View Poll Results: Which block you would run for boost?
LSX Iron Block
66
64.71%
Warhawk
25
24.51%
Other, Explain
11
10.78%
Voters: 102. You may not vote on this poll
Lsx vs warhawk
01-29-2009, 10:38 AM
#1
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Lsx vs warhawk besides ones is alumium and one is iron.
what is pros and cons of each.
and which would you do?
goals,
well i have a ls3 block. but i was told that 1200 wheel horse is pushing it to its max. so i would like somthing i could say would easly take 1500 wheel. idk if i will ever get to that point. but i want to know if it will take it
what is pros and cons of each.
and which would you do?
goals,
well i have a ls3 block. but i was told that 1200 wheel horse is pushing it to its max. so i would like somthing i could say would easly take 1500 wheel. idk if i will ever get to that point. but i want to know if it will take it
Last edited by Big Bird WS6; 01-29-2009 at 11:48 AM.
01-29-2009, 11:43 AM
#3
Well if was going for over say 1500 engine hp then might consider an lsx iron block. To save the extra weight with a warhawk is not really worth the thousands more over the price of the lsx iron block.
The main reason to go lsx or warhawk is if you wanted big displacement like 427 or 454 type of thing or even bigger.
For a race car where person is shooting for say 7s or 6s then can see these big cube FI builds.
For a street car a 347 or 402 or 408 will give more than enough torque and hp for most and can personally vouch for the power and torque of a built 408, even off boost it is no slouch on the street. A decently done FI build with either of the smaller size motors will be more than a handful on the street with the main factor being traction not power output.
I doubt I will ever be able to fully hook even my 408 with higher boost going thru it. And not sure want to run drag radials all the time or if they will even totally hook it up without always being heated up first. And looking into a variable traction control to help in the hook up area and for overally safety. Spinning the tires off at 100 mph frankly scares me !
So for street would stick with ls1 built with at least good rod bolts and forged pistons, crank would be optional. If want more displacement than of course you have the reasonable priced 6.0 iron block, you have the ls2 and the l92 aluminium also pretty reasonable. L92 can be punched out to 427 for sure maybe bigger??.
Unless was a sponsored race car then would go lsx iron block for huge power.
Seems like best bang for the buck. "Warhawk" is a cool sounding word though.
The main reason to go lsx or warhawk is if you wanted big displacement like 427 or 454 type of thing or even bigger.
For a race car where person is shooting for say 7s or 6s then can see these big cube FI builds.
For a street car a 347 or 402 or 408 will give more than enough torque and hp for most and can personally vouch for the power and torque of a built 408, even off boost it is no slouch on the street. A decently done FI build with either of the smaller size motors will be more than a handful on the street with the main factor being traction not power output.
I doubt I will ever be able to fully hook even my 408 with higher boost going thru it. And not sure want to run drag radials all the time or if they will even totally hook it up without always being heated up first. And looking into a variable traction control to help in the hook up area and for overally safety. Spinning the tires off at 100 mph frankly scares me !
So for street would stick with ls1 built with at least good rod bolts and forged pistons, crank would be optional. If want more displacement than of course you have the reasonable priced 6.0 iron block, you have the ls2 and the l92 aluminium also pretty reasonable. L92 can be punched out to 427 for sure maybe bigger??.
Unless was a sponsored race car then would go lsx iron block for huge power.
Seems like best bang for the buck. "Warhawk" is a cool sounding word though.
01-29-2009, 11:59 AM
#6
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both the warhawk and the lsx block require some additional work to be bulletproof at 1500 hp,if you can stand the extra frt end weight go with the lsx block,it will def be cheaper in the end,i also like the way they do the additional head bolts over the warhawk design
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01-29-2009, 02:34 PM
#11
From the many many builds I have read about especially on the old boosted lists I would say if you plan on running over 20psi then 6 bolt would likely be needed but certainly not for 12psi thats baby boost. Tuning of course is supposed to matter a lot more than simple amount of boost. Timing being likely the most important variable.Don't get greedy with timing.run a safe afr and should be no big problem. Also different turbos will put out different hp at same boost levels. Airflow is the true measure of power not boost.
That said running a nice big cube motor like a 427 should let you run lower boost than a smaller cube engine talking same turbo to keep the comparison meaningful.
One reason I went up to 408 from 346 to gaining more power off boost and more torque off boost. You won't be into boost that much on the street and certainly not for long.Unless you like jail! And potentially quicker spool up from the bigger cubes.
01-29-2009, 02:46 PM
#12
If $1500 seems like a big difference, wait till you see how much it is going to cost to get that block to where it is ready to make anywhere near 1000 HP....you are looking at probably $20K minimum by the time it is ready to fire up.....I guess it is tax return time though!
01-29-2009, 03:03 PM
#13
def warhawk over the lsx. not much experience with warhawk myself. but look at paul majors car. my experience with the lsx block cracked 3 cylinder walls at 1100rwhp (was not a tuning issue for those who criticize)
01-29-2009, 03:17 PM
#15
no there are not many. maybe we got one built on a friday
01-30-2009, 12:57 AM
#16
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Your kidding right? You think that cracked cylinder walls on a lsx block @ 1100rwhp is due to the block not being strong enough?Out of all the blocks out without question the lsx is going to be the strongest.Theres really no debate. I've heard more storys about sleeves dropping in warhawk motors than i can count.Hell i'm confidant with every factory ls series block to 1000hp with some main cap attention. Sounds like something goofy went on with your motor.
01-30-2009, 10:56 AM
#20
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I was in this same delima awhile back and i chose to go with the LSX block. After much studying on the subject the Lsx block and be punched all the way out to a 485 if someone wanted too i settled with just the 408. We put a set of custom arias pistons, oliver connecting road, callies crank list can go on and on and i am nowhere near the 20000 mark that was previously stated. Havent had it tuned yet but am guessing somewhere in the ball park of 1100 to the wheels seeing how my old set up of a slightly forged stock cube 6.0 done 937 and 1038 torque to the ground. I dont know all that much about the warhawk but i know the lsx block is a hell of a beast and the weight on the lsx is 225lb. Hopefully will have some numbers up in the near future on the new build.