Results 1 to 9 of 9

Thread: motor

  1. #1
    Senior Member blazer_1994's Avatar
    Join Date
    Mar 2004
    Location
    Kentucky
    Posts
    354

    motor

    Ok Ive been searching for a sbc to put in my blazer, was looking to just build it myself, but ive came across a good offer i think any way. He told me what it was i cant remember seems like he said a 375 or 377? but anyway wants around 800 for the motor, my question is Ive got a th350 tranny, what all will i need to do to it so it can withstand the HP of the motor if i get it. He said he wasnt for sure on the HP but it is one stout motor. Im figurin a bigger stall and a shift kit. Anybody can help me out with some parts numbers or suggestion would be appreciated.
    2006 GMC Canyon 2.8 Daily Driver
    1985 s10 blazer project, shaved stuff and 350 combo, eagle alloys 77 series 17's, 8.8 ford rearend

  2. #2
    underachiever i hate imports's Avatar
    Join Date
    Jul 2002
    Location
    Pa
    Posts
    748
    th350 should live no prob, they get put behind bbcs sometimes, shift kit might as well for them nice hard shifts, 1800-2000 stall converter to be able to get them tires rollin without loosing ur street drivability
    Originally posted by Slamd_sdime
    um i cant post any threads i dont know what to do.
    92 Lumina Z34 16.25 @ 84.33 mph 15.70 without overdrive
    69 Chevelle 14.97 @ 90.78 mph
    94 Probe 18.27 @ 74 mph
    88 Suburban 18.35 @ 72.07 mph (sure, why not?)
    90 Taurus sw 16.439 @ 82.78 mph on the brakes (just keeps wanting to go faster)
    1988 Acura Integra 1.6L 17.936 @ 75.27mph (217,000 and runnin strong!)

  3. #3
    Banned
    Join Date
    Nov 2002
    Location
    Lyndon, Kansas
    Posts
    7,511
    You can get better frictions and steels. Upgrade servos. Valve body modifications, update any weak spots, ive never messed with a 350, im sure theres some common problems with them..


    89' S10 blazer 4wd: 355, 650 dp, rpm intake, comp 282 roller cam, modified vortecs, T56 Six speed, 8.8 ls rear, headers, x-pipe, spintech pro street mufflers, and......AC

    Blazer burnout video - http://www.youtube.com/watch?v=sP7iLypoDI4

  4. #4
    ghetto star Tukin15sLike20s's Avatar
    Join Date
    Apr 2003
    Location
    St. Louis
    Posts
    3,600
    Well if the motor is fairly stock then a stock TH350 will be plenty fine. I would spend the few dollars and buy a shift kit for it though.
    1990 S10 - Bagged - Shaved - SFBD'd

  5. #5
    It's all about to change winditup57's Avatar
    Join Date
    Oct 2005
    Location
    Davenport, IA
    Posts
    2,064
    Get yourself a Transco shift kit and a new torque converter and let 'er buck. Find out from the dude what cam is in it so you know how much stall you actually need.

    TH350's are fairly strong.
    ______________________________
    You dont grow out of stupid...you have it for life.
    Build 'em light and wind 'em tight!!
    1980 Malibu Classic 2 DR

  6. #6
    Senior Member bigjsp's Avatar
    Join Date
    Nov 2002
    Location
    Columbus, OH
    Posts
    12,665
    377 is normally a 400 block with a 350 crank.

    I had one and used to twist the hell out of it.

  7. #7
    Senior Member blazer_1994's Avatar
    Join Date
    Mar 2004
    Location
    Kentucky
    Posts
    354
    the guy that has the motor said its currently in an s10, not for sure if its a 2wd or 4wd gonna find more out this weekend, he didnt giv emany details but he said its a beefy motor and has plenty of power. Im gonna try and see if he'll sell me the tranny thats with it at the moment hopefully he will. U said the 377 is a 400 block?
    How hard are they to put into the s10, much difference in the 350 block? What about engine mounts are they hard to mod up or do they sell a pre fab set somewhere. But if its gonna be alot of trouble im just gonna get a 350 and build it to a 355. Thanks for the help guys.
    2006 GMC Canyon 2.8 Daily Driver
    1985 s10 blazer project, shaved stuff and 350 combo, eagle alloys 77 series 17's, 8.8 ford rearend

  8. #8
    Senior Member bigjsp's Avatar
    Join Date
    Nov 2002
    Location
    Columbus, OH
    Posts
    12,665
    one quick check is that MOST (but not ALL, it is GM, LOL) andways most 400 blocks have 3 freeze plugs per side.

    you have to be aware of steam holes / head gaskets to are slightly different for a 400 block. The block has siamesed bores and the area between the cylinders is where the issues used to be.

    They run bearing spacers to make up the difference in the crank joural diameters, although nowadays I believe you can order the crank specific to your combo.

    Run 350 (neutral) balacer and flywheel / flexplate.

  9. #9
    It's all about to change winditup57's Avatar
    Join Date
    Oct 2005
    Location
    Davenport, IA
    Posts
    2,064
    Dimensionally, on the outside, they are the same motor and will require the same amount of work/bolt ons as a 350 to install it into the S10.
    ______________________________
    You dont grow out of stupid...you have it for life.
    Build 'em light and wind 'em tight!!
    1980 Malibu Classic 2 DR

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •