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Thread: Upgrading H/C at high mileage?
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10-13-2006, 03:26 PM #1
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 04:28 PM.
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10-13-2006, 04:38 PM #2
If the car has been taken car of, i.e. regular maintenance, you should be fine.
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10-14-2006, 04:58 AM #3
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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.
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10-14-2006, 01:39 PM #4
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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.
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10-14-2006, 07:07 PM #5
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
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10-14-2006, 08:23 PM #6
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.lolLast edited by DriveV8Faster; 10-15-2006 at 06:39 AM.
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10-15-2006, 07:52 AM #7
- Join Date
- Oct 2005
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- RI
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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.
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10-15-2006, 06:08 PM #8
- Join Date
- Jul 2006
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White- 1998 Camaro
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11-04-2006, 04:26 PM #9
Anyone else care to comment on my original question?
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11-05-2006, 10:44 AM #10
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11-05-2006, 08:16 PM #11
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
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