Building a High RPM 400ci SBC to Replace Broken “Compression Obsession” – Engine Power S10, E6&7 – Car Mod Pros Portal

Our 360ci Small Block Chevy dyno mule is broken! So, we’re going to take the parts we can salvage, put them in a bigger 400ci Small Block and turn it 7000 RPM on the dyno! And we’ll answer the question: how do cubic inches affect power??

00:00 – Intro
03:25 – Test Dyno Run
05:16 – Tech Tip
06:33 – Small Block Teardown
17:44 – Crankshaft Balancing
23:41 – Engine Reassembly
32:49 – Small Block Paint Job
35:01 – E85 Dyno Test
39:14 – Gasoline Dyno Test

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PARTS USED IN THIS EPISODE:

ARP: 8740 Head Bolt Kit
More Info: https://pntv.us/pn_pt_21731_6451714de2d20

ARP: Bolts & Fasteners
More Info: https://pntv.us/pn_pt_21728_645170208fc87

Forney Industries: Forney 190 MP Welder
More Info: https://pntv.us/pn_pt_21727_64516daf13561

Summit Racing: Cometic MLS Head Gasket
More Info: https://pntv.us/pn_pt_21730_6451711527f5f

Summit Racing: ICT Billet Engine Block Torque Plate
More Info: https://pntv.us/pn_pt_21729_645170f194a3f

Summit Racing: Intercomp Racing Valve Spring Tester
More Info: https://pntv.us/pn_pt_21725_6451669c5ac42

Summit Racing: Mahle PowerPak Piston and Ring Kit
More Info: https://pntv.us/pn_pt_21736_645174e78be47

Summit Racing: Billet Steel Flywheel
More Info: https://pntv.us/pn_pt_21734_645174761b8f7

Summit Racing: Harmonic Balancer
More Info: https://pntv.us/pn_pt_21735_6451749a27a84

Summit Racing: Valve Springs
More Info: https://pntv.us/pn_pt_21726_645166baeacab

CWT Industries: Multi-Bal 5500

Sunnen Products Company: SV-15 Honing Machine

ARP: Cam Bolts
More Info: https://pntv.us/pn_pt_21764_646535e994453

ARP: Carburetor Stud Kit
More Info: https://pntv.us/pn_pt_21775_646538b3c51c4

ARP: Distributor Stud Kit
More Info: https://pntv.us/pn_pt_21774_6465385c74616

ARP: Header Bolt & Stud Kit
More Info: https://pntv.us/pn_pt_21776_64653936dbe83

ARP: Main Studs & Bolts
More Info: https://pntv.us/pn_pt_21757_6465341b71644

ARP: Oil Pump Mounting Stud Kit
More Info: https://pntv.us/pn_pt_21773_646537c5dc76e

Holley: Quick Fuel Black Diamond 950CFM Carburetor
More Info: https://pntv.us/pn_pt_21781_64665da06c0d9

Lubrication Specialties: Hot Shot’s Secret Adrenaline R-Series Racing Oil
More Info: https://pntv.us/pn_pt_21780_64665cf288e7a

Lubrication Specialties: Hot Shot’s Secret FR3 Oil Friction Reducer
More Info: https://pntv.us/pn_pt_21779_64665ca4cca34

Total Seal: Piston Ring Assembly Lube
More Info: https://pntv.us/pn_pt_21760_64653551e61ba

Summit Racing: AFR 220cc SBC Eliminator Racing Heads
More Info: https://pntv.us/pn_pt_21767_6465366a64170

Summit Racing: AFR Intake Manifold Gaskets
More Info: https://pntv.us/pn_pt_21777_64665c4b7f382

Summit Racing: Cometic MLS Head Gaskets
More Info: https://pntv.us/pn_pt_21768_6465368d415f8

Summit Racing: COMP Cams Camshaft
More Info: https://pntv.us/pn_pt_21762_6465359f0abe4

Summit Racing: COMP Cams Pushrods
More Info: https://pntv.us/pn_pt_21771_646536e4bdb25

Summit Racing: COMP Cams Valvetrain Assembly Spray
More Info: https://pntv.us/pn_pt_21778_64665c6e2d816

