Noob Q: Is there a way to tell the year of an engine via Block Casting?
#1
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Noob Q: Is there a way to tell the year of an engine via Block Casting?
sorry for the newbie question. I should know this by now.
But i was wondering if I could tell the year of an engine via any of the castings on the block.
Im picking up a used shortblock and was wondering about the year.
Thanks!!
If there is a link, please direct me.
But i was wondering if I could tell the year of an engine via any of the castings on the block.
Im picking up a used shortblock and was wondering about the year.
Thanks!!
If there is a link, please direct me.
#2
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Just the holes:
http://image.gmhightechperformance.c..._ls1_block.jpg
Window:
http://www.tpis.com/catalogimages/Short_Block.jpg
Also the LS6 block will have an extra main window for better oil windage.
http://www.pirate4x4.com/tech/billav...y-to-bay-1.jpg
#6
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LQ4's have dished pistons (~9.4:1 CR) and LQ9's have flat top pistons (~10:1 CR). I believe the something like the '01 or '02 and later LQx blocks is when a single crank was cast and a spacer was used for an auto trans and no spacer for a T56. Allowing the T56 to bolt right up.
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Sanchez, awesome blossom! Thanks for the great info.
Also, yes i just found out that the 99-00 LQ4 Cranks wont adapt to the T56 (they are too thick) I called the guy and he assured me That the LQ4 im buying has the smaller Crank. yay.
One lassssssst question. Im going to be using my 853 heads(non LS6, camero style). Will i need to mill the heads down? or will this depend upon my head gasket thickness? What Compression ratio should I be shooting for? Im doing just a NA shortblock swap for now. No FI is planned for the future.
Im off to search the Ls1tech archives now...
Also, yes i just found out that the 99-00 LQ4 Cranks wont adapt to the T56 (they are too thick) I called the guy and he assured me That the LQ4 im buying has the smaller Crank. yay.
One lassssssst question. Im going to be using my 853 heads(non LS6, camero style). Will i need to mill the heads down? or will this depend upon my head gasket thickness? What Compression ratio should I be shooting for? Im doing just a NA shortblock swap for now. No FI is planned for the future.
Im off to search the Ls1tech archives now...
#10
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Sanchez, awesome blossom! Thanks for the great info.
Also, yes i just found out that the 99-00 LQ4 Cranks wont adapt to the T56 (they are too thick) I called the guy and he assured me That the LQ4 im buying has the smaller Crank. yay.
One lassssssst question. Im going to be using my 853 heads(non LS6, camero style). Will i need to mill the heads down? or will this depend upon my head gasket thickness? What Compression ratio should I be shooting for? Im doing just a NA shortblock swap for now. No FI is planned for the future.
Im off to search the Ls1tech archives now...
Also, yes i just found out that the 99-00 LQ4 Cranks wont adapt to the T56 (they are too thick) I called the guy and he assured me That the LQ4 im buying has the smaller Crank. yay.
One lassssssst question. Im going to be using my 853 heads(non LS6, camero style). Will i need to mill the heads down? or will this depend upon my head gasket thickness? What Compression ratio should I be shooting for? Im doing just a NA shortblock swap for now. No FI is planned for the future.
Im off to search the Ls1tech archives now...
No you don't need to mill the heads. The LQ4 has the lower compression dished pistons but have 72cc heads. Just bolting on a pair of stock chambered LS1 heads will raise the compression ratio back up to ~10:1 which will be close to stock LS1 compression. If you are using a LQ9 block with flat top pistons, the compression ratio will be ~11:1. Which is better for a NA build. (Approximately 1 point in CR increase = 3% overall power gain) Either way it will be fine for a NA build. You can choose your head gasket thickness to squeeze more compression out of it.
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Staging Lane
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lmao. Sorry. When ever i read CamAro, all i see is Mullet Mullet Mullet. LMAO. Totally Joking!!
Thank you for the straight up answers!!! I really appreciate all the help guys. West section FTW!
Thank you for the straight up answers!!! I really appreciate all the help guys. West section FTW!
#12
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A cool website with a compression Calculator:
http://www.dmperf.com/compression.htm
Lots of stock Specs!
http://www.smokemup.com/tech/ls1.php
http://www.dmperf.com/compression.htm
Lots of stock Specs!
http://www.smokemup.com/tech/ls1.php
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I'm using 5.3 heads (cut for the larger LS1 intake valves/midly ported & shaved to 59cc) to bring my compression ratio up to 10.9:1 with the stock MLS gaskets. They compress to .051 fyi, if you wanna run it through a calculator in the future.
Oh and the deck clearance is -.008 and the dish in the LQ4 pistons is -4cc
I use this calculator it takes a couple more variables into account.
http://www.csgnetwork.com/compcalc.html
Oh and the deck clearance is -.008 and the dish in the LQ4 pistons is -4cc
I use this calculator it takes a couple more variables into account.
http://www.csgnetwork.com/compcalc.html
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This is great info fellas.
Im really excited to have 6 liters and a 4inch bore at my disposale. The future looks bright
So I shouldnt really see a difference in power with my new CR to be at Roughly 9.93 vs the stock 10.1 (http://www.smokemup.com/tech/ls1.php)
Does anyone have any advice with the upgrade? Is there any thing that is super hot right now. I remember back a few months ago the thing was L76/L92.
Im really excited to have 6 liters and a 4inch bore at my disposale. The future looks bright
So I shouldnt really see a difference in power with my new CR to be at Roughly 9.93 vs the stock 10.1 (http://www.smokemup.com/tech/ls1.php)
Does anyone have any advice with the upgrade? Is there any thing that is super hot right now. I remember back a few months ago the thing was L76/L92.
#17
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This is great info fellas.
Im really excited to have 6 liters and a 4inch bore at my disposale. The future looks bright
So I shouldnt really see a difference in power with my new CR to be at Roughly 9.93 vs the stock 10.1 (http://www.smokemup.com/tech/ls1.php)
Does anyone have any advice with the upgrade? Is there any thing that is super hot right now. I remember back a few months ago the thing was L76/L92.
Im really excited to have 6 liters and a 4inch bore at my disposale. The future looks bright
So I shouldnt really see a difference in power with my new CR to be at Roughly 9.93 vs the stock 10.1 (http://www.smokemup.com/tech/ls1.php)
Does anyone have any advice with the upgrade? Is there any thing that is super hot right now. I remember back a few months ago the thing was L76/L92.
#18
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check out this l92 combo that makes great power with a smallish cam.
https://ls1tech.com/forums/dynamomet...p-446rwtq.html
I say go for it you know you are going to wish you had more power after a few months.
https://ls1tech.com/forums/dynamomet...p-446rwtq.html
I say go for it you know you are going to wish you had more power after a few months.
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Yeah the L92 heads are what i have planned for a future upgrade when i haver the $$ for a forged bottom end.
L92 heads, Vic Jr. intake, 850 Holley, and a HEALTHY cam set-up for a good 200hp shot.
L92 heads, Vic Jr. intake, 850 Holley, and a HEALTHY cam set-up for a good 200hp shot.