8 sec. LS turbo engine buildup
12-17-2008, 02:58 PM
#21
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they have it at speed inc
http://www.speedinc.com/enginepackages.cfm
i think they are a sponsor, if not i apologize for posting links
http://www.speedinc.com/enginepackages.cfm
i think they are a sponsor, if not i apologize for posting links
Very true. we have had our shop car in the 8's with an iron 370 motor and a single turbo. consistent 8.6x's and 8.7x's with the twins with a new motor, but still a 6.0l iron block.
TT69camaro - if you would like to talk shop, you can e-mail or give us a call here.
847-891-0767
12-17-2008, 08:04 PM
#22
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I'm looking for high 8's with a 3800 lb car. Hopefully I can get the weight down more than that. I'm targeting 1000rwhp on 93 octane. I've done it before on my 1st gen SBC 374ci with 23deg heads. I'm thinking it should be even easier with a LS motor. The 6.2L specs (i.e. piston/rod ratio, comp. height, etc) work well for me. I just need to figure out if the factory stuff is strong enough or should I lean towards aftermarket. Specifically the 4340 crank and rods!
12-17-2008, 08:24 PM
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The car is so heavy saving the weight would be nice. I'm running 9.0's with a 404ls2 in a 3300lb car on pump gas. Since you have a way faster car to play with would you be upset if the car ran 9.2 before it started pushing water? I feel you can do it with a aluminum block and good heads but if you are like me where you always end up wanting to run faster and faster just step up to the lsx block. If you are going to pay the weight of the iron block drop the extra 1k ish and be done with the lsx block.
12-17-2008, 08:55 PM
#25
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I totally understand about always wanting to go faster, but I already have a car for that. So to answer you question, NO I wouldn't be too upset if it only ran low 9's.
I don't want to push water so I may lean towards aftermarket heads with a thicker deck if that is in fact the reason behind the problem. I would like to hear from people that have pushed water on what bore they have, how many bolts per cylinder, what diameter bolts or studs they had and what gaskets they use.
I don't want to push water so I may lean towards aftermarket heads with a thicker deck if that is in fact the reason behind the problem. I would like to hear from people that have pushed water on what bore they have, how many bolts per cylinder, what diameter bolts or studs they had and what gaskets they use.
Last edited by tt69camaro; 12-17-2008 at 09:00 PM.
12-17-2008, 11:01 PM
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lq9 heads are nice for boost, they have a big combustion chamber witch is 72cc i believe.
but they are no good over about 1000hp because i think they are 4 bolt per cylinder (so is the lq9 block) (not sure correct me if i am wrong ) so yo will be blowing allot of head gaskets if you decide to run allot of boost. i think the lq9 is perfect for you: you are on a budget and you want something reliable and cheap to fix down the road.
but they are no good over about 1000hp because i think they are 4 bolt per cylinder (so is the lq9 block) (not sure correct me if i am wrong ) so yo will be blowing allot of head gaskets if you decide to run allot of boost. i think the lq9 is perfect for you: you are on a budget and you want something reliable and cheap to fix down the road.
12-18-2008, 07:35 AM
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i think 20 psi would be sufficient to reach your 1000rwhp gain. i wouldn't go above 20 because of the head gaskets issues. there is a guy on this forum that owns a very nice white ss camaro with a custom twin turbo system and i believe he is using an lq9. maybe he can chime in because he actually has that engine and he is using it to make close too 1000whp
12-18-2008, 10:13 AM
#35
Low 8 second cars are hardly street cars. High 9s is plenty stupid fast for a street car and you are going to have enough traction problems at that power level.
6.0 iron or ls2 can easily give you 1000rwhp no problem and you can hit high 9s with think between 700 and 800, would think low 9s to llow 8s at 1000rwhp. 6.0 iron blocks have gone mid 1000s with thick deck heads.
Lsx is great if you want big displacement..427 or 454 type of thing and if you want to go over 1500 hp. You don't need to do anything fancy on the 6.0 iron to put 1000rwhp thru them.
You can search for the old boosted lists they are there if you search and you can see many combos,their dyno numbers and times.
If you truly are going for 8s with your "street cough cough car" then would go to the lsx and would check out that last posters deal. If I would have wanted to go 427 or bigger would have went lsx most likely or possibly l92 or ls7 if was staying aluminum. The extra few pounds of iron is no big deal to me.
6.0 iron or ls2 can easily give you 1000rwhp no problem and you can hit high 9s with think between 700 and 800, would think low 9s to llow 8s at 1000rwhp. 6.0 iron blocks have gone mid 1000s with thick deck heads.
Lsx is great if you want big displacement..427 or 454 type of thing and if you want to go over 1500 hp. You don't need to do anything fancy on the 6.0 iron to put 1000rwhp thru them.
You can search for the old boosted lists they are there if you search and you can see many combos,their dyno numbers and times.
If you truly are going for 8s with your "street cough cough car" then would go to the lsx and would check out that last posters deal. If I would have wanted to go 427 or bigger would have went lsx most likely or possibly l92 or ls7 if was staying aluminum. The extra few pounds of iron is no big deal to me.
12-21-2008, 11:56 AM
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Lets talk about cylinder heads. I've been told the L92's are the "best bank for the buck" production heads but are limited by the thin deck. As far as aftermarket goes, I was told the trick flow's were the best. Who agrees/disagree's with that. How about some insite on heads? Would it be best to get cnc'd diret from the head manufacturer or is it a better option to have a company that has cnc programs for certain castings do it?