Results 1 to 11 of 11

Upgrading H/C at high mileage?

This is a discussion on Upgrading H/C at high mileage? within the Internal Engine forums, part of the LSx Technical Help Section category; I'm gonna be buying an LS1 f-body in the next few months but my budget might only allow me to ...

  1. #1
    Member DriveV8Faster's Avatar
    Join Date
    Apr 2006
    Location
    Long Island, NY
    Age
    31
    Posts
    356

    Upgrading H/C at high mileage?

    I'm gonna be buying an LS1 f-body in the next few months but my budget might only allow me to get something around $7,000-$8,000. This obviously means atleast 70k but probably even more. I don't want a stock car. I've already had a 94 Formula which I loved, but I want something with a hell of a lot more power. Basically what I want to know it what you guys think of doing aftermarket heads and cam(mid-range, not too big or too small) at 100k and up. Is it safe? Or will I just blow the engine?
    Last edited by DriveV8Faster; 11-04-2006 at 05:28 PM.

  2. #2
    Member SR71's Avatar
    Join Date
    Nov 2005
    Location
    Irving, TX
    Age
    38
    Posts
    105

    Black
    1998 Trans Am, 2007 TB SS

    If the car has been taken car of, i.e. regular maintenance, you should be fine.

  3. #3
    Member
    Join Date
    Oct 2005
    Location
    RI
    Posts
    165

    Mag Red
    2002 Vette

    You may just want to replace things like lifters when you do the heads, new harmonic balancer when you do the cam, things like that. These are the items that tend to suffer more with mileage so replace them while its apart and you should be OK. When you look at the car, check for oil change frequency and you may even want to have someone do a leakdown/compression test to check on the rings, etc.

  4. #4
    Junior Member
    Join Date
    Feb 2006
    Location
    North Carolina
    Posts
    47

    black
    2000 WS 6

    My car has 99,xxx miles on it and I just now bought a H/C package I am the original owner.

  5. #5
    Rollo Tomassee AKIRA's Avatar
    Join Date
    Aug 2005
    Location
    Outside the box
    Age
    37
    Posts
    2,887
    This is a good topic.

    How much is it to get someone to do a compression test? I dont have a clue how to do it and wont chance fucking it up.
    99 T/A M6
    LS6 intake, Hooker Coated Long Tubes, Y-pipe w/1 carsound cat, Hooker Catback, MTi Clear Lid, FRA w/ Holley Power Shot, ASP crank pulley, 1.8 RRs, 3.73s w/TA girdle & Eaton Differential, Granatelli SFCs, Pro 5.0 Shifter, LS6 Clutch, Diablo, TByrnes Maf Ends (in winter), All the Free Mods

  6. #6
    Member DriveV8Faster's Avatar
    Join Date
    Apr 2006
    Location
    Long Island, NY
    Age
    31
    Posts
    356
    Quote Originally Posted by AKIRA View Post
    This is a good topic.

    How much is it to get someone to do a compression test? I dont have a clue how to do it and wont chance fucking it up.

    I don't know the price but I believe that the way to do it is to get each piston at BDC(bottom dead center) and then crank it over manually to TDC(top dead center) with a compression gauge in the spark plug hole for each cylinder. Also, it has to be on the compression stroke. Hell, I wouldn't attempt it myself, probably screw up.lol
    Last edited by DriveV8Faster; 10-15-2006 at 07:39 AM.

  7. #7
    Member
    Join Date
    Oct 2005
    Location
    RI
    Posts
    165

    Mag Red
    2002 Vette

    Actually, you remove the plugs then put the gauge into the first spark plug hole. With the coils and fuel pump shot off, crank the motor and get a compression reading. Move to next cylinder.

  8. #8
    WTF?! BAIL!
    Join Date
    Jul 2006
    Location
    UCLA
    Age
    29
    Posts
    70

    White
    1998 Camaro

    Quote Originally Posted by vettenuts View Post
    Actually, you remove the plugs then put the gauge into the first spark plug hole. With the coils and fuel pump shot off, crank the motor and get a compression reading. Move to next cylinder.




    It was one of the first things my dad taught me how to do when I had my old 4 cylinder.

    Really not a big deal, I don't see what everyone is scared of.

  9. #9
    Member DriveV8Faster's Avatar
    Join Date
    Apr 2006
    Location
    Long Island, NY
    Age
    31
    Posts
    356
    Anyone else care to comment on my original question?

  10. #10
    Never Drink and Derive Tonik's Avatar
    Join Date
    Jan 2006
    Location
    Texas
    Age
    30
    Posts
    1,019

    Black
    '99 SS

    Quote Originally Posted by fbodylover4ever View Post
    Anyone else care to comment on my original question?

    Wouldn't mind knowing myself.... im about to hit 160k. Maybe I should just get me one of them 408 iron blocks with all forged internals. Maybe.

  11. #11
    Member wesTXwitesnake05's Avatar
    Join Date
    Feb 2006
    Location
    Midland TX
    Posts
    249

    White with silver stripes
    2000 Trans Am WS6

    This is a very good topic. I was thinking about a h/c swap also. So far i have about 56k on the motor. I've put 22k extremely well maintained miles on it, but i dont know how well it was maintained/driven before me so i was worried about the condition of the bottom end. I've been researching and gathering parts for awhile, i have just about everything to make the top end of the motor and valvetrain brand new except a cam... stg 2 heads, ported ls6 intake, t/b, oil pump,lifters,ect ect. But now that ive been fatally bitten by the performance bug i decided to save all the good stuff and wait for a new 383 short block. i am puttin a cam in to hold me over tho

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. High mileage help
    By huitt06 in forum Camaro / SS
    Replies: 6
    Last Post: 09-12-2014, 11:44 AM
  2. Question: High mileage WS-6?
    By aaron_douglas in forum Firebird / WS6
    Replies: 10
    Last Post: 08-11-2011, 12:05 AM
  3. How many here have bought a high mileage LS1?
    By importssuck in forum Camaro / SS
    Replies: 103
    Last Post: 04-08-2011, 12:33 PM
  4. High mileage?
    By seechadfall in forum Drivetrain
    Replies: 5
    Last Post: 08-22-2010, 06:33 PM
  5. High/Low Mileage club
    By JoshieDoom in forum Firebird / WS6
    Replies: 37
    Last Post: 07-15-2008, 02:26 AM

Bookmarks

Posting Permissions

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