Summit Racing: Fel-Pro Performance Rear Main Bearing Seals
More Info: https://pntv.us/pn_pt_21755_64652a4356317

Summit Racing: Jesel Rocker Arm Shims
More Info: https://pntv.us/pn_pt_21770_646536c5aac1a

Summit Racing: Jesel Rocker Arm Stands
More Info: https://pntv.us/pn_pt_21769_646536a8ab42b

Summit Racing: Jesel Sportsman Series Shaft Rocker Arms
More Info: https://pntv.us/pn_pt_21772_64653784ee5da

Summit Racing: Mahle PowerPak Piston and Ring Kits
More Info: https://pntv.us/pn_pt_21758_646534acc62c3

Summit Racing: OTC Cylinder Leakage Tester Kit
More Info: https://pntv.us/pn_pt_21765_6465362286765

Summit Racing
Scat Pro Stock I-Beam Connecting Rods
https://pntv.us/pn_pt_21759_646534df2475b

Summit Racing: Summit Racing Harmonic Balancer
More Info: https://pntv.us/pn_pt_21766_64653649a0fff

Summit Racing: Summit Racing Non-Adjustable Piston Ring Compressor
More Info: https://pntv.us/pn_pt_21761_6465358165227

Summit Racing: Trick Flow Billet Steel Timing Set
More Info: https://pntv.us/pn_pt_21763_646535c44b537

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26 thoughts on “Building a High RPM 400ci SBC to Replace Broken “Compression Obsession” – Engine Power S10, E6&7”
  1. All 400s i have taken apart have had .0006 tenths of a thouandths or just a little over half a thouandths over size . Oh i should have said up front i have my own engine rebuilding shop, sorry, just got up, i like 400s and build them mainly for torque monsters for street machines,..Dont need really low gears, just lots of torque !

  2. What headers are ya'll using? I need some bigger headers for my Small Block 427 in my 1982 Corvette. I have Schoenfeld 1-3/4 headers with the 3" collectors now. I am using a rack and pinion so I have more header room now.

  3. I spent 2 years building(what i considered the perfect high revving 383 stroker street engine) between ordering a little part's hear and there. I sent a high nickle factory 350 engine block to the best machine shop in my hometown. Getting the cylinders bored .040 over, crank mains line honed, debuting the entire engine inside and out, opening up and smoothing out all oil gallery's and returns, getting the Callies balanced and knife edged crankshaft with lightweight Callies compstar H-beam rod's with Icon 10cc forged dome pistons installed. The heads are Brodix SBC 225cc D/S Heads 68cc 2.08/1.60 valves and beehive springs.
    I broke it in and drove it all summer, adding some Rislone Hy-per Cool Super Coolant additive to water only. We'll winter came around and I checked all my toys to make sure they had antifreeze in them. We'll beings the coolant additive is the same color as antifreeze, I didn't pay it no attention. Needless to say after freezing temperatures both sides of my block cracked in multiple places………..I felt like throwing up when I seen that lol…… after saving for half the year i replaced the cracked factory block with a world products aluminum block.
    6 years later and thousands of 8,000 rpm pulls it still running strong.

  4. If you ever have that much trouble taking off a cylinder head, first make certain you got ALL the bolts. then, undo the rocker arms so every valve is closed, grab a leakdown tester device that lets you pump air into the cylinder, and find a cylinder at TDC and give it some air. unless the head gasket is blown or the piston rings are gapped wide open, the air pressure might be enough. Also, it's a lot easier to slip the camshaft in before the crankshaft.

    Put your block on the floor, bellhousing-side down. Gravity will be your friend as you drop the camshaft in vertically, and you can do this dry, smearing on lube as you guide it past new cam bearings by reaching into the crankcase. now your lube stays inside the crankcase instead of leaking on your shoe. Now use an engine hoist to get it up in the air, bolt on the apparatus from your engine stand so that you only have to guide it into place on the stand rather than hang the engine and try to get every bolt to match the stationary engine stand.

  5. Help me help my dad we have go some one build a old DZ 203 OUT of a 327 chevy block we put it in and was gonna brake it in and only had 5 min and it wasn't right I Checked the oil and they where metal shaving in it and we took it back to the builder but I hope it will get built right or if not wished you would build it and put it on your Dino and help us. Street and drag

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