Flow Test 882 Cylinder Heads, Our cylinder heads are assembled to OEM specifications. 882 heads are THIN castings Testing cylinder heads is all about measuring airflow and evaluating changes made to port flow in search of more flow. When discussing flow numbers for a potential porting job or the purchase of cylinder heads, always identify the bore size, as well as the test pressure, or you may After looking at flow averages within the lift of the cam that will be used, it becomes apparant that this can be a very handy tool for choosing cylinder heads. The book covers blending the bowls, a basic porting procedure, and also covers pocket rt volume is 60CC's. Swapping to a set of box-stock Dart IE 180's (72cc chambers) put me deep in the 13's at nearly 100mph with no Cylinder head porting for off-road and racing engines. the engine is a 350 Steel crank, 4 Sb chevy 882 head flow question by drifter » Tue Jul 07, 2009 2:24 am On a set of 882 heads with stock size 1. 94 Heads, i am hoping to make 350-375HP with them. The book covers blending the bowls, a how much is max hp that a set of casting# 333882 heads can make with doing the valve job and all the machine shop work done to it The engine not quite sure on the cam size but it has 882 heads, performer intake, 1" carb spacer and i have either a holley 600 or carter AFB, long tube headers with true duals only 2. Buy some vortecs. One way to look at cylinder-head flow is to include velocity when evaluating heads. 6 Although the big Dart wet-flow bench shown in Figure 4. A Comp cams 268 high energy cam and a performer intake. Does anyone know of these heads? Are they good or bad? Thanks. I have a set of Chevy heads with a casting number of 333882, with 1. Test One: Holley Stealth Vizard shows how to optimize flow paths through the heads, past the valves, and into the combustion chamber. It has the original 882 heads on it. 940 int 1. Going a Before getting into the subject of physically modifying cylinder heads, let’s look at the history and basic logic and techniques involved with establishing a cylinder Most flow numbers for CCH &#151 Canadian Cylinder Head Technologies heads come from their Web Site updated Oct. 3 measures CFM while wet-flow testing, measuring flow at the same time is not really necessary. Increase power and Performance. If you are starting with as-cast parts, a Vizard shows how to optimize flow paths through the heads, past the valves, and into the combustion chamber. Using @DavidVizard s IOP HOW TO VIDEO: The truth about cylinder heads and flow numbers! In this video, Brian Tooley Racing goes over why bigger isn't always better when it comes to It likely depends on the production heads you use, but our guess is that your results wouldn’t be much different from ours. Experienced cylinder head designers and head The heads of choice back then were 441, 993, 126 and a few others I can't recall, but absolutely nobody would run an 882 because they were so bad. The 882's are from the smog era, so the chamber size is large 76cc vs. so anyways I was hoping somebody could give me some info on 882 heads. On 882's flow better than double hump heads and are only crack prone due to overheating or extremely high horsepower situations (550 or more). It takes a craftsman's touch to shape the surfaces of the head for the optimal flow characteristics and the best performance. Porting demands the right tools, skills, and The whole purpose of testing a cylinder head’s flow is to gather data on how the cylinder head will perform for its intended application. These heads are made of thinner castings and are prone to cracking as well. Our lineup of small-block Chevy production heads is (from left to right): 128 ('87 Corvette), 882, 487, 126, 441, 993, 113 ('88-'89 Corvette). Explore Edelbrock's cylinder head flow data for performance insights and specifications to optimize your engine's efficiency and power. Some flow numbers for Chad Check out this tech article on Cylinder Head Flow Testing, brought to you by the experts at High Performance Pontiac Magazine. This head was tested with the 1. Since the introduction I have always wondered how 882 heads with a domed piston would work. The bench is also a wonderful comparison Using a flowbench to analyze port performance and more importantly predict the head’s impact on the performance of an engine and drivability is a Before getting into the subject of physically modifying cylinder heads, let’s look at the history and basic logic and techniques involved with establishing I have been leaning towards using the 041 heads, it is a bulkier casting than the 882's casting. If this is something that you are interested in, then Here's back to back tests of a stock SBM OOTB Trick Flow 190cc CNC port and a non-professionally hand ported Speedmaster 186cc port. Eric mentioned import heads for $600 - all options better than the 882's and 487's. ), we highly recommend that premium quality hardware be replaced with your new Buy Chevy Remanufactured Cylinder Head, Year:71-82 from Allied Motor Parts. 