How about these cam specs?
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no just some fun with #'s. Actually the first one i came up with was 260/260 .595/.595 112. Keep in mind this is for a larger cube motor. I was playing with #'s in desktop dyno just watching the graphs and the first set of cam specs actaully makes peak Hp around 6k and makes shitloads of torque across the board.
Originally Posted by Hitman#1
What the **** would you need a twenty-eight degree split between intake and exhaust for? Are you planning on spraying 500 hp with the stock exhaust manifolds in place? 
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I'm building a 414 and i have an F1 but I believe that there are way better cam designs out there that would take advantage of the cubes 
I want 500 hp and similar torque. So without the solid lift 60000 inch lift cams I'm expiramenting a little.
I want 500 hp and similar torque. So without the solid lift 60000 inch lift cams I'm expiramenting a little.
Originally Posted by Damian
Thats a LOT of split, but it might work. Lots of split does usually formulate to more TQ across the board, but 28 degrees damn ...I'd like to see it. What size motor?
...I'd like to see it. What size motor?No it doesn't. For the most part, your best torque cams are your straight-up grinds. Granted this is not etched in stone and I'm just talking about trends for most engines, not just LS1's. In the case of the LS1, they actually seem to favor a reverse split due to the great intake to exhaust flow ratio.
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Originally Posted by Taspeed
I'm building a 414 and i have an F1 but I believe that there are way better cam designs out there that would take advantage of the cubes I want 500 hp and similar torque. So without the solid lift 60000 inch lift cams I'm expiramenting a little.
I want 500 hp and similar torque. So without the solid lift 60000 inch lift cams I'm expiramenting a little.
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Originally Posted by Hitman#1
No it doesn't. For the most part, your best torque cams are your straight-up grinds. Granted this is not etched in stone and I'm just talking about trends for most engines, not just LS1's. In the case of the LS1, they actually seem to favor a reverse split due to the great intake to exhaust flow ratio.
Take a look at the LG, Cartek, and my cam for example. All standard splits, and make 410+ rwtq. How many reverse split cams are making 410 rwtq on stock cubes?
Josh
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I think a 232/260 will make about the same power as a 232/232 and will have about HALF the drivability. Pretty much a waste of overlap, IMO.
Put the Desktop Dyno down and slowly back away.
Put the Desktop Dyno down and slowly back away.
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My F1 was making 435 hp and 407 tq ...but you have a point not many reverse splits make that much torque. Generally speaking large cube motors like more duration. The problem is the Ls1's don't respond the same as a "typical" sbc would. However, based on the #'s that the general population are getting using the "off the shelf" cams everyone is selling I think maybe there are some specs out there that are a bit unorthodox to the general sbc community that might make big power in an ls1. Just a thought. Thus a reason for this post
...but you have a point not many reverse splits make that much torque. Generally speaking large cube motors like more duration. The problem is the Ls1's don't respond the same as a "typical" sbc would. However, based on the #'s that the general population are getting using the "off the shelf" cams everyone is selling I think maybe there are some specs out there that are a bit unorthodox to the general sbc community that might make big power in an ls1. Just a thought. Thus a reason for this post
Originally Posted by Damian
Reverse splits do NOT generate TQ like a standard split duration. They generate great HP figures.
Take a look at the LG, Cartek, and my cam for example. All standard splits, and make 410+ rwtq. How many reverse split cams are making 410 rwtq on stock cubes?
Josh
Take a look at the LG, Cartek, and my cam for example. All standard splits, and make 410+ rwtq. How many reverse split cams are making 410 rwtq on stock cubes?
Josh
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I would have to concur on that one...it just looked cool
Originally Posted by Colonel
I think a 232/260 will make about the same power as a 232/232 and will have about HALF the drivability. Pretty much a waste of overlap, IMO.
Put the Desktop Dyno down and slowly back away.
Put the Desktop Dyno down and slowly back away.
Originally Posted by Damian
Reverse splits do NOT generate TQ like a standard split duration. They generate great HP figures.
Take a look at the LG, Cartek, and my cam for example. All standard splits, and make 410+ rwtq. How many reverse split cams are making 410 rwtq on stock cubes?
Josh
Take a look at the LG, Cartek, and my cam for example. All standard splits, and make 410+ rwtq. How many reverse split cams are making 410 rwtq on stock cubes?
Josh
I personally think that for horsepower and torque, a straight-up grind is the way to go with these engines, provided your not going to spray a ton, or use a lot of boost. I'm going to be going with something akin to the G5 X??? precisely because I am going to spray over 200hp. If not, I would be using something like a 232-232 on a 108 LDA.
Now don't get all wrapped up on what I said about reverse splits. I'm not a big fan of reverse splits, as I am VERY old school and reverse splits go against my way of thinking. BUT, it seems like in a N/A application the LS1 is an engine that can get away with running these cams due to it's almost aftermarket flow characteristics and intake to exhaust ratio. I just saw a bit of a trend forming...
As I said before, I'm just making generalized statements here, and in no way am I quoting gospel.
Originally Posted by Hitman#1
Take a look at my post again. The only time I mentioned torque was when talking about a straight up cam.
I personally think that for horsepower and torque, a straight-up grind is the way to go with these engines, provided your not going to spray a ton, or use a lot of boost. I'm going to be going with something akin to the G5 X??? precisely because I am going to spray over 200hp. If not, I would be using something like a 232-232 on a 108 LDA.
Now don't get all wrapped up on what I said about reverse splits. I'm not a big fan of reverse splits, as I am VERY old school and reverse splits go against my way of thinking. BUT, it seems like in a N/A application the LS1 is an engine that can get away with running these cams due to it's almost aftermarket flow characteristics and intake to exhaust ratio. I just saw a bit of a trend forming...
As I said before, I'm just making generalized statements here, and in no way am I quoting gospel.
I personally think that for horsepower and torque, a straight-up grind is the way to go with these engines, provided your not going to spray a ton, or use a lot of boost. I'm going to be going with something akin to the G5 X??? precisely because I am going to spray over 200hp. If not, I would be using something like a 232-232 on a 108 LDA.
Now don't get all wrapped up on what I said about reverse splits. I'm not a big fan of reverse splits, as I am VERY old school and reverse splits go against my way of thinking. BUT, it seems like in a N/A application the LS1 is an engine that can get away with running these cams due to it's almost aftermarket flow characteristics and intake to exhaust ratio. I just saw a bit of a trend forming...
As I said before, I'm just making generalized statements here, and in no way am I quoting gospel.
Single's and standard splits are the way to go IMO. Old school is the best school
Josh
Yeah, I've seen cams like that.
When I play with DD2K.
Like da Colonel said, put down the DD and slowly back away...
Keep in mind. If you're dealing with flow numbers from a standard flowbench, they won't work with DD2K (in my opinion). You need to have the full intake and throttle body bolted on to the head - for the 'real' number.
Try this. You can sort of simulate an intake by multiplying your higher lift numbers by a lower percentage. For example - .2" = .95, .3" = .93, .4" = .90, .5" = .86, .6" = .81 - and then run your iterator. You'll find that the cam turns out completely different due to the changed flow numbers.
I went from a huge conventional split (something like a 222/244) to a reverse split (242/239) in DD2K when I did this.
DD2K is a good way to just kill some time, but that's about all...
-Andrew
When I play with DD2K.
Like da Colonel said, put down the DD and slowly back away...
Keep in mind. If you're dealing with flow numbers from a standard flowbench, they won't work with DD2K (in my opinion). You need to have the full intake and throttle body bolted on to the head - for the 'real' number.
Try this. You can sort of simulate an intake by multiplying your higher lift numbers by a lower percentage. For example - .2" = .95, .3" = .93, .4" = .90, .5" = .86, .6" = .81 - and then run your iterator. You'll find that the cam turns out completely different due to the changed flow numbers.
I went from a huge conventional split (something like a 222/244) to a reverse split (242/239) in DD2K when I did this.
DD2K is a good way to just kill some time, but that's about all...
-Andrew