Just Another 408
#1
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Just Another 408
Ok guys I'm back. The "Millennium Falcon" busted a lifter back in July and ruined the LS1. Before i took the engine apart i bought a cam, the XER281HR its a 595/598 lift 281/283 duration(232/234 @.050) 112 duration. Since then i have recently bought a Gen IV 6.0 block (currently at machine shop) and a full eagle 408 stroker kit! I plan on running a holley 102 tb on a Holley sniper intake with a set of PRC 2.5 317 heads, LS7 lifters, chromoly pushrods, and TSP 1 7/8 headers. i was just wondering if the cam will be too small for this set up, id like to use it since i already have it! it will also be dyno tuned by Tick Performance and it is an M6 car with stock 10bolt 3.42 (plan on changing to a 12 bolt or 9 inch later)! Any input would be greatly appreciated! Also need injector options! and estimates on HP/TQ numbers Thanks LS Nation!!!
#2
TECH Senior Member
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Before i took the engine apart i bought a cam, the XER281HR its a 595/598 lift 281/283 duration(232/234 @.050) 112 duration. Since then i have recently bought a Gen IV 6.0 block (currently at machine shop) and a full eagle 408 stroker kit!
Something like a 238/244 might be more ideal for the 408 for hp. One cam guru told me for max hp my 383 LS1 should be looking at ~242/248 duration.
I plan on running a holley 102 tb on a Holley sniper intake with a set of PRC 2.5 317 heads, LS7 lifters, chromoly pushrods, and TSP 1 7/8 headers.
What compression will the PRC 317 S2.5's have? 9.5 to 1 or 10 to 1 or something else?
Unless the goal is forced induction later, more compression up to 11.8 to 12.0 to 1 is good if you have 93 octane and a good tune.
i was just wondering if the cam will be too small for this set up, id like to use it since i already have it! it will also be dyno tuned by Tick Performance and it is an M6 car with stock 10bolt 3.42 (plan on changing to a 12 bolt or 9 inch later)! Any input would be greatly appreciated! Also need injector options! and estimates on HP/TQ numbers Thanks LS Nation!!!
I would read up 42# fuel injectors are probably a starting point.
WS6 Store is very good with helping spec injectors.
If Tick is going to be doing the tuning, I would also talk with them about cam and injector selection.
Good Luck!
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The car eventually won't be a daily driven car but will be driven a lot. I'm building it currently to shut up a friend of mine that has a cammed 04 Z06 a little bigger specs than the one I've got with ported heads, claims 480rwhp! As far as street ability it's not too bad. I don't live or drive in a populated area, mostly backwoods country side with some highway! It's already got a stage three clutch that everyone says is for the hulk lol! The other cam I was entertained by was the SNS stage 3 by Tick! My overall goal is the 480rwhp! As for heads I also considered the PRC 2.5 ls6 castings as they are the same price! I have considered Turbo later on but not certain! And I really am set on using the sniper intake. The low profile one so the runners aren't as long!