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Need turbo/motor build advice.

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Old 09-19-2011, 11:48 PM
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Default Need turbo/motor build advice.

Plain and simple, I am sick of filling bottles already. I currently have a ms3 cam/ported ls6 oil pump/ls2 timing chain etc. with a harris speed works wet plate kit. The car runs great, but I fabbed up a turbo setup on my last camaro (3.8) and I want to do the same with this car.

There are a few things I would like to get opinions about. I am looking for the cheapest, but "safest" route. I would like to be around 750rwhp after its all said and done.

1- Put in a boost cam and put a forged rod/piston in my ls1.

2- pick up a local lq9 long block from a friend that has a bent rod, and forge that, and sell my current setup in the car now.

3- I really like the master power turbo's. I have had great luck with them in the past, and they are hard to beat for the money. Will a t76 (.96 a/r) get me to my goal?

I am going to be fabbing up a truck manifold setup. I would like to relocate my battery, and mount the turbo in the stock battery location, if this is possible. I still have a/c and I would like to keep it, but I am not affraid to remove it for clearance.

any opinions? I am mostly stumbled on doing the forged lq9 or my ls1. I still have stock 241 heads on the car as well. If I forge my ls1, should I go with a 317 head to drop the compression down? or will the stock 241's be fine? This is my first time building a motor for boost. I am a newb about it at the moment....
Old 09-20-2011, 12:41 AM
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Stick with your alum. block to save weight and since you already have it.

241 heads will work well, and you could use a ls9 headgasket to help with sealing as your going to have to push that mpt76 to prolly the teens psi wise to make 750 at the wheels, but it's attainable, but might not be attainable if you drop the c.r. too much. Dropping the c.r. ratio with 317's will make less of a chance of detonation on pump gas so if your not opposed to running race gas at the track I'd look for 9.1:1-9.5:1.
Old 09-20-2011, 08:20 AM
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Thanks for the info.

I am not a race gas person honestly. The car has always been on pump gas and alot of the summer I DD the car, rain or shine.

so, go with a 317 head on my 346?

what CC pistons would you recommend with stock 241's? or stock 317's?

also, is there a "lopey" boost cam they make? Thats one thing I Do not want to lose with this build. The cam lope is my favorite part, and I would like to keep it. I know that with alot of overlap, it causes a boost drop. This is why I planned on changing my ms3, but would like to find a boost cam that sounds identical. Possible?

Last edited by kidcamaro98; 09-20-2011 at 08:36 AM.
Old 09-20-2011, 11:05 AM
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I am pretty sure Master Power does not sell to the US anymore... unless you were planning on buying used.
Old 09-20-2011, 11:55 AM
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Originally Posted by westtexasbuff
I am pretty sure Master Power does not sell to the US anymore... unless you were planning on buying used.
http://cgi.ebay.com/ebaymotors/Maste...item20b647e541

http://cgi.ebay.com/ebaymotors/Maste...item1e60c48a13

http://cgi.ebay.com/ebaymotors/Maste...item1e60b6483c

http://cgi.ebay.com/ebaymotors/Maste...item1e60b5de75

http://cgi.ebay.com/ebaymotors/Maste...item20b647a261

http://cgi.ebay.com/ebaymotors/Maste...item20bbbb07d0

im not worried about it...
Old 09-20-2011, 12:02 PM
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I kind of curious too of which off the shelf turbo cam has the most aggressive profile.
Old 09-21-2011, 12:17 PM
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Brutespeeds blower cam is pretty lopey. my buddies car has it and it sounds awesome. Or you could talk to VA Speed about something custom, im sure they can help. Stick with the forged ls1 too. throw some rods and pistons in it and it will more than handle 750whp. now since you are kinda saving money by not ditching the ls1.. you should look into a lil bigger turbo. that mp76 will have to work pretty damn hard to hit your goal. the precision 76 would be perfect for what you want.
Old 09-21-2011, 08:03 PM
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Originally Posted by Ryans99ls1
Brutespeeds blower cam is pretty lopey. my buddies car has it and it sounds awesome. Or you could talk to VA Speed about something custom, im sure they can help. Stick with the forged ls1 too. throw some rods and pistons in it and it will more than handle 750whp. now since you are kinda saving money by not ditching the ls1.. you should look into a lil bigger turbo. that mp76 will have to work pretty damn hard to hit your goal. the precision 76 would be perfect for what you want.
the problem is in the past with my previous turbo camaro, I found that cheaper turbo's (master power for example) out lasted my ball bearing T72 turbonetics that was a fortune.

I was actually thinking about trying one of those "on3" turbos off ebay? I hear good things and they look pretty legit.
Old 09-22-2011, 12:47 AM
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IMO blower cams don't belong in a turbo app. The reason its so lopey is it has a lot of overlap.

A good cam that judging by it's specs that would still lope well and sound great would be the speed inc. tu2 as its lsa is 112 and has a healthy duration for a 347, but it has 11.0 degrees overlap where your ms3 has 15.5. 11 is a lot for a turbo car. I think your gonna have to kinda find a compromise in between it and the TU1 at 225/225 113. For example my cam has -3 degrees overlap IIRC.
Old 09-22-2011, 07:05 AM
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not sure a masterpower 76mm will get you there, on the other hand a pte88 will have no problem.
cheapest and best way to do it would to be buy my car, take the parts off mine and put them on yours, then sell my car as a roller or whatever...

https://ls1tech.com/forums/vehicle-c...-12-000-a.html
Old 09-22-2011, 07:54 AM
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Originally Posted by smokinHawk
not sure a masterpower 76mm will get you there, on the other hand a pte88 will have no problem.
cheapest and best way to do it would to be buy my car, take the parts off mine and put them on yours, then sell my car as a roller or whatever...

https://ls1tech.com/forums/vehicle-c...-12-000-a.html
clean car for sure, but not my style.
Old 09-22-2011, 07:56 AM
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Originally Posted by Fbodyjunkie06
IMO blower cams don't belong in a turbo app. The reason its so lopey is it has a lot of overlap.

A good cam that judging by it's specs that would still lope well and sound great would be the speed inc. tu2 as its lsa is 112 and has a healthy duration for a 347, but it has 11.0 degrees overlap where your ms3 has 15.5. 11 is a lot for a turbo car. I think your gonna have to kinda find a compromise in between it and the TU1 at 225/225 113. For example my cam has -3 degrees overlap IIRC.
so what im getting out of this, is it might just happen to be worth it try my ms3?
Old 09-22-2011, 11:00 AM
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Originally Posted by kidcamaro98
clean car for sure, but not my style.
dont look at the car, look at the parts..
just thought id through it out there.
Old 09-22-2011, 03:00 PM
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Originally Posted by smokinHawk
dont look at the car, look at the parts..
just thought id through it out there.
you mean the same parts I could buy, without buying your car? lol/
Old 09-23-2011, 07:10 AM
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then sell my car and profit
the cost of the parts are more then the cost of the car.
haha.



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