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First Dyno run on my 383.

Discussion in 'Photos, Videos, etc.' started by ZZ4CutlaSS, Oct 27, 2016.

  1. ZZ4CutlaSS

    ZZ4CutlaSS Master Mechanic

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    . First Dyno run a engine I put togther. I started with a GM Performance HT 383. Added a High Volume oil pump, windage tray and Mildone 7qt oil pan. Comp Cam XR288HR 288/294, Lift .520/.540 Camshaft with GM Performance LS7 lifters. Comp Cam double roller timing chain and .080 thick wall solid push rods. Comp Cam 3 peice timing cover. Up top AFR 1054 210cc CNC ported Aluminum heads. Compression is around 9.5-1. Arp rocker studs and Cam matching springs locks and retainers. Finished off with Comp 1.5 ratio Magnum roller rockers on the Intake side and 1.6 on the Exhaust. That added 10hp on the Dyno. Edelbrock Vic Jr Intake port matched by me. Used all Felpro gaskets and ARP fasteners. SFI Approved Balancer and Flywheel. Spark by MSD billet Dist and wires. For Dyno only I used my Holley 850 HP XP then Later to Terminator EFI. Plan is to add a Pro Charger that's why I kept the Compression low. It Made 490hp at 5,800 rpm and 462 ft lbs of torque at 4,700 rpm on 92 octane fuel and 36 degrees total timing. Thanks for Watching.
     
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  2. pontiacgp

    pontiacgp Rocket Powered Basset Hound

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    nice, you have to be happy with those numbers....:)
     
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  3. ZZ4CutlaSS

    ZZ4CutlaSS Master Mechanic

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    Thanks I was so nervous and more Excited I took it home in one Peice.
     
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  4. pontiacgp

    pontiacgp Rocket Powered Basset Hound

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    I would be too, I've seen a few new rebuilds blow up. Yours sounded really good and great numbers on the A/F mixture with that carb.
     
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  5. autonaut

    autonaut Greasemonkey

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    Nice build and great numbers. Congrats on your new engine:)
     
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  6. Opie Knievel

    Opie Knievel Moderator
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    Hell yeah. Good strong numbers. You're so close to 500hp you can taste it. Lol.
     
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  7. ZZ4CutlaSS

    ZZ4CutlaSS Master Mechanic

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    Yeah me too kinda kept that in the back of my mind. We had to play with it for awile to get it at a safe level. We jumped like 5 numbers on the jets and up a couple sizes on the air bleads. Chuck the Dyno master was in love with that carb.
     
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  8. ZZ4CutlaSS

    ZZ4CutlaSS Master Mechanic

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    Thanks Man...I built it earlier this year. It pushed my 84 cutlass into the low 12's in the 1/4 mile.
     
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  9. ZZ4CutlaSS

    ZZ4CutlaSS Master Mechanic

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    I'm sure it is now with the EFI. We also ran it on the Rich side and kept the timming safe. I ran 110 at the track and more timing and spark.
     
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  10. Kwik_Cutty88

    Kwik_Cutty88 Moderator
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    Congrats! Those are some nice numbers. That should be a really really stout street engine. I'd love to see the dyno graph.
     
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