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I need final suggestions on 489 stroker parts. Shawn??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Zepplin, Feb 21, 2001.

  1. Zepplin

    Zepplin 1/2 ton status

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    I talked to Speed-O-Motive yesterday about getting a stroker crank (4.250") and some rods. The have an Eagle 4340 4.250" crank for $660. Jegs lists the exact crank for $800. Any past experiences with Eagle cranks or suggestions?

    They also said I would have to do some cam cutting on a stock rod which they also sell for $200 with ARP bolts after machining. Does cam cutting mean that the rods have to be machined for clearance?

    Finally, any pros or cons for H-beam or I-beam rods? Different strengths? I could also buy new Eagle rods 6.385" from Jegs for $560. In Jegs they say: "ARP 7/16" 8740 cap screw bolts with a stroke design for monster cam clearances." So I assume these rods do not need any machining done to them using a stroker crank?

    Shawn,
    BTW; How much did your Triton rods cost?

    I am getting ready to order these parts but would like any suggestions to best suit my engine.

    Thank you!

    74 Blazer
    Kashmir
    Zepplin
     
  2. Shawn

    Shawn 1/2 ton status Premium Member Author

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    Ok, PME Racing has a special deal going on now-

    4130 Forged Stroker Crank
    4340 Forged I-beam rods w- 7/16 ARP cap screws, 6.385 long
    KB Pistons (any size)
    $945

    You can probably get the crank and rods separate if you want. I paid $400 for my crank and $255 on the rods.

    Joe of PME says the crank above is a Triton crank but claims that they make the one for Eagle too.

    Those rods are good up to 700hp so I wouldn't spend the extra on H-beam unless you're planning on a supercharger or a Fogger system.

    The stock size of rods will need to be clearanced more. The longer Tritons rods like above will not. With his crank, rods and pistons, I didn't have to clearance a thing but according to Joe, some blocks need it, some don't. With those rods, it's only at the bottom where the oil pan mounts.

    I just tried his web site but they're currently having problems with their ISP. Call 1-800-583-8789 and ask for Joe.

    Here's the info I got when I bought the crank:
    Triton Engineering's "SUPER-COMP"; Big Block Chev Stroker Cranks are made of 4130 Chrome-Moly Forged Steel that has been Magna-fluxed, Shot Peened and Multi-Stage Induction Hardened - The Rod and Main Journals are Index Ground and Chamfered with a .125 radius - Cross Drilled Mains - Main Journals are 2.7497(Std) Rod Journals are 2.200(Std) - Stroke is 4.250 - ( ONLY 1 AVAILABLE at This PRICE ) - Cubic Inches are Std=482, .030=489, ..060=496, .100=505 - Recommend for 6.385 Rods or Longer (Available Separately Starting at $255 set) -Shipping is $40 in the the Lower 48 States (73-lb) - (We also have Pistons, Rods and Most Other Parts to Complete your Engine) - ( SHIPPED IN A 350# CUSHIONED BOX ) - (Parts Distributorships Available) - (344821) - Retail is $699.00

    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     
  3. Shawn

    Shawn 1/2 ton status Premium Member Author

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    Oh yeah, the KB pistons are part # KB 284 which can be seen here:

    http://www.off-road.com/chevy
     
  4. Zepplin

    Zepplin 1/2 ton status

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    I was just looking at those pistions yesterday! Those are the ones I will get but, there is a good chance I can get them free through work. I will have to get a hold of PME today and talk to Joe. That sounds like a good deal for the set though. So far the cheapest crank and rod set I found was for $1,200.

    Another question. What is the difference between a 4340 and a 4130 crank? Different forging methods?

    I plan on getting either some alum. Edelbrock heads or maybe some cast iron Merlin heads. A friend at work say Merlin's flow real well and they cost half as much as the Edelbrock heads. You have the rect.port heads from Edelbrock right?



    74 Blazer
    Kashmir
    Zepplin
     
  5. Shawn

    Shawn 1/2 ton status Premium Member Author

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    Definitly give Joe a call and tell him I sent you.

    I'm not sure of the difference between 4130 and 4340 but I'm sure Joe or someone here would know.

    Merlin heads are cool but I really like alum. Merlins have a bigger CC size, I think 120cc. so they may not work. New Merlins were around $1000 with valves and springs. I got Edelbrocks RPM heads for $1400 from carparts.com using a 15 percent off coupon. Normally $1600. Remember, alum, dissipates heat better so you can usually run more compression without detonation with alum. I have to admit, those Edelbrocks are NICE! The way the ports are done and the valve guides, these things will flow! I didn't get the rect. heads, I got the ovals (actually rect-oval). Then I ported the intake to match the rect-oval design. For low RPM torque, you want the oval ports. Retangle ports aren't good for power until 4k. GM's new oval alum heads are the same exact thing and Edelbrock admitted making them for GM. Be sure to use the GM ZZ502 intake gaskets since they have the rect-oval design.

    Here she is going in:
    [​IMG]
    This is the part where you pray the hoist won't fail!!! [​IMG]

    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     
  6. Shawn

    Shawn 1/2 ton status Premium Member Author

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    Here's a close up of one of the intake ports on the Edelbrock heads. Notice how smooth the walls are and the smaller valve stem with the tapered valve guide.

