need piston help
Thread Starter
11 Second Club
Joined: Aug 2004
Posts: 891
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From: minneapolis,mn
need piston help I have a 408 that I'm building. I have a 4.00 eagle crank a 2002 6.0 iron block scat 6.125 rods tsp stage 1.5 ls6 heads. I am trying to get to 13:1 compression is there a piston out there to accomplish this or do I need to special order them? This engine will be a E85 moter when its done. I have been looking for high compression lsx's but haven't seen many around here is there a reason that no one runs high compression on a ls1? Oh this will be a spray baby also.
Originally Posted by 1MEANGTO
I have a 408 that I'm building. I have a 4.00 eagle crank a 2002 6.0 iron block scat 6.125 rods tsp stage 1.5 ls6 heads. I am trying to get to 13:1 compression is there a piston out there to accomplish this or do I need to special order them? This engine will be a E85 moter when its done. I have been looking for high compression lsx's but haven't seen many around here is there a reason that no one runs high compression on a ls1? Oh this will be a spray baby also.
Just use this.
http://www.rosspistons.com/calculator.php
or
http://www.csgnetwork.com/compcalc.html
Assuming you have a 4.030 Bore X 4.00 Stroke and 61 CC Chambers you're going to need a small dome piston to accomplish this. Most off the shelf pistons will net you somewhere in the mid 12's.
http://www.rosspistons.com/calculator.php
or
http://www.csgnetwork.com/compcalc.html
Assuming you have a 4.030 Bore X 4.00 Stroke and 61 CC Chambers you're going to need a small dome piston to accomplish this. Most off the shelf pistons will net you somewhere in the mid 12's.
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You should be in pretty good shape using E85 from a CR standpoint. It has twice the Latent Heat of Vaporization as 100% gas. But of course it is also dependant on DCR. Good luck.
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Originally Posted by gun5l1ng3r
Why would it be bad for detonation?
On E-85 I wouldn't be too worried though.
Must be nice living in a state that has that choice at the pump. Freedom from imported oil and imported cars! We only have 3 stations that I'm aware of in the state that carry E85. I hear California has only a few. So much for them being so progressive!
Have you thought about using alcohol in place of your gas in your nitrous system?
Have you thought about using alcohol in place of your gas in your nitrous system?
Thread Starter
11 Second Club
Joined: Aug 2004
Posts: 891
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From: minneapolis,mn
Well I have been told that the alcohol will wreck the O-rings in the noids. In fact I have expieranced that already with only a 10% mix of ethanol. It seams to swell the o-rings and the noid stays partially open. Well I had a problem with the Cold fusion but never the NX.
