lq4 with 243 heads?
lq4 with 243 heads? I am sure this has been asked before but this is what I have planned and wanted som input.
Stock Lq4
243 heads
234 236 cam.
This is going in a 93 silverado and i will be running a gmpp intake, aaron's elbow, ebay 92mm tb, 4l80e. I am going this intake route for the looks of it.
Here are some questions...
Will milling the heads be better? How much? I don't mind flycutting as I have done it before. What size head gasket/ or what year model and engine do I order them for?
Any input would be appreciated. Thanks in advance.
Stock Lq4
243 heads
234 236 cam.
This is going in a 93 silverado and i will be running a gmpp intake, aaron's elbow, ebay 92mm tb, 4l80e. I am going this intake route for the looks of it.
Here are some questions...
Will milling the heads be better? How much? I don't mind flycutting as I have done it before. What size head gasket/ or what year model and engine do I order them for?
Any input would be appreciated. Thanks in advance.
I have a similar build going. LQ4 short block with PRC Stage 2.5 LS6 heads, which are the same as 243s. Mine have been milled to 62cc instead of the stock 64cc, and with a stock thickness head gasket is going to be just over 10.5:1 compression. I believe if you use the 243s as-is and use a stock head gasket the compression is right at 10.33:1 (or close). You could mill them down if you wanted to get closer to 11:1 compression, or you could combine some milling with a .041 thickness head gasket to get your comp up...either way, especially if you're willing to flycut.
If you want to go with a stock 6.0L head gasket, you should be able to look it up fairly easily...I think the compressed thickness is .051. I can run out to the garage and look at the set I have waiting to go on if you can't find the part number. I think most people who go with a .041 gasket use cometics...
Hope this helps.
If you want to go with a stock 6.0L head gasket, you should be able to look it up fairly easily...I think the compressed thickness is .051. I can run out to the garage and look at the set I have waiting to go on if you can't find the part number. I think most people who go with a .041 gasket use cometics...
Hope this helps.
Thanks Q, that engine I got from you was awesome. Pulled 425rwhp. After all the other things I did to it I was at 490rwhp. Small things could have gotten me over 500.
