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

what rods pistons for 355

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Old 02-19-2010, 09:18 PM
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Default what rods pistons for 355

wanting to build a 355 using stock crank and 5.7" rods and cc306 cam mild ported heads whats a good choice for rods and pistons brand part number. what oil pump should i use? will the patriot gold extreme springs be alright with this cam? what size injectors, torque converter? sorry for so many questions but im needing some info. this is my first engine build. brand and part numbers will help me alot please

i already have 3.73 gears eaton posi LT headers installed
i have 1.6 pro mags, 7/16 arp studs, trickflow guideplates, cc306 cam bought for this build

my goals are around 400 RWHP if that helps any
Old 02-19-2010, 09:19 PM
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Wow...posting this again huh???
Old 02-19-2010, 09:19 PM
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lol, I do the same thing in like 4 forums lmao
Old 02-19-2010, 09:20 PM
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You could use a stock rod, aftermarket "I" beam, or "H" beam. It just depends how much you wanna spend. I'd say go with Diamond for the pistons.
Old 02-19-2010, 09:26 PM
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Not sure what springs or torque converter, but doing a build like that stock rods and a stock oil pump will work just fine.
Old 02-19-2010, 09:36 PM
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is it cheaper to put in new rod bolts and have rods reconditioned or buying new performance rods?
Old 02-19-2010, 10:22 PM
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depends on how much money u want to spend and hp.some egale sir rods with je,srp pistions be a nice little build.
Old 02-19-2010, 10:31 PM
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whats a good scat forged rod part #
Old 02-20-2010, 05:57 AM
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This will provide some really great info for your build
ellweinengines.com/EllweinEnginecomponents/355kit.htm
Old 02-20-2010, 06:19 AM
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I would look at a 6" rod since you want to buy new ones anyway. Compstar(preferred) or Scat capscrew rod with a Mahle flat top piston. Not the cheapest way to go but very good parts for the money.

Injectors 30lbs or bigger should do.

Torque converter I would say talk to Edge, Yank, ATI, or Vigilante, probably looking at 3200+ even if you tell them primarily street with little track time. If you want track performance and still good on the street probably more like 3600. Modern QUALITY stalls drive pretty well.
Old 02-20-2010, 07:37 AM
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i have a forged 355 from eagle .eagle forged crank ,forged i beam rods ,mahle flatops with a -4cc , i spool mine up all the time to 7 k ,on top of a 200 shot i pulled the heads and cam to do a swap this winter and they are holdin great .the eagle rods are cheaper than recondition old stockers and they come with a.r.p hardware the mahle pistons were a little expensive but worth it as far as strenght go . for a eagle rotating assembly with a cast crank forged top end its about 1400 bills .forged crank "recomended" was 7oo more all balanced and what not "get it rechecked" .if your gonna go in might as well do it all on one shot and get the best ya can afford
Old 02-20-2010, 11:59 AM
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what hp,rpm rating and psi fastener stregth sould i be looking for with rods? using cc306 or gm847 cam also can i use pistons made for gen1 motors?
Old 02-20-2010, 12:33 PM
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internally the lt1 is the same as any 87 up rotating assembly
Old 02-20-2010, 06:13 PM
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Originally Posted by 93v8clone
internally the lt1 is the same as any 87 up rotating assembly
Not only that, but the rods and pistons from any Gen I SBC will work as well. Specifically, all 1-piece RMS cranks from 87 and up work in an LT1.
Old 02-21-2010, 04:09 PM
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some rods have a rpm rating listed and others dont is this important?
what horse power rating should i have the rods at?
might go with gm847 cam or simalar so ill be reving the **** out of it and dont want a rod or bearing going?
Old 02-21-2010, 07:51 PM
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there is a lot more to it than that pal,in all honesy go to a reputable machine shop tell him what ya want ,listen to what he says .without some sreious heads that cam isnt gonna do ya any justice ,on a stock virgin head the biggest id do is a cc503 but talk to the machinist and go from there
Old 02-21-2010, 09:02 PM
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im running speed pro forged piston 2256 part number i believe and scat 4340 i beam rods.. this combo will hold alot of power(as long as its balanced right)
Old 02-21-2010, 10:17 PM
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im going to run what ever i need to on heads i swear thats all i ever hear i just want to know what i need to do bottom end wise
Old 02-22-2010, 09:29 AM
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ok here are a couple part numbers for you
MAHLE flat top piston for 5.7 rod
sbc550030f05
Mahle flat top piston for 6 rod
sbc250030f05

scat I beam rod part number
5.7 2-icr5700
6.0 2-icr6000

If you want the better 7/16 capscrew add 7/16 after the part number
this is the rod I would recommend
Old 03-12-2010, 09:40 PM
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6" rods? deck heighth?


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