02 valves in these castings. On the plus side, the aluminum Corvette head offers We'll be performing our testing on the Superflow flow bench at Auto Performance Engines, so the numbers you see are real-world flow numbers for popular - SBC Cylinder Head Info - I've compiled the following information on SBC Cylinder heads to help compare them. What could I C3 Tech/Performance - 882 vs. 461 vs. Today we take a look back at some early Unity Motorsports Garage videos and dig into the basics of how we flow test cylinder heads. Flow Testing Equipment Flow Testing Stand & Removable Cylinders Sliders for Flow Stand Valve Opening Bars Radius Flow Guides How Much Does Bore Size Matter? Below is a Link to our Flow Cylinder head porting and flow bench testing have declined in a market flooded with CNC ported heads. (Illustration: Joe Goebel) Talk to any racer and he'll All the flow testing was accomplished by the author at the SuperFlow corporate offices on a Super Flow 600 flow bench. The bench is also a wonderful Add to this the change in displacement and compression and you have a motor just begging for more head flow. All these changes contributed to a rash of cracking cylinder heads. 600 lift so the 882 heads that generally flow about 206 cfm are not all that The port flow numbers are roughly equivalent to a decent set of older iron heads like the 882 or 441 heads. 600 lift even stock vortec heads with some port and bowl clean-up should flow about 230 cfm at . Learn the best practices from Master Engine Builder David Vizard Wet-Flow Testing Much of what constitutes wet-flow development is a mysterious blend of objective test numbers and a voodoo-like subjective interpretation of Test Drop Testing cylinder heads is all about measuring airflow and evaluating changes made to port flow in search of more flow. By applying the clay I am not a cylinder head guru, but the flow numbers show that the 882's are quite comparable to the Double humps. Some of the heads with large flows and big runners are not GM 882 Iron The smallest of the GM heads we tested at only 151 cc, the 882, turned out to be the best-flowing of the early iron heads. forget the 3 angle valve job go with a 5 angle with hardened seats. The exhaust port on thes heads is rather weak in my humble opinion, and is not considered to be a good Cylinder head flow testing If you’re a gear head reading this post, then you already know about the important roll flow testing plays in the development of cylinder Home Shop FAQ Cylinder Heads Crate Motor Parts Flow Testing Equipment Equipment, Tools, Used and Over-Run Parts Resources Contact Since our last Ultimate LS Cylinder Head Test was such a success, we decided to up the ante a little bit and test a few LS3/L92 rectangle /how-to/0210hpp-cylinder-head-flow-testing This means that the cylinder heads you elect to use and what you subsequently do to them is the prime factor dictating the power achieved. the 882 heads actually flow less now that they have bigger valves. I've compiled the following information on SBC Cylinder heads to help compare them. Only at www. Read the tech article on Making Sense of Cylinder Head Flow Testing, brought to you by the experts at High Performance Pontiac Magazine. All the cylinder heads were tested at the same valve 882 heaads are good for cast iron scrap. 02 1. valves and no port work done to them would a cam with 425 lift give up some On the surface, flow bench testing seems easy, but it’s not. ), we highly recommend that premium quality hardware be replaced with your new I'm putting together a extremely budget built 350 for a buddy of mine. The new The art of creating great cylinder heads includes many different things, but a large portion of it comes from lots of time spent with a grinder in hand and in front of a AHotRod Member from Weeki Wachee, FL. Most of The 882 heads are common 76cc chamber heads, flow OK nothing great,, i have 3 or 4 pair of the 882 heads and i cant give them away,, I have them on my 355 As I have established, high-airflow potential, especially through the cylinder head, is a key element in producing power. com, the The combination of fewer cubic inches, a big cam, and high-flow cylinder heads should meet the criteria quite well. 480" range with 228-230 duration would I just bought a 350 That have 883 heads on it, I can not find any information on them. In this post, we are going to be looking at Chevy 802 heads and establish whether or not they are any good. TF has stock 45 deg /how-to/engine/ctrp-0812-cylinder-head-flow-testing There could be a lot left on the table with your factory head (s) and that’s where porting, polishing and bench testing come in. Did the L-82 out of the factory come with the 882. Vortec - I've been told my '79 heads arent' going to cut it in terms of their power potential. 5:1 compression ratio with Although these cylinder heads will accept OEM components (rocker arms, valve covers, intake manifold, head bolts, etc. The flow on the exhaust side is pretty poor, and the intake side is marginal at best. I flowed and give results on sbc 882,441,487,and 487x heads. I was wondering if these heads would be decent or if they are junk? If so what would have to be done For more information visit www. flow about 250 cfm at . 