1st track testing of the alum 350 head on this forum

Discussion in 'Small Block Tech' started by partsrparts, May 17, 2021.

  1. partsrparts

    partsrparts Silver Level contributor

  2. Fox's Den

    Fox's Den 27 years of racing the same 355 Buick motor

    Cool, got a couple more years and I will be with you in that then I can do some extra to this motor that is in need of a surprise. Keep working on it. Take the bars off and let er rip!!

    Forgot about something, have you ever checked out your pinion angle as this will let those tire spin if out of wack
  3. Mark Demko

    Mark Demko Well-Known Member

    Sounds like the trans is slipping if the rpm jumps during the 1 to 2 shift
  4. partsrparts

    partsrparts Silver Level contributor

    Update. New Hughes trans. Last race of the year was this past sat. (dec. 4th).
    reaction .069
    60ft. 1.87
    1/8mi et 8.45 converted to 1/4 13.46
    1/8 mph 81.47 1/4 101.02
    DA 4500ft
    sea level 12.94, 105.09

    10to1 comp, stock crank and rods resized with polished crank and rotating assembly balanced
    TA 212 roller with 1.65 roller rockers
    TA SP3 with Holley 750 DP
    TA HEI
    TA 1 5/8 headers
    Hughes performance TH 400
    8.5 rear with 3.23 posi
    255/60 15 MT drag radials
    Calvert 90/10 front shocks, no sway bar

    Pulls strong to shift point of 5500
    Reidk, 73 Stage-1, walts72 and 9 others like this.
  5. Fox's Den

    Fox's Den 27 years of racing the same 355 Buick motor

    you should be able to spin to 6200 easily. nice job! got a 1.87 60 ft put a 373 gear in there and be a street terror.
    No Lift likes this.
  6. Mark Demko

    Mark Demko Well-Known Member

    Good to hear some track times with the aluminum heads!
    Keep 'er going:cool:
  7. partsrparts

    partsrparts Silver Level contributor

    This winter's plan is 3.73 gears and the building of a new short block,(I have 2 spare 350 engines), that will handle 7,000rpm.
  8. No Lift

    No Lift Platinum Level Contributor

    Single plane intake, aluminum heads, roller cam. Shifting at 5500 rpm? You're joking right? Unleash that baby and get 'er up above 6000 rpm. Also at higher elevations your effective power is down as can be seen by the DA. Forget a new shortblock. If you don't plan on going to sea level tracks regularly, I'd go with 4.56's. Even if you do just run taller tires at sea level.

    Otherwise looking good!
    Mart likes this.
  9. partsrparts

    partsrparts Silver Level contributor

    I'm hearing that the stock 68 bolt and nut rod bolts won't handle anything over 6000rpm, that's why I went with the 212hr cam. On the gears, I don't know if I want to go that steep. I still want to be able to drive it for distances at 65-70 mph.
  10. sean Buick 76

    sean Buick 76 Buick Nut

    Yes I wouldn’t rev a stock rod engine over 6000 very many times personally it seems smart to keep the revs down till the good short block is built. I would keep the 3.73 gears unless adding an overdrive trans.
  11. Fox's Den

    Fox's Den 27 years of racing the same 355 Buick motor

    you didn't use the 73 up capscrew rods when rebuilding?

    The 373 is about max if you do not have a 4 speed auto, I was running at about 3 grand with the 373 to stay at 65.
    I would put in a 2004R trans and don't look back then you can go up to a 411 and it will scream with your light car.

    you should have not put the goodies if you did not upgrade that bottom end. The SP and the alum heads Want you to go past 6 grand that is a given there especially with the SP3.

    If you have the old school rods Yeah I would not go past 6 grand But has anyone you know blow up a 350 with 68 rods
    It is usually crappy oiling system with no mods done and too big of clearances.

    I mean really how many people have blown up a 350 Buick because of rod failure
    First you got to get them past 6 grand Hey no guts No glory lol
  12. Mark Demko

    Mark Demko Well-Known Member

    I was watching a vid on You Tube, a trade school was running engines WOT, no water till they quit, they had a Buick V6 go go go go go, shooting flames out the manifolds. still going till it seized up, no rods came out.
    Small block Chevy, go go pop, rods thru the side of the block, LOLOLOLOL
    Max Damage likes this.
  13. gsjohnny1

    gsjohnny1 Well-Known Member

    6000 rpm......chump change. 1st 30 over had hypers and stock rods. 7500 was no issue until i hit 10k and the wall.
    again, if you build it right.........
    Mart and Max Damage like this.
  14. Mart

    Mart Gold level member

    Post the link......
    Mark Demko likes this.
  15. Mark Demko

    Mark Demko Well-Known Member

    Its the last two engines, the Buick V6 sounded good till the end:D
    PGSS likes this.
  16. Fox's Den

    Fox's Den 27 years of racing the same 355 Buick motor

    and you thought you could blow up a Buick it just seized up
    If that translates to a 350 Engine what you all worried about lol
  17. Bens99gtp

    Bens99gtp Well-Known Member

    That's cool.......even with burnt ass wires the little B purred on..the sbc only ran aboutv2 mins.....but itbsounded bad from the word go
  18. Reidk

    Reidk Well-Known Member

    how much mechanical advance does your distributor allow? I'm using a proform with 22 degrees. I can only run about 14 degrees advance with my distributor for a total of 36. Would like to run a little more initial...Dont mean to hijack your thread, just curious about the TA distributor.
  19. gsjohnny1

    gsjohnny1 Well-Known Member

    what's the rpm (SP1) drop between gears, anybody? i know with hi 4 gears, the drop is about 500 and right back to redline. whatever that is..
  20. telriv

    telriv Founders Club Member

    Should be around 32* mechanical without vacuum advance. Vacuum advance should add about 8*-12* for a total of 40*- 44*.

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