LT1 "forged" Piston choices?
03-31-2009, 04:16 PM
#1
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LT1 "forged" Piston choices? What forged pistons can be used in the LT1? Do you have to stay with the original "style" or can the earlier piston be used? I was looking at these Speed Pro Power forged # L2256F flat top 9.75.1 w/64cc head, can any dome pistons be used like the L2304F .100" dome 10.5.1 w/64cc heads, these are earlier LT1 style pistons.
03-31-2009, 04:25 PM
#2
i have used the 2256s on many N2o motors and had great results only drawback, these pistons are heavy...the compression with an Lt1 head is roughly 11:1 +/-... depending on the amount of N2O you plan to use you may also want to look at the MAHLE pistons
DON'T BOTHER WITH DOME TOPS
DON'T BOTHER WITH DOME TOPS
03-31-2009, 06:29 PM
#4
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Gen 1 and Gen 2 pistons are interchangeable, the only thing is the assembly MUST be balanced (normally any time you change pistons you do anyway) because of the Gen 1's being heavier.
Mahle is a quality product and the company stands behind them, but they aren't the cheapest.
Mahle is a quality product and the company stands behind them, but they aren't the cheapest.
03-31-2009, 06:47 PM
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I also use the SRP/JE 11:1 flat tops with a -5cc valve relief. I chose to go with the 5.7in light weight forged rods from eagle so I would have a little more piston for the gas. The JE's are pretty light already from what I can recall and when you combine that with those rods and get some extra weight taken off when balanaced you will have a pretty fast revving motor.
03-31-2009, 08:10 PM
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I'm not trying to be an *** but have you tried it? What makes you assume that? That's just one of those typical LS1tech rumors that float around when someone melts a piston do to error. I know plenty of people who have gone 200+ on SRP's and I will also be doing the same. Hell I know people who have shot 200 on stockers in an lt1 and over 250 on stock LS1's. It's all in the tune/set-up. SRP's will handle a 200 hit juuuust fine.
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03-31-2009, 08:48 PM
#8
yes i have, i am not in the habbit of rumor sharing nor assumption ! srp was created by JE as a lesser priced version of thier pistons!
there are many people out there that have put 175 and 200hp hits on stock Lt1 pistons does that mean they can take it? for the amount of spray the OP is using any of the forementioned pistons will be fine and from my experience anything more than 200hp shot should have the better set of pistons and rods in it. tune has a great deal to do with the longivity also.
there are many people out there that have put 175 and 200hp hits on stock Lt1 pistons does that mean they can take it? for the amount of spray the OP is using any of the forementioned pistons will be fine and from my experience anything more than 200hp shot should have the better set of pistons and rods in it. tune has a great deal to do with the longivity also.
03-31-2009, 08:49 PM
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What about these rods, there the Scat 4340 forged I beam with 3/8 8740 wave-loc bolts, or would 7/16s be better.
I'm just looking down the road if my car doesn't sell, i'll just freshen up the long block, but i'll never ever hit it with more then 150, right now theres a solid 11.8s in it on 100 shot, so with a fresh build with decent ****, & a perf. cam/1.6 rockers, i'm sure with a 150 shot shifting @ 64-6500 it'll go 10.99, if not better, but should see 11.2-11.3s on a 100-125 shot, as for the stock pistons holding up along with everything else lol, yes tune has alot to do with it, but even if the tune is spot-on, if the RPMs get too high, you'll let go of a bearing/rod faster then anything from a stock rod bolt flexing, that would be my main concern, especially with its mileage, even on 100 shot it could happen.
I'm just looking down the road if my car doesn't sell, i'll just freshen up the long block, but i'll never ever hit it with more then 150, right now theres a solid 11.8s in it on 100 shot, so with a fresh build with decent ****, & a perf. cam/1.6 rockers, i'm sure with a 150 shot shifting @ 64-6500 it'll go 10.99, if not better, but should see 11.2-11.3s on a 100-125 shot, as for the stock pistons holding up along with everything else lol, yes tune has alot to do with it, but even if the tune is spot-on, if the RPMs get too high, you'll let go of a bearing/rod faster then anything from a stock rod bolt flexing, that would be my main concern, especially with its mileage, even on 100 shot it could happen.
Last edited by LM97Z; 03-31-2009 at 08:59 PM.
03-31-2009, 08:51 PM
#10
You would think a forged piston would be that much stronger, ive seen srp in alot of good setups holding up.
Care to explain why you say this?
03-31-2009, 08:53 PM
#11
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Srp is made by JE is it not i think this is a misconstrude statement any forged name brand piston is going to hold up.
03-31-2009, 08:59 PM
#12
i suggested to not hit them with a bunch that is all,just as Mahle is not designed for a bunch of spray either. just because someone does it does not mean they can handle it.
they are durable but they are not a dedicated N2O piston
i suppose it means nothing when a manufactuer does state "moderate turbo/nitrous......
http://www.srp.com/cat/professional/...flat-pro.shtml
they are durable but they are not a dedicated N2O piston
i suppose it means nothing when a manufactuer does state "moderate turbo/nitrous......
http://www.srp.com/cat/professional/...flat-pro.shtml
Last edited by 96lt1m6; 03-31-2009 at 09:09 PM.