    [​IMG]

    My 049 GM heads didn't look anything like that.

    I'm not sure how the Merlins look but probably like the above picture. If it wasn't for the CC size of the Merlins, I would of got them to save some cash. But after installing the Edelbrock's I'm glad I got them. I was able to shed some weight off the engine too.



    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     
  7. Zepplin

    Zepplin 1/2 ton status

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    Yeah, per Jegs you can also get bigger valves in Merlin head. But, your right about the heat and the detonation problem that could arise with the Merlins. Plus there is a big difference in weight.

    Thanks alot for all the info. It sure helps, when I go ahead and spend a couple thousand dollars (so far); I know that everything will work together properly. You've been a tremendous help.

    Let me know how the fuel injection works out for ya. I hopefully won't be too far behind you with the 'engine hanging from the hoist' senairo!

    74 Blazer
    Kashmir
    Zepplin
     
  8. Zepplin

    Zepplin 1/2 ton status

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    Looks as smooth as a baby's @ss. I going for the Edelbrocks! Did you have to put those ghetto tires on the front so you could get the Blazer in the door?

    74 Blazer
    Kashmir
    Zepplin
     
  9. Shawn

    Shawn 1/2 ton status Premium Member Author

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    I had to put those pizza cutters (ghetto tires) on just so the hoist could lift the engine out! My garage door has plenty of room at the top. What really sucked is the front bumper sticked out too far so I couldn't bolt the tranny up untill I took the winch off and removed the bumper. [​IMG] Funny, I didn't have that problem when I took the motor out... I think that lift plate that mounts where the carb is had something to do with it.

    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     
  10. CaptCrunch

    CaptCrunch 1/2 ton status

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    I'm not sure of exactly what kinda application you have going but here are some other names for you... I ran Cola cranks back when I was hardcore racing and later switched to Crower.... for afforability and quality check out scat cranks and rods. My buddy is running his 496 stroker w/ these and he sends a full and complete 84 buick electra station wagon on street tires down the quarter in about 11.7. I also ran the eagle H-beam rods in my 355 sm block. Never had any problems and were more then strong enough under 8,000 rpm. BTW.... 4340 is what some call aircraft quality... It is about the strongest you can get, but they weigh a little more then the 4130. The merlins flow excellent... I'd also look into Brodix... Just a few more ideas for ya. Sounds like it'll be awsome.

    1987 Chevy K5 Blazer- 350 TBI
     
  11. CaptCrunch

    CaptCrunch 1/2 ton status

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    Almost looks like the bumper ends are curling up and the truck is smiling knowing that big block is going in Shawn. Looks like it's gonna be one happy Blazer. Have you fired it up yet?

    1987 Chevy K5 Blazer- 350 TBI
     
  12. Shawn

    Shawn 1/2 ton status Premium Member Author

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    That Blazer better be smiling! [​IMG]

    Haven't started it up yet. Holley is sending out their new Commander computer setup and larger injectors to me. One of these days... she will start!

    Sometimes, we are slaves to our possessions.

    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     
  13. CaptCrunch

    CaptCrunch 1/2 ton status

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    Sounds like one bad mutha sucka! I'm thinking mid-summer would be a good time to pop in a 377 or 383 w/ some Vortechs for me.

    Sometimes we are.. ROTFLMAO... I think I always am... probably always will be too

    1987 Chevy K5 Blazer- 350 TBI
     
  14. Zepplin

    Zepplin 1/2 ton status

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    Shawn,

    I called PME racing today and talked to Joe's daughter. He was out of the office for a while. She gave me the list prices Triton Crank $483, Triton rods $246-$286; depends if you get pressed or bronze pins. I mentioned your first name only and she new your last name right away. These are the best prices I have seen after looking at 4 or 5 other racing sites though. Do you know what the differences between pressed and bronze pins are? Its only a $40 dollar difference between the two so that's not bad at all.

    Make sure you drop me an e-mail when you get it running.

    74 Blazer
    Kashmir
    Zepplin
     
  15. Josh

    Josh Registered Member

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    The numbers 4340, 4130 all have to do with the alloying metals involved. Each number represents a different component. I don't have the referneces here in front of me so I can't say what those are exactly.

    Josh
     
  16. Shawn

    Shawn 1/2 ton status Premium Member Author

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    If you can't get a good deal on pistons with your company, you might want to get them through PME. I think he might take more off if you order all 3. My crank may have been a special deal at the time. Still, $483 for a forged stroker crank isn't bad. I didn't get the bronze bushings in the rods but it wouldn't be a bad idea. I think this allows you to rebuild the rods if you ever need to again but I'm not too sure.

    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     
  17. Zepplin

    Zepplin 1/2 ton status

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    No, you can't beat that price for a stroker crank. So far they are the cheapest place I've found. Thanks so much for referring them to me. I am 99.9% sure that I can get the KB pistions for free. We carry their line of pistons here at work. This weekend I am going to tear into my 454 and get it ready for the machine shop. Only a month away before we start punching it out!

    Thanks so so much!!!!

    74 Blazer
    Kashmir
    Zepplin
     
  18. Shawn

    Shawn 1/2 ton status Premium Member Author

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    A bronze wrist pin bushings are made to withstand higher impact force. A third hole drilled at end of the bushings releases any air pocket.


    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     

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