Time to change the engine
my setup is somewhat similar to yours. Stock LS1 short block. 243 heads (not ported), Halltech air bridge, FAST 102 intake, Nick Williams 102 throttle body, TexasSpeed MS3 cam, LG 1 3/4 long tubes with high flow cats. 99 C5 A4
Produced 391 WHP, 417 Ft-Ibs on Mustang Dyno
There was a 04 Z06 in shop at same time. He basically had a similar type setup, with the addition of trick flow heads and more modern Brian Tooley cam. He made ~430 WHP.
Last edited by wf847834; Sep 1, 2020 at 10:13 PM.
my setup is somewhat similar to yours. Stock LS1 short block. 243 heads (not ported), Halltech air bridge, FAST 102 intake, Nick Williams 102 throttle body, TexasSpeed MS3 cam, LG 1 3/4 long tubes with high flow cats. 99 C5 A4
Produced 391 WHP, 417 Ft-Ibs on Mustang Dyno
There was a 04 Z06 in shop at same time. He basically had a similar type setup, with the addition of trick flow heads and more modern Brian Tooley cam. He made ~430 WHP.
Monday I will pull the torque tube and get the old engine out. Then the fun part begins. Figure I will just post progress to this thread.
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I have also just started the same process but unsure if i should take out engine from above or lift the body(i have a lift)from the cradle , what is your plan ?
I have also just started the same process but unsure if i should take out engine from above or lift the body(i have a lift)from the cradle , what is your plan ?
I have to say, I am really having a great time doing this and taking my time. Not in a rush. I have the ST to daily drive until I’m done. And all the advice is wanted and appreciated. Learning as I go. I’ve always been fair with a wrench, but this corvette is a little bit of a different beast. Again, thanks for all the help and advice.




I have read lots of threads here where people discuss pulling the torque tube and rear bits without a lift. I currently have the car up on RV jack stands rated at 12 tons each. I have it about 2 feet in the air. I found that to be plenty of room for working under the car as well as plenty of clearance to roll it all out the back once I had it detached and dropped. I used 4X4 blocks and a jack under the rear subframe. Another jack and block under the front of the torque tube, a third jack and block under the oil pan to keep it from tipping back to far and damaging the dash. Once I got everything separated I replaced the jack under the oil pan with a jack stand with a hockey puck. That must really be a big deal as there are stickers all over the torque tube as well as notes in the shop manual warning against tipping too far and the damage it will cause.
I am reasonably close to being able to hoist the engine out the top. I am trying to do it without cracking into the AC system as right now it is ICE cold. I got the nut off and the bolt completely lose on the top of the compressor, and got both the bottom bolts out so the compressor would separate if the frame was not in the way of those 2 top bolts. My current plan is to drop the entire front Kmember about 3 inches to give me enough clearance to take that front bolt all the way out and pull the compressor off the long bolt behind it to separate it from the block and tie it out of the way as much as possible. I will let you all know later if I have success with that. Any of you that have done this before, I would love any advice you have to give me here.
Because of the issue with the crank case pressurizing and pushing oil out the rear main seal, there is a lot and I mean a LOT of oil under the car that I need to clean up. You will see in the pics that the transmission is covered in it. Same with a lot of the exhaust and floor boards etc.. I will spend some time just cleaning stuff up once I get the engine all the way out. I am hoping to replace a lot of the exhaust. I would love to do headers and Xpipe if I am in a position to do so. If not, at the very least I will give the outside a good cleaning. I really hate the idea of putting the stock exhaust manifolds back on. They are so heavy.... Just feel clunky and out of place. Headers etc... are the biggest expense that I really had just not planned for, but I think I will get measurably better results with the cam and heads if I figure out a way to do headers at the same time. They are just SO expensive....
As far as cleaning the oil off the bottom of the car, I am hoping for suggestions on detergents that will not harm wiring or the floor board materials etc. On the big stuff that I can separate, like the control arms etc I will probably pressure wash once I get the old bushings and ball joints out, and then maybe some light polishing. I found a board member selling front and rear springs from a Z06 as well as the Z06 sway bar that I may pick up to replace mine with. I can’t imagine that being covered with oil for over a year did my existing springs any favors.
So below, see images from todays progress. As always, I would love any suggestions or insight anyone has to offer. Thank you for all the help and encouragement so far. I really think this will be worth it in the end and even more importantly I am having a blast doing this with my children. Part of the reason this car means what it does to me is that it was the last car my father and I worked on together. This week was the 3rd anniversary of his passing and I like passing down some of his knowledge and passion for fixing things on to his grandchildren.