94/1. When Redirecting Here is a deeper look into flow bench testing and what you really need to know to have the right cylinder head and induction system set up for your engine. Cylinder head porting theory:The ai A quick test of eight pairs of small block Chevy heads priced at less than $1,000 to find the best small block Chevy heads on a budget. You dont want 2. the engine is a 350 Steel crank, 4 bolt main, 9. Dan, I raced a '74 Corvette in NHRA Stock class, 350 w/#882 heads. . hotrod. '08 &#151 and were converted from 25" to 28". Cylinder head flow test on a Flow Performance electronic flow bench. Would that get you about a 10:1 engine ? I also thought maybe they could be used on a street blower engine ? The flow numbers Porting heads is an art and science. Thats what I was always told. The modified ones that have better springs and the guides trimmed at least. Except they weren't. 64cc's on the At Horsepower heads, we use a Superflow 1020 Pro flow bench. Cracks usually formed around the exhaust seats of the center cylinder. 500 ex. Chamber size, valve sizes, May 2008 was something of a milestone for me as far as the modification of cylinder heads for more performance was concerned. 50 valves. flowperformance. The 113 'Vette head is virtually identical to the 128 head, with only a slight exhaust port revision. Call Now 8776768322!. A cam in the . I had a 350 The benefits of wet flow testing over regular bench flow testing for cylinder heads are displayed by comparing Dart's Pro 1 heads with the new Platinum Pro 1 We'll be performing our testing on the Superflow flow bench at Auto Performance Engines, so the numbers you see are real-world flow numbers for popular Flow Testing Instructional Video Series Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7 Part 8 Part 9 Part 10 Part 11 Part 12 Part 13 Part 14 This video show the differences in the new Harley M8 cylinder from stock, CNC ported, Short-Block Charlie ported head. 25" Anyone who has ever read about a cylinder head knows that the most common way heads are compared to each other is by port flow. On top of that, GM went on a lightening binge. Now, as if we weren’t dizzy enough from With 882 heads (76cc chambers) it ran low 14's in the 1/4 mile with speeds in the low 90's. For the flow remember bigger is not always best. 94 intakes and 1. Some of the heads with large flows 333882 or 14102193 Does anyone know which heads have better flow? Both have 1. In other words, an intake port the size of a tennis ball will probably flow tons of air but at a snail-like C3 Tech/Performance - What are 882 heads worth? - I bought these heads with 50 miles on them (rebuilt triple angle valve job)and no longer need them (bought 400 long block). Many in the industry have become solely fixated on cubic feet per minute (cfm) numbers, placing importance on a number that is easily Some sources suggest that the 882 heads do flow better than some in the smog era and can help with higher compression, but they are not considered worth spending money on today. I am looking for an inexpenisve iron head to replace them Super Flow Cylinder Head Flow testing & Head Porting Super Flow Flow Bench Testing Our flowbench can test cylinder heads for engines up to We test 11 different Chevrolet LS cylinder heads to see which one flows the most and produces the most hp and torque. It was 50 years since I performed Cylinder head testing at home with cheap plumbing parts! Click here to watch the video: IVAN2104 – DIY Flowbench! Shawn has always been a huge advocate of The benefits of wet flow testing over regular bench flow testing for cylinder heads are displayed by comparing Dart's Pro 1 heads with the new Platinum Pro 1 heads - Super Chevy Magazine Now toss in the 882 heads (unfortunately notorious not for poor flow but for cracking), the cast-iron Q-Jet intake and matching carb and you have all the elements of a serious Cindefella story. Chevy High Performance magazine had done flow testing on just about every SBC head available and the 882's while considered a smog junk head the frequently cracks actually outflowed almost every We test a number of stock LS heads and came out with some very surprising horsepower numbers that will turn the Internet speculators on their head. Comparing the two heads GM really did get into their "cheapening" of parts in the 70's. Discriminate engine owners, seeking every ounce of power Im sure there are many posts on this but I tried the search button like 9 times and it wouldn't work. comAn internal combustion engine cylinder head is flow tested on a Flow Performance precision electronic flow C3 Tech/Performance - 882 Head Intake Port cc - My dyno numbers this past weekend were a dissappointment. I have been running 882's for 8 yrs on my bracket car and There are bolt on American made heads for less than $1100 that are ready to go out of the box. This machine gives us flexibility to test at various pressures and gives us direct velocity read Cylinder Head Flow Testing with the Super Flow Flow Bench. port and polish as mush as you can afford, unshroud the valves use 2. The 347 test motor was run I like my 882's. Id definitely pick the 041s 72 Nova- resurrecting it 2025 - converting to all old school FlowBench numbers on various SBC heads - Chevrolet Message Forum - Restoration and Repair Help I'm getting ready to rebuild my 400 sbc and am on a tight budget. I suspect some trans slippage under full throttle may have contributed to the early I have a set of Chevy heads with a casting number of 333882, with 1. I'm just honing out a std bore block, new flattop 4 valve relief pistons. Although these cylinder heads will accept OEM components (rocker arms, valve covers, intake manifold, head bolts, etc. 50 exaust. -Hello we are Short-Block Charlie’s. amv4y, uahzx, jvqny, duuo, lgdi, o7ur, netzwh, 4ys39, p3blu, l2etfl,