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Thread: first serious engine build

  1. #1
    Junior Member SHOW GUEST
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    first serious engine build

    hi every body I'm new here and thought I might get good advice. I've built several mild sbf motors in the past but this is my fist race motor build. tell me what you think of a 408 with afr 225 heads, solid roller with around .650 lift, 12.5 compression, super victor intake, 950 Holley, stainless steel rockers, and forged rotating kit. this motor will be going in a 64 comet that's mainly a track car but could see some very limited street time.

  2. #2
    Senior Member RACING JUNKIE
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    welome,nice combination and in a comet, nice. thats alot of lift for a small
    blk, it's going to sound like the motor wants to crawl out of the
    car, i guess with that compression you'll be buying plenty of
    racing fuel to run the monster, i'll bring the beer and come over
    and give you a hand, good luck bud :wink:

  3. #3
    Senior Member RACING JUNKIE
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    If you are talking about a sbc, then it sounds good!

  4. #4
    I've got a '72 Block 351w thats gonna be a 408 for my coupe.Similar to your combo with exception of a Hydraulic roller for nitrous,about 10.75 to 1 compression and some afr's.My last little 308 with a 150 shot went 10.40 on pump gas through the muffs,so the 408 with a 250 shot should put me in the high 9 range.

    Your combo sounds about right for a mostly race motor.Should scream!.Just remember 3 inch mains dont like rpm in the phord motors... :wink:
    My old [email protected]

  5. #5
    Junior Member SHOW GUEST
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    kwkracing I don't know about a small block ch ch ch chev chevy. dang that was hard say. I've got a few more questions though. would it be better to have a single pattern cam, would 1 3/4 headers be the right choice or 1 7/8, would I need a torque converter with a anti ballooning plate to use with a trans brake. also does a main support girdle really help that much. when I can I'll get some pics of the ol merc on here. thanks for the help guys.

  6. #6
    Senior Member RACING JUNKIE
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    Definately the anti ballooning plated converter with a transbrake, i'd go with the larger headers. I don't know anything about the Ford cams, but i do know that Speedway motors sells lot's of the main gurdles for the ford sm/blk.

    JMO

    Zip.

  7. #7
    Senior Member MASTER BUILDER
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    I built a few 408 windsors a while ago and do remember camshaft choice was critical to get right.

  8. #8
    Senior Member RACING JUNKIE
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    Main guidles are a must with any high hp sbf, the 351w blocks are not as bad as it's little brother 302 but anything over the 450 mark is in need of a main girdle, it's definetly worth the added cost, that is unless you like breaking parts. :wink:

    Cp
    ***IN GOD WE TRUST***

  9. #9
    Senior Member RACING JUNKIE
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    I like it... but I am no expert on sbf's... I can tell you that it would be even better if it had a straight axle front (64 Comet's make GREAT gassers!!) w/ a 4spd, & a tunnel ram maybe... oh and fender-well headers too. Welcome to forum & good luck on that awesome project!! Scooter
    "I would walk through hell on Sunday before I fear the enemy"

  10. #10
    Junior Member SHOW GUEST
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    thanks for the advice. I will be putting in the main girdle. I don't know what kind of power it's gonna make but I hope over 550. the cam is gonna make or brake it so I need to choose carefully. I just ordered a rod & custom ifs it will be here friday, anybody got any tips or tricks to help with the install. next thing to buy is wheels but can't decide between torq thrust d or custom steel wheels. right now I'm leaning towards the steelies. anybody got any more suggestions I'll always appreciate it.


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