346ci FI vs 408ci FI
04-26-2007, 06:56 PM
#142
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Ok now this is where I get lost I figured I was close on how to pick the turbo but how do i know what kind of motor ci i would need to wind that turbo up.... Is there a math equation or a simple idea behind it?
04-26-2007, 07:04 PM
#143
Originally Posted by Kuhnstyle86
Ok now this is where I get lost I figured I was close on how to pick the turbo but how do i know what kind of motor ci i would need to wind that turbo up.... Is there a math equation or a simple idea behind it?
Its math related....call and ask for Jose tomm. He will give you the info needed.
04-26-2007, 07:57 PM
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Originally Posted by cablebandit
you do know my "convertible" just lifted the heads this past weekend dont you?
04-26-2007, 08:34 PM
#150
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Origonally posted by 52172
It will make more power on pump or race gas. Just depends on how much you want to spend on more power. A 348 will take you up to 650 rwhp with pump gas and if you want more than that your gonna need to add meth or cubes. All depends where you want to spend your money and the combo you want.
[QUOTE]
This is a little late and going back to the beginning of the thread but i wanted to add a point. A friend of mine had a 99 FRC Vette with a 346 forged bottom end, Stock LS1 heads with a spring upgrade, Blower cam .580ish range ZO6 intake, and a A&A D1sc blower kit. 700 RWHP at a hair over 10 psi on a Dynojet. Did see 14+psi a few times on the street. No meth, 93 octane pumpgas DAILY driver. Done right, big power is achievable from small cubes on pump gas. Texas Speed currently owns the car with the same short block but with twin turbos, I hear now making 995 rwhp. The red one on their home page.
It will make more power on pump or race gas. Just depends on how much you want to spend on more power. A 348 will take you up to 650 rwhp with pump gas and if you want more than that your gonna need to add meth or cubes. All depends where you want to spend your money and the combo you want.
[QUOTE]
This is a little late and going back to the beginning of the thread but i wanted to add a point. A friend of mine had a 99 FRC Vette with a 346 forged bottom end, Stock LS1 heads with a spring upgrade, Blower cam .580ish range ZO6 intake, and a A&A D1sc blower kit. 700 RWHP at a hair over 10 psi on a Dynojet. Did see 14+psi a few times on the street. No meth, 93 octane pumpgas DAILY driver. Done right, big power is achievable from small cubes on pump gas. Texas Speed currently owns the car with the same short block but with twin turbos, I hear now making 995 rwhp. The red one on their home page.
04-26-2007, 08:35 PM
#151
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Originally Posted by cablebandit
you dont know our history as I dont like to sling mud on the internet. I will delete my post
Jerry if your comment was directed to me then, no I didn't know about your head problems. I don't think my other guys knew this as well. I knew you posted about some problems, but didn't know the specifics. None of it was directed to you I can assure you, its just the nature of the beast when running an LS1 with big boost. Head lifting is something we see alot....not just your car. If their is a problem give me a call. You know I'll tell you direct....I don't sugar coat anything...period. I've never had an issue, so their should be none to arise, I don't think. Again I appologize if myself or one of my guys may have said something to offend you. I've always said give me a shout anytime, I still want to check the car our when you run.
04-26-2007, 08:53 PM
#153
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[QUOTE=RamAirTA]Origonally posted by 52172
It will make more power on pump or race gas. Just depends on how much you want to spend on more power. A 348 will take you up to 650 rwhp with pump gas and if you want more than that your gonna need to add meth or cubes. All depends where you want to spend your money and the combo you want.
This is a little late and going back to the beginning of the thread but i wanted to add a point. A friend of mine had a 99 FRC Vette with a 346 forged bottom end, Stock LS1 heads with a spring upgrade, Blower cam .580ish range ZO6 intake, and a A&A D1sc blower kit. 700 RWHP at a hair over 10 psi on a Dynojet. Did see 14+psi a few times on the street. No meth, 93 octane pumpgas DAILY driver. Done right, big power is achievable from small cubes on pump gas. Texas Speed currently owns the car with the same short block but with twin turbos, I hear now making 995 rwhp. The red one on their home page. But wouldn't meth injection make that combo more reliable at around 10 psi? Damn so I just found out what way I am going reading about this car. FI with 7 or 8 psi on a stock bottom end with meth injection. And then when the car blows forged internals!
