Don Terrill’s Speed-Talk

by cpmotors » Thu Apr 25, 2024 5:15 pm WOW, that Z28 intake really kills the flow! I cut the divider down a bit on one last summer for a LT1 restoration build and it picked up some power. the outcome Trend for all the times i've tested Milling Divider down was : a 1.000" inch thick Open or 4-H...

Doug_Hughes_461X_Flow_comparisons_highlighted.jpg Doug_Hughes_SBC_461X_Test#1_Cyl#3_April_24_2024.jpg Doug_Hughes_SBC_461X_Test#2_Cyl#3_750Carb_Z28Intake_April_24_2024.jpg Doug_Hughes_SBC_461X_Test#3_Cyl#3_750Carb_Z28Intake_April_24_2024.jpg Doug_Hughes_SBC_461X_Test#4_Cyl#3_750Carb_#7501Intake_Apr...

461xPluggingSparkPlugCoolantHoles_1.jpg 461xPluggingSparkPlugCoolantHoles_2.jpg 461xPluggingSparkPlugCoolantHoles_3.jpg 461xPluggingSparkPlugCoolantHoles_4.jpg 461xStormVulcanAngleMilling_1.jpg 461xStormVulcanAngleMilling_2.jpg 461xStormVulcanAngleMilling_3.jpg 461xStormVulcanAngleMilling_4.jpg  

Edelbrock7501AirGapDualPlaneMoroso4HoleSpacer_1.jpg Edelbrock7501AirGapDualPlaneMoroso4HoleSpacerHolley750_1.jpg Edelbrock7501AirGapDualPlaneMoroso4HoleSpacerHolley750_2.jpg StockShapeHolley300-25Manifold_1.jpg StockShapeHolley300-25ManifoldMoroso4HoleSpacerHolley750Carb.jpg StockShapeHolley300-25M...

FelPro1205_Port_Match_1.jpg ShopRags_stuffed_into_Intake_Ports_2.jpg Z28_DualPlane_Manifold_1.jpg Z28_DualPlane_Manifold_2.jpg Z28_DualPlane_Manifold_3.jpg Z28_DualPlane_Manifold_4.jpg Z28_DualPlane_Manifold_5.jpg Z28_DualPlane_Manifold_SideTaped.jpg Z28_DualPlane_Manifold_SideTaped_Holley750Carb.j...

those #461X Heads are much better looking now , than the Pics above are in previous Posts ! i went to 320-Grit finish in Bowls and Chambers instead of wornout 120-Grit Roll as in Pics reason : for these old cast-iron Heads to help stop a crack from forming plus some little rust spots kept popping up...

.... Sorry , i just saw this Thread today ! :oops: just had a new Dynomation update : Version 6.03.37_CD_DL on 3/29/2024 this new Dynomation version predicts these Results using PipeMax v4.90 Harmonic Lengths for Peak TQ occuring at 3900 RPM and for Peak HP occuring at 5900 RPM Power Band width = 20...

vortecpro wrote: ↑Sun Apr 21, 2024 6:20 pm Larry

I just bought a brand new set of 292 castings, I'd very much like to send them your way!

Email me all the Engine details for those #292 Turbo castings

Larry, I'm a bit confused. WHAT IS THE NUMBERS MATCHING TOO? Does this have a 1969 Camaro VIN stamped on the block? WAY more than 71 as a least 75/77 made there way into cars, 69 Camaros and at least 7 known Vette's, 3/4 are said to be OEM ZL-1s. GM did a bunch in Vette test cars too. There's a pic...

Wow, how long have you had that jewel laying around or is this something GMPP is selling now? Chris at C & S Performance bought it and sold it to his Customer its original COPO 1969 Camaro version , should have more Pics + Dyno video/sheets soon i'll ask for more details . Chris is not 100% sur...

COPO Camaro original ZL1 version 427cid + just Dyno tested made 530+HP ??
with very thick Headgasket to lower CompRatio for Pump Gas ,
with new Cam Motion Low-Lash Solid Roller Cam , 514+ Peak TQ

Original OEM ZL1 427cid numbers matching ( Winter's Foundry SnowFlakes )(Camaro version) going into 1967 Chevelle restoration brand new ZL1 Holley Carb in Box never used , never had Gasoline in it substituded ProSystems Holley Carb has original Transitorized Tach Drive Distributor, not used here , ...

 

racear2865 wrote: ↑Wed Apr 17, 2024 12:03 pm I am trying to reach Pipemax. I purchase the 3 package and I have on 1 pc. Need to install on another pc. Instruction was on old email that ATT canceled because it was spammed. How do I proceed from here. 76 years old and still lost

i just sent you a Private Message