Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

502 GM CRATE

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ducati-cooter, Mar 27, 2002.

  1. ducati-cooter

    ducati-cooter Registered Member

    Joined:
    Jan 24, 2002
    Posts:
    78
    Likes Received:
    0
    Location:
    Madison WI
    HAS ANY ONE EVER PURCHASED A GM PERFORMANCE CRATE 502 FOR THEIR K5. HOW DID YOU LIKE IT, WHICH ONE DID YOU PURCHASE AND WAS IT WORTH THE PRICE.
     
  2. Hossbaby50

    Hossbaby50 3/4 ton status

    Joined:
    Sep 1, 2001
    Posts:
    8,972
    Likes Received:
    0
    Location:
    Peoria, AZ
    I haven't bought one of there 502's, but my dad did buy there "targetmaster" 350. It ran well until a few rings decided that they weren't happy campers. But good thing the GM crates come with a warranty. Now I have there 300HP 350 crate, and it is totally worth it. It runs real good, and has pretty good power. I know a guy that bought the 502HP 502, and put a new set of heads on it, (est. 600HP) in his 72 longbed pickup, and broke the 12 sec quater with it. I do like the GM crate motors. They have a decent price tag, and a warranty. You can't ask for much more.
     
  3. JIM88K5

    JIM88K5 1/2 ton status

    Joined:
    Apr 27, 2001
    Posts:
    1,384
    Likes Received:
    0
    Location:
    Vancouver, Wa
    I've sold a couple of em. One of them went into an 85 3/4 ton camper special. Stock size tire and stock dog dish hubcaps. Can you spell sleeper?
    Jim
     
  4. 6.2Blazer

    6.2Blazer 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    4,675
    Likes Received:
    26
    Location:
    Ohio
    We have a early-90's 1-ton crewcab 2wd truck here at work that got a crate 502 when the truck was brand new (it's used to pull a road surface testing trailer). The 502 version in the truck is what I believe they market as the towing motor and rated at around 350 hp or so?? It has an aftermarket TBI unit with specially programmed ECM and dual exhaust (no cats). The 502 will run circles around the stock 454 that was in it and with the truck empty it will lay some serious rubber down (4.10 posi). I'm not sure how many miles it has, but there are absolutely no leaks and it still runs just like when it was new.
     
  5. bigblue

    bigblue 1/2 ton status

    Joined:
    Dec 6, 2000
    Posts:
    658
    Likes Received:
    0
    Location:
    southern california
    hey jim,

    I am in la mesa..what is your cost for a replacement unit for my 87 350 TBI. Do you have the 270 horspower option? Thanks
     
  6. JIM88K5

    JIM88K5 1/2 ton status

    Joined:
    Apr 27, 2001
    Posts:
    1,384
    Likes Received:
    0
    Location:
    Vancouver, Wa
    Big Blue
    We have the stock replacement 5.7 or we can browse the GM Performance catalog. The best thing to do is get the stock replacement 5.7 . 3 year 50,000 warranty parts & labor. Call me at work in a.m. I'll make you an offer you can't refuse...
    Jim
     
  7. SilverJim

    SilverJim 1/2 ton status

    Joined:
    Sep 23, 2000
    Posts:
    105
    Likes Received:
    0
    Location:
    Evergreen
    I have the 502 HO in my 70 Jimmy...just fired it up this weekend for the first time. It'll be a while before I could give you any info on how it drives. Where else can you get an easy 450 horses?
     
  8. mike reeh

    mike reeh 1/2 ton status

    Joined:
    Jul 23, 2001
    Posts:
    752
    Likes Received:
    0
    Location:
    San Diego, CA
    so we have a gm parts guy here from san diego and nobody told me? whats the drive to bob baker like, from escondido? do you take part lookup requests? /forums/images/icons/smile.gif

    mike
     
  9. JIM88K5

    JIM88K5 1/2 ton status

    Joined:
    Apr 27, 2001
    Posts:
    1,384
    Likes Received:
    0
    Location:
    Vancouver, Wa
    I work saturdays and get mondays off. Give me a ring tuesday or post it here. One way or another I'll get back to you.The drive is worth it if you need a good deal on factory parts. 40 min drive approx.
    Jim
     
  10. roostr3269

    roostr3269 1/2 ton status

    Joined:
    Jul 2, 2001
    Posts:
    305
    Likes Received:
    0
    Location:
    michigan
    I bought the Ram Jet 502 and just finished wiring it a few days ago. I still have about 2 weeks till i will be ready to fire it up. Oh, its goin in a '72 Jimmy.
     
  11. smartpatrol

    smartpatrol Registered Member

    Joined:
    Feb 6, 2002
    Posts:
    86
    Likes Received:
    0
    Location:
    Ault CO
    "I have the 502 HO in my 70 Jimmy...just fired it up this weekend for the first time. It'll be a while before I could give you any info on how it drives. Where else can you get an easy 450 horses?"

    Thats an easy question out of any 68-76 cadlillac with the 500 c.i. engine. why spend 15K when you can get the same of better for about 3k. :P
     
  12. k30gambi

    k30gambi 1/2 ton status

    Joined:
    Dec 24, 2001
    Posts:
    108
    Likes Received:
    0
    Location:
    illinois
    I was looking at GM's 502 motors, I think the 450hp 502 costs around 5000 bones? Then I was looking at my summit catalog and they have their hardcore stroker setups that give you 496, 509 and 540 cubes, all coming with 4.25 stroke
    (stock 4.00) forged cranks and Manley con rods and whatever pistons you want. Anyway that bottom end costs 2000. I think if you combine that kit witha 4-bolt seasoned block bored .030 you could hang together at 5500 maybe a tad higher (yikes!). And i've got the old 049 casting heads with 2.19, 1.88 valves 400 bucks. I think this combo could make more than 450 horses for less of a price than the
    GM 502. I was thinking of doing this, you guys think it would be worth it???
     
  13. Nitrodrip350

    Nitrodrip350 1/2 ton status

    Joined:
    Jul 22, 2001
    Posts:
    358
    Likes Received:
    0
    Location:
    Centennial, CO
    Check This !!

    1971 ELDORADO: V-8 ENGINE: Eight-cylinder, 90 degrees V-type. Gross HP 365 @ 4400 RPM. Bore 4.30, stroke 4.304, displacement 8.2 litres. Gross torque 535 ft.-lbs. @ 2800 RPM. Compression ratio 8.5 to 1. (SAE net HP 235 @ 3800 RPM. SAE net torque 410 @ 2400 RPM.)

    I think they got better too! 8.5 to 1 CR!! I was looking at this but ran accross a ZZ block that was pretty cheap and I'm just too damn lazy to do the conversion

    You can see more at :
    http://www.cad500parts.com/
     

Share This Page