc, 190cc, 195cc, 215cc & 225cc Intake port volumes to either a 64cc or 72cc Exhaust port volume. GM Vortec Cylinder Heads in a 185cc/64cc available in bare or assembled. Small Block Ford (SBF) Cylinder Heads in a 5 angle 2.02/1.60/60cc. Ford 6.0L ...Series. Promaxx Performance continues to evolve with the Project X lineup and has raised the bar on the competition. There is NO AS CAST head on the market that can …More complex pieces with moving parts like heads though are a whole different ball game lol. My only concern is I may have to have them milled to keep my compression ratio though. I was at 10.14:1 with the .015" gasket but they recommend a .040" gasket for the aluminum heads.

PROMAXX Performance Project X small block Chevrolet cylinder heads have the right stuff to perfectly fit your budget build with abundant power. The economical "As-Cast" aluminum versions feature ultra-smooth 356-T6 casting, precision machining, and an array of assembled options, as well as being available bare.ProMaxx 9205 Project X Aluminum Cylinder Head Features: Cast from 356-T6 ultra-smooth aluminum with larger valve spring pockets and runners designed to be both accurate and precise. Uses a 14mm .750 in. reach spark plug such as NGK R5671A-7 (sold separately) or equivalent.

kansa football ProMaxx Project X 9197A Aluminum Cylinder Heads Features: Fully assembled with valve springs, steel valve spring retainers, Viton valve seals, 3/8 in. rocker arm studs, and guide plates Valve springs for use with a hydraulic roller camshaft with a maximum valve lift of .600 in. ProMaxx 9185S Project X Aluminum Cylinder Head Features: Cast from 356-T6 ultra-smooth aluminum with larger valve spring pockets and runners designed to be both accurate and precise Straight spark plug angle uses a 14mm .750 in. reach spark plug such as Autolite AR3934 (sold separately) or equivalent university scholarsozark trail screen house 13x10 With our tuning finally dialed in, the ProMaxx BBC heads demonstrated their worth on the 572 stroker by producing peak numbers of 850 hp at 6,800 rpm and 719 lb-ft of torque at 5,500 rpm. That’s what we call getting Maxxed Out! Sources: ARP, Arp-bolts.com; ATI, Atiracing.com; COMP Cams, compcams.com; CP Pistons/Carrillo Rods. ku 5 0 75 posts · Joined 2021. #4 · Jan 21, 2021. kjb302ho said: thats a big negative. promaxx are great heads for the money, they come with a good valve train and pac springs. I bought my second pair over black friday. Good to know. I just bought a set of Promaxx 180 cc heads with the springs that say good up to .600 lift. george mc governdeluxe fun pool tractor supplykwahn drake Series. Promaxx Performance continues to evolve with the Project X lineup and has raised the bar on the competition. There is NO AS CAST head on the market that can outflow these heads PERIOD! We have done our homework and produced what we believe is the best as cast head-on at an affordable price. weather red springs nc Checking out a pair of Promaxx 200cc heads I just purchased from Jegs. Ordered them at 5:00pm on Friday and received them at 11:00am Saturday morning. Damn g...Your vehicle’s cylinder heads are the lungs of your engine. Since your engine is one large air pump, the more efficient the cylinder heads, the more power the engine can make.Way back when the Ford Flathead ruled the world, hot rodders saw the benefit from adding performance cylinder heads.Edelbrock heads, among many others, were added in the … ku play todayauto bohn family motorsjbbrown ProMaxx 9186S Project X Aluminum Cylinder Head Features: Fully assembled with valve springs, steel valve spring retainers, Viton valve seals, 3/8 in. rocker arm studs, and guide plates Valve springs for use with a hydraulic flat-tappet camshaft with …