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I'm the proud owner of a 454!!! Now lots of questions

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Blazer79, Mar 31, 2001.

  1. Blazer79

    Blazer79 1/2 ton status

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    I\'m the proud owner of a 454!!! Now lots of questions

    Yesterday I bought a 454 engine. It cost me $322, including a starter and a pair of Tri-Y headers!! It came out of a tow truck. They removed it for a 6.2 diesel because diesel gets 15% off in my country. The guy swares it's in excellent condition.

    I was unable to get the casting numbers because the room was too dark and there was too much crud on it. I'll go pick up the engine next week and have it pressure-washed.

    Since I stared my shade-tree mechanic carreer, I always tried to learn about sbc, not about bbc. So now I have a few questions:

    1) This engine has a manifold for a 2bbl carb. Why did GM use such a small carb on a 454 and used a huge 795cfm Q-jet on my 350 sbc?

    2) What are the differences between oval-port and square-port ones? All I know is that oval-port is more desirable for my Blazer, right?

    3) Can somebody give me a quick tour of all the bbc models available and their differences? (GEN1, GENIV, etc)

    4) I'm currently leaning towards an Edelbrock Performer intake, any other ones you would suggest? I'm going to use my Edelbrock Q-jet on it, and the current manifold is for a 2bbl carb.

    5) My distributor is about 5000miles old. It will fit the bbc, right?

    6) Is there a way of finding out if the engine has been rebuilt? The guy selling it doesn't know anything. He bought the tow truck and swapped a 6.2 Diesel.

    7) Would it be wise to do a re-ring now that I still have another engine in the Blazer? Or should I just go ahead and use it as is and wait until it needs a complete rebuild?

    8) One of the headers has a crack. Is there a special welding procedure to make the weld last longer?

    Sorry for the long post guys, but you know that feeling: getting all excited about something new and can't wait to learn more about it.

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  2. Emmettology 101

    Emmettology 101 3/4 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    All I can say is Sweet deal and the SBC dist will work inthe BBC...

    Mike [​IMG]
    See <font color=green>EMMETT</font color=green> -&gt; <A target="_blank" HREF=http://emmett.coloradok5.com>http://emmett.coloradok5.com</A>

    "He who uses a winch...... Is tired of yankin!"
     
  3. ken

    ken 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    The only 2 barrel manifold ever offered on a BBC was the 1969 396...maybe you got a 396 there??

    ken
     
  4. Blazer79

    Blazer79 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    Oh my God, I hope someone has swapped that intake on a 454. Do you think it is still worth it if it's really a 396?

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  5. POWERMAD

    POWERMAD 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    Hey there
    1. A BBC engine produces alot of torque down low in the power band. That set up is for torque and lowRPMS.
    2. Most likely it has peanut port heads. These are the small oval ports.
    Large oval port heads are what you would want to put on it.
    Square port heads are hi- performance heads. Although I have a set of large ovals with 2.065 intakes and after a little work they do just fine.
    I have a 454 in my 73 C20 and 81 C20 Burb
    4. With out looking at it, I would say that it is a MARK4 Block.
    5. the distributer will fit.
    6. While you have the heads off, look at the top of a piston.
    Most guys will stamp the oversize there. Or mike the bore and check that way.
    7. Now is as good as time as any to go through it and make sure that everthing is good to go.
    8 Buy a new set of headers. Dyno max usualy has them for around $100.
    HP books puts out some realy good info .I have the Big-block Chevy engines and how to hot-rod a BBC.
    Good descriptions on heads and manifols. head poting. ECT ECT.
    Soon the BB will be swaped out of the 73 and into the K5.
    Like you I can't wait to drop it in.
    See ya

    my truck's not dirty, it's earth tone paint
     
  6. Pure Insanity

    Pure Insanity 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    your dist. will work as long as its not a tall deck truck block.i THINK truck is cast into the block under the timing cover.tall decks also require spacers for the intake.while its out id tear it down and look around.gaskets are relatively cheap,it beats droppin it in and finding a problem and have to pull it back out.in a wrecker it prob has oval heads,theyre better for lo end torque.good luck and congrats on the score even if it is a 396.

