Is it possible for my 410 to make 550rwhp with 10.9.1 compression? What do I need?
#1
Is it possible for my 410 to make 550rwhp with 10.9.1 compression? What do I need?
I see these sponsors making crazy power out of 346's as if they were strokers. So what can I change or do to make some crazy power out of my stroker? I think I am set for exhaust.... Kooks 1 7/8" race headers with dual cut outs
am I missing just the FAST 90mm TB intake and EWP? I am going with either A.S or GTP stage 3 LS6 heads with 2.08 1.60 valves and the cam in my sig......anyone have any sugestions?
am I missing just the FAST 90mm TB intake and EWP? I am going with either A.S or GTP stage 3 LS6 heads with 2.08 1.60 valves and the cam in my sig......anyone have any sugestions?
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lol.. just get on the c5r bandwagon. i've seen that 390ci+ motors need more heads than the standard LSX series head to make good power. all the strokers seem to choke if there's not a GOOD set of heads involved. take ARE's shop car (since it's really the only one dynoed i can think of) they're 422 made some sickly hp and Tq because it has some worked C5R's
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Originally Posted by Vents
lol.. just get on the c5r bandwagon. i've seen that 390ci+ motors need more heads than the standard LSX series head to make good power. all the strokers seem to choke if there's not a GOOD set of heads involved. take ARE's shop car (since it's really the only one dynoed i can think of) they're 422 made some sickly hp and Tq because it has some worked C5R's
#7
I'm hoping we see some big numbers out of the 225 cc AFR heads that will wake up a lot of this big motors here. I hope an LSX/90mm intake with some hogged out AFRs on top might be good enough for some mid 500s out of these things. I guess time will tell, and it looks like April or so before the big AFRs hit the market.
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Originally Posted by JF WS6
So, based on these comments..... could it be said that beyond a certain displacement you will see very minimal returns? At what CID does everyone think that is (assuming a worked stage III LS6/LQ9 head?) I'm anxious for someone to put a stage III pair of the modified AFR heads on a super stroker and see how they do once they are released.
i actually typed a number to start with but i dont know how accurate my deductions would be, since it's just a shot in the dark. i'd think it would be safe to say that once you cross the 380-396CI range, you would be at the base of C5r territory. now, thats not to say that 422 ci setups arent making good power w/ some 330 cfm LS6/LQ9 heads, but based off of other c5r headed motors i've seen of similar CI, i think there is plenty more power to be had, with more head flow.
specific 387 Ci all bore motors come to mind making 500+ RWHP w/ 340 cfm LQ9 heads,
it would seem that 380 CFM or more would be ideal conditions for a 420+ ci motor to live under. you could expect close to 600 RW if not more. im sure that some of the FI folks could chime in here and extrapolate on this matter a tad bit better than i could. i think there's a formulia for CFM to HP somewhere.
i think this would be a great experiment for someone to conduct that has nothing better to do with their time. CI VS head flow = XX amount of HP potential.
Last edited by Vents; 01-30-2004 at 06:21 PM.
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Originally Posted by Vents
it would seem that 380 CFM or more would be ideal conditions for a 420+ ci motor to live under. you could expect close to 600 RW if not more. im sure that some of the FI folks could chime in here and extrapolate on this matter a tad bit better than i could. i think there's a formulia for CFM to HP somewhere.
i think this would be a great experiment for someone to conduct that has nothing better to do with their time. CI VS head flow = XX amount of HP potential.
i think this would be a great experiment for someone to conduct that has nothing better to do with their time. CI VS head flow = XX amount of HP potential.
Building a 420+ CID stroker just doesn't seem worth the expense at the present time considering the outputs of some of the allbores or even some of these stock displacement motors.
#11
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I think the LS1 responds to upgrades and going from 300 rwhp to 400rwhp or more with boltons is very achievable. But going from 400rwhp to 550rwhp in a stroker is harder because the gains become harder and harder to get above 500rwhp.
I made 475rwhp/505rwtq with an ARE 422ci iron block a few years ago, and it was probably about 500rwhp if I dynoed on radials and had a stock rearend in there. For me to find another 50rwhp from there would have meant a Meziere water pump, more work on my LS6 heads, and more camshaft. I was more like 11.75:1 too.
I made 475rwhp/505rwtq with an ARE 422ci iron block a few years ago, and it was probably about 500rwhp if I dynoed on radials and had a stock rearend in there. For me to find another 50rwhp from there would have meant a Meziere water pump, more work on my LS6 heads, and more camshaft. I was more like 11.75:1 too.
#12
Originally Posted by SDC
With the 410 I think you should be shooting for a torque number, not a hp number.
Well I am not going to waste my money on the Meziere or fast intake I will just try to make the best of what I have.
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This is very interesting to me as well as I have a 410 CI motor with 2001 LS1 heads that flowed 314@600.
My compression is 11.85:1 with these heads and that is why I didn't use a different head that produces better results.
I would like to see some high HP numbers from this motor however if my heads aren't good enough then I will acturally make less power then a couple heads and cam cars.
Makes me wonder why I spent so much money on a bottom end.
Then I realize the torque this puppy should make and I remember why I spent the $$$.
Those that are running 500 HP H/C cars are doing low to mid 400's torque. Then stick a 410 in the same car with the same quality heads and cam and you might not see a big HP gain but will see AT LEAST 50 more ft pounds of torque.
I hope that the fast intake and 90mm TB will help the big cube class make more power it sure has helped on the H/C cars. Also need to remember that cartek and LG the 2 H/C cars I have read making 500+ already had a 90mm and LSX intake.
I will be ordering mine soon.
My compression is 11.85:1 with these heads and that is why I didn't use a different head that produces better results.
I would like to see some high HP numbers from this motor however if my heads aren't good enough then I will acturally make less power then a couple heads and cam cars.
Makes me wonder why I spent so much money on a bottom end.
Then I realize the torque this puppy should make and I remember why I spent the $$$.
Those that are running 500 HP H/C cars are doing low to mid 400's torque. Then stick a 410 in the same car with the same quality heads and cam and you might not see a big HP gain but will see AT LEAST 50 more ft pounds of torque.
I hope that the fast intake and 90mm TB will help the big cube class make more power it sure has helped on the H/C cars. Also need to remember that cartek and LG the 2 H/C cars I have read making 500+ already had a 90mm and LSX intake.
I will be ordering mine soon.
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I hope that the fast intake and 90mm TB will help the big cube class make more power it sure has helped on the H/C cars. Also need to remember that cartek and LG the 2 H/C cars I have read making 500+ already had a 90mm and LSX intake.
I will be ordering mine soon
I will be ordering mine soon
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That'd be pretty hard to do with that low of compression. I'd say maybe with a big solid roller, custom intake, and some bigger headers (maybe 1 7/8 to 2) you'd probably do around 520-530rwhp, higher compression plays a big factor in getting HP out of these motors.
#18
Originally Posted by Linear Velocity
That'd be pretty hard to do with that low of compression. I'd say maybe with a big solid roller, custom intake, and some bigger headers (maybe 1 7/8 to 2) you'd probably do around 520-530rwhp, higher compression plays a big factor in getting HP out of these motors.
I am not talking about making 550rwhp through a cat back. I have Kooks race 1 7/8"-3" going to a QTP dual electric cutout y-pipe which will usually give about 10-20rwhp depending on how free flowing the car back is. I hoping for 530rwhp with the cutouts open with a six speed and a stock rear end
we'll see what happens hoping for next month to dyno/tune