It will make more power on pump or race gas. Just depends on how much you want to spend on more power. A 348 will take you up to 650 rwhp with pump gas and if you want more than that your gonna need to add meth or cubes. All depends where you want to spend your money and the combo you want.
This is a little late and going back to the beginning of the thread but i wanted to add a point. A friend of mine had a 99 FRC Vette with a 346 forged bottom end, Stock LS1 heads with a spring upgrade, Blower cam .580ish range ZO6 intake, and a A&A D1sc blower kit. 700 RWHP at a hair over 10 psi on a Dynojet. Did see 14+psi a few times on the street. No meth, 93 octane pumpgas DAILY driver. Done right, big power is achievable from small cubes on pump gas. Texas Speed currently owns the car with the same short block but with twin turbos, I hear now making 995 rwhp. The red one on their home page.
04-26-2007, 08:55 PM
#154
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Well the Viper is no mas, off to overseas....can't pass up on more $$ in my pocket...lol. Got me an FD RX7, and going big cubed LS2 
. Also got a skyline coming....don't know what the heck me and my buddy Jason are going to do with that thing. Probably another motor swap...lol. I am going to try to make it down to Steele soon. Let me know for sure if your going.
. Also got a skyline coming....don't know what the heck me and my buddy Jason are going to do with that thing. Probably another motor swap...lol. I am going to try to make it down to Steele soon. Let me know for sure if your going.
04-26-2007, 11:17 PM
#155
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Originally Posted by Tirefire
I would say go with your original 346 and forge it to ****. Buy some heads, meth, 9 inch and built tranny. I'll be adding some afr 225 heads, meth and a built tranny when I get tired of my setup or when it goes bye-bye.
04-27-2007, 09:49 AM
#156
Might be easier/cheaper to just buy a forged 346/347 from a sponsor such as TSP. You will get the entire shortblock assembled, balanced, and ready to go in. That way you wont have to find a machine shop to install the forged parts if your not sure how to build a motor on your own. Also, your stock ls1 short block should fetch you a decent amount of money on here or on ebay.
04-27-2007, 11:47 AM
#158
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^
Originally Posted by bboyferal
I, myself, found it cheaper to buy it assembled... Moreover, doing so allowed me to sell my old stock longblock, which with 20k miles I sold for $1k... That helped even more.
04-27-2007, 12:18 PM
#159
Originally Posted by bboyferal
^
Haha I didnt even see that before, but yea its def worth it to buy it assembled as most shops will warrantee the engine and will take it back if there was any issue due to the build whereas if you do it on your own and you mess it up your screwed.
04-27-2007, 12:55 PM
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What about reliability for street driven cars?
An AFR headed, 8:1 360 ci iron block with stock crank and forged rods/pistons, LS6 cam will last forever with a T88/intercooler on it at 15#s boost on pump.
(With the right tuning, fuel setup of course)
The iron block will not suffer from block distortion like the alum one will and the rings/bore should look great for a several seasons easily. No sleeve problems, no distortion, little less likely to lift heads/push water etc.
I think the ironblock is a no brainer unless you are obsessed with weight
An AFR headed, 8:1 360 ci iron block with stock crank and forged rods/pistons, LS6 cam will last forever with a T88/intercooler on it at 15#s boost on pump.
(With the right tuning, fuel setup of course)
The iron block will not suffer from block distortion like the alum one will and the rings/bore should look great for a several seasons easily. No sleeve problems, no distortion, little less likely to lift heads/push water etc.
I think the ironblock is a no brainer unless you are obsessed with weight