what is the best rotating assy for a blown ls2?
Thread Starter
On The Tree
Joined: Jun 2006
Posts: 165
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From: Pendleton, Indiana
what is the best rotating assy for a blown ls2? building an alum block ls2 and wondering what is the best components for the bottom end. looking at the callies dragonslayer and compstar cranks. will the lighter weigh of the dragonslayer crank sacrifice durability with the blower (F1R procharger) hanging off the front? and will the compstart crank hold up to 1000+ hp??? also wondering which engine size would be better suited for the combo short stroke 364? or a 4.000" stroke 402? not looking for the cheapest parts but i only want to purchase these once. the car is an 81 Z28 with the ls2 mentioned above with L92's and a cog drive f1r. shooting for mid to low 9's. thanks for the help
building an alum block ls2 and wondering what is the best components for the bottom end. looking at the callies dragonslayer and compstar cranks. will the lighter weigh of the dragonslayer crank sacrifice durability with the blower (F1R procharger) hanging off the front? and will the compstart crank hold up to 1000+ hp??? also wondering which engine size would be better suited for the combo short stroke 364? or a 4.000" stroke 402? not looking for the cheapest parts but i only want to purchase these once. the car is an 81 Z28 with the ls2 mentioned above with L92's and a cog drive f1r. shooting for mid to low 9's. thanks for the help
As far as the blower goes, no clue. I like the 364-370 for street strip cars. No doubt a 4 inch stroke motor can make crazy hp and be reliable. I just think the 370 is more reliable, especially with a longer rod. I went with a PT88, so a 402 was out of the question for me. If I had a GT91 then i would have considered the 402. The 370+88 is much more street friendly from what I have seen out there. But then again opinions are like ********... Best of luck
Thread Starter
On The Tree
Joined: Jun 2006
Posts: 165
Likes: 0
From: Pendleton, Indiana
sorry for the late reply, but this is some really helpful info, i will definately have to get some info on that erl super deck block, because im looking for a machine shop that handle ls engines, and only a few hours north of ky, so i'll be getting in contact with you soon for some info. also have a question about rods, would the hd I beam be overkill for this particular setup? or are the h-beam rods suffecient?
