New Cylinder Heads arrived!
Edelbrock RPM 440's for my 383 were delivered today and it felt like Christmas, all over. Only took 4 days from Mancini's. I also got the Pro Magnum roller rockers.
Anyone care to hazzard a guess as to how much time it'll shave off my ET ? MPH increase ? I'm going from stock 906's and steel stamped rockers. The best ET I had last season was 12.024 @ 112.4 |
:-k 11.43 @ 127 :3gears:
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Are you just bolting them on and going racing? If so, I'm gonna guess 11.78.
Are you doing any tuning to go along with the new heads? If so, my guess will be 11.53. |
11.70s?? Better get ready. It may quit snowing someday ??
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I'll say 11.60s
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Hummm. So far the guesstimates are between 11.43 and 11.78. I'm thinking 11.50 to 11.55 That would still be quite a leap.
Out of the box, they look pretty good, just gonna clean up some minor casting flash in the ports. Yeah, Mike, some tuning work will definitely be in order when I finally make it to the track. For now, just hoping for a break in the weather. |
11.87
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New cam to the equation...
Ordered a Crane solid cam today; 248/258 @ .050, 540/560 lift, 108 LSD.
Adding Pro Magnum roller rockers with the Eddy heads. Looking to get some revised estimates from you guys as to ET and MPH. Here's the rest of the combo: '69 383 block, stock bore Torker2 intake 750 Holley (worked, flows 930) jets 78 primary + 80 secondary Harwood scoop with sealed air tray MSD 6AL with MSD distributor + Blaster2 coil plug gap .045, AR3924, total timing 37deg, all in @2400 Maziere electric water pump Moroso crankcase evacuation kit Hooker Super Comps, 2" prim + 3.5" collectors Motor plates, front and mid Milodon 7 qt oil pan with baffle AFCO aluminum radiator Flaming River manual steering box Autometer guages and Tach Kirkey Pro Street aluminum seat 12 pt roll cage with swing out side bars Hurst Quarter stick, reverse shift pattern Cheeteh manual VB B&M diffuser type tranny cooler TCI 10" 3600 stall convertor Steel driveshaft 3.5", 1350 Series U joints 8.75 rear, 35 spline Moser axels, 4.56 gears, full spool CE ladder bars SS leaf springs with housing floaters 90/10 frt shocks, 50/50 rear 6 cyl torsion bars Welded subframe connectors MT slicks 29.5x11.5x15 4 gal fuel cell, 120 gph Summit fuel pump Dual batterys wired in series Fiberglass bumpers Fiberglass lift off hood Wildwood discs in rear, factory discs up front So far, I've had a best of 12.024 @ 112.4 1.66 60" time Leave @ 1800 rpm, shift @ 5600 What do you think it'll run? |
What cam did you have?
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I'll be going from a MP .509 hydraulic.
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