What crankshaft...22psi....single 94mm....iron 408ci...????
06-21-2012, 04:25 PM
#41
06-21-2012, 05:00 PM
#47
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I wouldn't put a good rotating assembly in an Oem block. 6 bolt block and heads to stay together reliabily at 1100+ personally I wouldn't want to lift a head or kick a rod out at 180mph on the street.
06-22-2012, 06:26 AM
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That turbo is still a little big and a mid frame 88 could support 1600 wheel turned up. Call forced inductions and ky turbo for help deciding a turbo that's perfectly matched. And trust me the turbo needs to be the most researched thing you look into after the motor. My friend is on his 3rd turbo because he just looked at other people and see how fast they had been with their turbos and just said that'll work. Well it didn't lol
06-22-2012, 08:06 AM
#53
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That turbo is still a little big and a mid frame 88 could support 1600 wheel turned up. Call forced inductions and ky turbo for help deciding a turbo that's perfectly matched. And trust me the turbo needs to be the most researched thing you look into after the motor. My friend is on his 3rd turbo because he just looked at other people and see how fast they had been with their turbos and just said that'll work. Well it didn't lol
06-22-2012, 09:15 AM
#55
The sayings are as good as the knowledge around here........lol
I swear....my builder told me the same thing TODAY.
Him and my fabricator are talking me into a stock crank, GOOD rods and pistons......370ci iron block.
Just deal with 800-900 RWHP and less boost and be reliable. Then build a badass LSX 6-bolt iron block later this year with a 94mm and go nuts.......
Thats probably what I'll do.......we'll see........
Thanks everyone for all the input so far though......
*******
BUT......real quick....if the stock crank will hold up to 1,000 RWHP.......then will any cheap forged crank necessarily be better and stronger, just because its forged?
Like this cheap one. They said they have a car with 1276 RWHP running pass after pass with it. Turbo application.
I can buy it for $527.00. My builder will balance it.......its a 4.1" stroke though...418ci.....FAST SPOOL.....would that be ok at the 800 RWHP level. They are looking to see if they have a 4" crank in stock. Comes with ARP 2000 cap screws.
http://www.ebay.com/itm/230805461058...058%26_rdc%3D1
OR...should I stick to a stock crank...370ci?
Thanks......
.
06-22-2012, 09:40 AM
#56
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HA yea your right :facepalm: i knew that i guess i spoke before thinking it through.. you can add sleeves but people dont normally do it cause for the price adding sleeves you can just buy a LSx block... Dont listen to me i know nothing.
Last edited by three83'camaro; 06-22-2012 at 09:53 AM.
06-22-2012, 11:35 AM
#57
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yea. i was a little high but if it is a stick car it could be close if you were going by how far you could take the turbo but i know threw an auto car a mid frame 88 should support around 1400-1500 fwhp
06-22-2012, 11:38 AM
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Here's what I would seriously consider
347 or 370
Have Forced Induction spec you a turbo like a 83mm-91mm ( a custom 83 is 1000rwhp capable)
high dollar rods like ultra H beams or similiar, Howards,etc
CP or Diamond turbo pistons
stock crank
1/2" head studs & thick deck heads
the rods might be considered overkill but I believe the price difference makes it worth it to just spend the money on a higher end rod.
You'll have a combination good for a safe 900-1000rwhp or more, I'm a believer in 1/2" head studs & thick deck heads, I've seen some serious abuse out of Kurt Urban motors that had 1/2" head studs & thick deck heads.
347 or 370
Have Forced Induction spec you a turbo like a 83mm-91mm ( a custom 83 is 1000rwhp capable)
high dollar rods like ultra H beams or similiar, Howards,etc
CP or Diamond turbo pistons
stock crank
1/2" head studs & thick deck heads
the rods might be considered overkill but I believe the price difference makes it worth it to just spend the money on a higher end rod.
You'll have a combination good for a safe 900-1000rwhp or more, I'm a believer in 1/2" head studs & thick deck heads, I've seen some serious abuse out of Kurt Urban motors that had 1/2" head studs & thick deck heads.
06-22-2012, 02:46 PM
#59
Yeah sorry about that. I could say it was late, but it wasn't. I just wasn't thinking.
Definitely not, the X275 is only rated at 1600chp. I have read about them making 1400rwhp though, on pure X275 racecars though. I would run the 94mm on a build like this.
Yep. I was under the assumption that he wanted a stroker. But yeah Stock Crank, Good Rods, and Good Pistons.
Yep. I was under the assumption that he wanted a stroker. But yeah Stock Crank, Good Rods, and Good Pistons.