LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Building a 355 need advice

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Old Feb 10, 2010 | 12:40 PM
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Default Building a 355 need advice

okay im ready to start ording the parts for my rebuild. what i need to know is what are some good, fairly inexpensive forged rods and pistons i should look at? my plans are a 355 using the stock crank (having it turned) forged rods and pistons, set of le2 heads and a cam he recommends for about 425 to the wheels. might see a 75 shot or sts with 5 psi what do you guys recommend and can you post links to the parts this is my first built motor thanks
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Old Feb 10, 2010 | 01:33 PM
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Some good info in this old thread

https://ls1tech.com/forums/lt1-lt4-m...ottem-end.html
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Old Feb 10, 2010 | 03:36 PM
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thank you those are the rods i was looking into but mahle pistons arent forged what would be a good forged piston on there website
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Old Feb 10, 2010 | 03:42 PM
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They are Mahle forged pistons, thats what im useing

Last edited by djjab57; Feb 11, 2010 at 02:53 PM.
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Old Feb 10, 2010 | 03:44 PM
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those exact pistons are forged? sry for the newb questions this is my first time
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Old Feb 10, 2010 | 03:49 PM
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I havent looked in a while but will
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Old Feb 10, 2010 | 03:53 PM
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Yes those are the ones i have and are forged, but make sure that is the set up you want cause it is a 6 inch rod and pistons for a 6 inch rod over the stock 5.7
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Old Feb 10, 2010 | 04:01 PM
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yea i heard that the piston is smaller cause the rod is longer? dosent this free up a few horsepower? and also heard about something called piston slap? what is this it dosent sound good
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Old Feb 10, 2010 | 04:13 PM
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you wont have that problem, they say the shorter piston is good for more HP N/A and the 5.7 is better for spray cause the piston is larger and can handle it. But im going to still run a 200 shot. I dont believe i will have a problem seeing its all forged parts
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Old Feb 10, 2010 | 04:30 PM
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i wont ever run a 200 shot the most will be a 100 shot which is why i want the forged stuff also. are there any other parts i should also look into so i can start ordering some parts. like i saw somewhere else that ppl put a cloyes oversized sprocket on the crank to take up some slack? it seems like i want to build my motor preaty close to yours do you mind if i keep in contact if i have any questions down the road?
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Old Feb 10, 2010 | 04:46 PM
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Ive never heard of ppl using the Cloyes bottom sprocket to take up slack, maybe someone else can chime in on that. I know if you use the Cloyes chain you have to use an Electric water pump but not sure if you just use the bottom sprocket
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Old Feb 10, 2010 | 04:48 PM
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make sure you get the ARP bolts for heads, Mains
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Old Feb 10, 2010 | 09:42 PM
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Mahle # sbc250030f05 flat top for 6" rod
scat 2ICR6000 7/16 rods
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Old Feb 11, 2010 | 02:55 PM
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Forgot to ask but what cam you going with ?
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Old Feb 11, 2010 | 06:34 PM
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im going to talk to Lloyd about that when i order the heads from him i was hoping he could recommend something that will work good with his le2 setup and also reach my power goals. i would like the cam to be very streetable as well. i was also hoping that lloyd can point me in the right direction as fars as what roller rockers,lifters, and push rods to go with
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Old Feb 12, 2010 | 01:22 AM
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I used the Cloyes crank sprocket to take up some of the slack that my brand new LT4 Extreme Duty Timing set had. I believe this is what you're talking about.
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Old Feb 12, 2010 | 04:59 AM
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You usually only need the oversized crank sprocket if your block has been align bored/hone which usually only happens if you have new main caps installed.
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Old Feb 13, 2010 | 09:37 AM
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Lloyd recommened a 228/236 .565/.565 110 lsa what do you think? so this sprocket isnt a cheap insurance thing?
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