How strong is slp's zl402 iron short block
01-30-2007, 09:01 PM
#1
How strong is slp's zl402 iron short block I ordered their zl402 high comp. iron short block.It comes with 4.000'' eagle 4340 forged steel crank,4.000 ross 2618 forged alloy pistons with -6.00ccdish,eagle6.125'' h-beam rods and compression is suppose to be 11.3:1.I wanna know how much horse power it will handle cause I wanna spray a 200 wet shot on it?I'll be using tsp's stg.3 heads with 65cc chamber and ms4 and I'm debating on which head gaskets to run .40 cometic or .45,two more question will their be any ptv clearance issues and what will my compression be at?Let me know guys thanks. 
01-30-2007, 09:24 PM
#2
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Originally Posted by sac
I ordered their zl402 high comp. iron short block.It comes with 4.000'' eagle 4340 forged steel crank,4.000 ross 2618 forged alloy pistons with -6.00ccdish,eagle6.125'' h-beam rods and compression is suppose to be 11.3:1.I wanna know how much horse power it will handle cause I wanna spray a 200 wet shot on it?I'll be using tsp's stg.3 heads with 65cc chamber and ms4 and I'm debating on which head gaskets to run .40 cometic or .45,two more question will their be any ptv clearance issues and what will my compression be at?Let me know guys thanks.
01-31-2007, 11:04 AM
#7
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Well they had oil burning issues when they first came out, maybe they fixed that. Anyways, too late, no need to panic. Put it all together, we will see.
As for the gasket, run a GM MLS 6.0 4.060 bore. They are .050 compressed and will work well. Use ARP studs to clamp it down.
with -6cc you should be OK on PTV but I would recommend you measure if the valves are 2.055 or bigger.
Also run LS7 or Cadillac lifters. as for p-rods gonna have to measure.
As for the gasket, run a GM MLS 6.0 4.060 bore. They are .050 compressed and will work well. Use ARP studs to clamp it down.
with -6cc you should be OK on PTV but I would recommend you measure if the valves are 2.055 or bigger.
Also run LS7 or Cadillac lifters. as for p-rods gonna have to measure.