    PURE INSANITY
    86 blazer silverado 400 horse 350 w/vortec heads 38 x15.5 swampers (40 hawgs next)10 bolts(blah)w/4:88s coming soon,14 bolt.
     
  7. Brians 60s

    Brians 60s 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    easiest way to tell if it is a 54 is to look at the flywheel for a
    welded counter balancer. a 396 won't have one. Also look
    on the harmonic balancer for a weight on the inside of it also
    a 396 will not have one. Nothing wrong with a 396 but for what it costs to build you may be better off with a 400 small
    block. they have lots of balls. If it is a 54 though I would definately keep it.

    "IF YOU'VE NEVER BEEN STUCK.....YOU'VE NEVER BEEN WHEELIN"!!!
     
  8. Blazer79

    Blazer79 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    Thanks for the replies, guys. The engine is about two hours from me, so I will check the flywheel and harm. balancer in a few days. I called the owner today, and he's gonna look up the casting numbers for me. I'm praying that it IS a 454.

    Now a few more questions:

    9) Will this BB engine bolt to my TH350 tranny without modifications?

    10) For those who installed a big block into their Blazers, did you have any clearance problems? What did you do about it?

    Thanks.

    <font color=blue>//////
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  9. bablazer73

    bablazer73 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    the price is right for any bigblock! I had to buy a whole truck to get mine! look for the counter weight on the flexplate/flywheel. and also on the balancer. I have never seen a 2bbl on a 454. some of the 396's from the early years had them on lo-po engines. I would take any bigblock over a small block just for the torque. oval port heads are better for torque, so I would stay with them. performer style intake is an excellent choice. It will be tough to see if it's been rebuit without pulling it apart. If it has been bored, the pistons should be marked. same for bearings. remember that the bigblocks of the mid to late 80's had very low compression. 7.7 to 1!! I am in the process of doing a 454 for my truck. stock bore, dome pistons, oval port heads, roller cam, roller rockers. performer intake. can't wait to get mine goin.

    your right. I don't understand the jeep thing!
     
  10. bablazer73

    bablazer73 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    make sure you get all the brackets and pulleys with it. they can get tough to find. Especially the power steering pump brackets.

    your right. I don't understand the jeep thing!
     
  11. HarryH3

    HarryH3 1 ton status Author

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    Remember that Blazer79 is in Guatemala! The trucks that GM sold in that market could be totally different than the ones they sold for use in the US. Different fuel availability, few (if any) emission controls, etc. Fuel economy could have been more of a concern as well, thus the 2-bbl carb.

    I'm thinking that he can't just stop in at the local high performance shop for engine rebuild stuff either. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
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  12. Blazer79

    Blazer79 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    Harry, finally someones understands me...snif, snif. Thanks for that post [​IMG].

    To tell you the truth, up until mid 80s that was the case. However, after that, there's been a fever of "rolling" cars from the US. That means they go to salvage yards or auctions and buy all the crashed or "lemon" vehicles from the US and drive them, yes DRIVE them all the way to Guatemala. That's about 1500miles from the US border. In very few cases, a big semi tows several small cars, but you're lucky if you find a vehicle that was towed instead of the usual, oil burning tow vehicle. And don't expect the tow vehicles to be tough trucks. Stuff like Mitsubishi Montero, Nissan 1/2 ton Hardbody trucks or even NIssan Sentras are used as tow trucks. A friend of my father bought a Montero that burned more oil than gas. He later found out that it had been the tow truck for another vehicle.

    You're right, I can't just shop at the local high performance shop. You should have seen when I went to the biggest leaf spring factory in the country, and started asking if they could fab me a rear shackle flip, they had no idea. All the mechanics gathered around me to patiently listen when I was explaining what a shackle flip was!! [​IMG]

    You're right about emissions. The first thing a new owner does to his/her new "rolled" vehicle is remove the catalytic converter. There used to be a reason before, we only had leaded fuel, but now there's no excuse since all fuel is unleaded, but they still remove it.

    Now this 454 I'm about to buy (if it's actually a 454) has a sticker in one of the valve covers of an engine shop in Texas. That was the reason for the question about finding out if an engine had been rebuilt. And yes, everyone here is VERY concerned about fuel economy. I'm praying that this shop had swapped the intake by request of the guys that rolled that truck down to Guatemala in order to save some gas along the way.

    Whew! that was a long post. Maybe I was just rambling, but wanted to share a bit about my country with the K5 family.

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  13. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    <A target="_blank" HREF=http://edelbrock.com/automotive/man_bbchev.html>http://edelbrock.com/automotive/man_bbchev.html</A>

    Check this link for Edelbrock BBC intakes. I am installing a Air-Gap intake onto my 454. Congrats on your find! I will be watching this post for BBC install suggestions, as I too am installing a 454 into my Blazer. I bought mine last month without driveline.

    <font color=red> Check out my rig @ </font color=red>
    <A target="_blank" HREF=http://24.10.209.54/bigolk5.htm>http://24.10.209.54/bigolk5.htm</A> [​IMG]
    <font color=red> I Love My Blazer! </font color=red>
     
  14. Blazer79

    Blazer79 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    Back to top.

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  15. bablazer73

    bablazer73 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    I forget where you are!! I guess that makes the find even more special! how hard is it to import stuff there? I have sent stuff to other countries, maybe I can help.

    your right. I don't understand the jeep thing!
     
  16. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    If some things are hard to come by, why not move to the States? Or am I asking the wrong question? Maybe you just have family where you are located and dont want to leave them? Just curious.
     
  17. Brady

    Brady 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    Heres a question on the 454 for you BB boys.I am going through a early 454 and was cleaning the intake and noticed it has Holley and Gm2 printed on it. Is this stock or aftermarket it is cast.Just asking out of curiosity.Thanks Brady

    '73Beautiful Disaster <A target="_blank" HREF=http://beautifuldisaster.coloradok5.com>http://beautifuldisaster.coloradok5.com</A>
     
  18. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    I also just remembered that I have my stock 4BBL BBC intake from my 454. I would part with it for a very low price plus shipping. Please email me for details. See pics @:
    http://24.10.209.54/images/truck/old intake.JPG
    Let me know if you are interested. Email me at ddycus@netwrite.net. Thanks!

    (PS - I would have made it click-able, but it didn't like the space...)

    <font color=red> Check out my rig @ </font color=red>
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  19. Blazer79

    Blazer79 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    bablazer:

    It's really not that hard to import stuff. It's only expensive. I import computer parts for a living. I have to pay about $1.50 per pound, a 10% of declared value for sales tax, and if its a vehicle part, but non-engine related part an additional 10-20% tax. Engine and transmission parts pay only the 10% sales tax.

    Maybe you could help me by finding a shipper that charges less per pound?

    Thanks for your posts. [​IMG]

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  20. Blazer79

    Blazer79 1/2 ton status

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    Re: I\'m the proud owner of a 454!!! Now lots of questions

    Move to the states?![​IMG] It would be nice, but it's too hard. I'm 26 and way too used to my kind of life over here. The first major obstacle would be getting a green card to be able to work over there. (Anyone want to hire a quality programmer? hehe)

    What I really would like to do is plan a 1-2 week vacation to Colorado or another nice place like that and bring some stuff myself. That vacation includes driving my K5 yeah!![​IMG]. But it still gives me the creeps driving through Mexico and being pulled over every 10 miles by the cops because of the weird plates (and cool Blazer, hehe). Don't know if US cops would believe I drove all the way to the US either.

    Thanks for the invitation, though.

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