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Has anybody heard of these? I saw them in Chevy High Performance magazine but they they might be to big for a stock bore LS2/LS3. Does anybody think that they will work/produce big numbers on stock bore cars? Also do you think they would be good on heavily modded LS2's (G5X3 cam or bigger, Ported FAST, etc,etc)
Has anybody heard of these? I saw them in Chevy High Performance magazine but they they might be to big for a stock bore LS2/LS3. Does anybody think that they will work/produce big numbers on stock bore cars? Also do you think they would be good on heavily modded LS2's (G5X3 cam or bigger, Ported FAST, etc,etc)
So many people think runner size is the end of the discussion with heads. How many LS2 with LS3 heads and now the LS3 makes awesome power with an intake runner that is 260cc. Most of the time the bigger runners produce more top end at the expense of the low end. The fastest cars have the smaller runners....or the LS3 heads.
I was in a car with the 215's and a 232xer cam. It was fast. It was also a LS6 in a C5. The cam you are talking about is a bit bigger but I think the 215's are a great match for the cam. AFR 205 and the X3 did 495 rwhp. I have seen box stock LS3 heads make 490 with that same cam on an LS2. Think about what you want to do.
So many people think runner size is the end of the discussion with heads. How many LS2 with LS3 heads and now the LS3 makes awesome power with an intake runner that is 260cc. Most of the time the bigger runners produce more top end at the expense of the low end. The fastest cars have the smaller runners....or the LS3 heads.
I was in a car with the 215's and a 232xer cam. It was fast. It was also a LS6 in a C5. The cam you are talking about is a bit bigger but I think the 215's are a great match for the cam. AFR 205 and the X3 did 495 rwhp. I have seen box stock LS3 heads make 490 with that same cam on an LS2. Think about what you want to do.
Hey spin I plan on eventually making it a supercharged 408 do you think it's worth it to get these now and just live with the loss of the low end until then. Also do you think these heads will make more power from 4,000+ RPM than other heads. I plan on bumping ip the compression with a thinner head gasket when I do my heads also.
So many people think runner size is the end of the discussion with heads. How many LS2 with LS3 heads and now the LS3 makes awesome power with an intake runner that is 260cc. Most of the time the bigger runners produce more top end at the expense of the low end. The fastest cars have the smaller runners....or the LS3 heads.
I was in a car with the 215's and a 232xer cam. It was fast. It was also a LS6 in a C5. The cam you are talking about is a bit bigger but I think the 215's are a great match for the cam. AFR 205 and the X3 did 495 rwhp. I have seen box stock LS3 heads make 490 with that same cam on an LS2. Think about what you want to do.
It really depends on your use. Higher top end may be better if you have an extreme amount of power. Especially for racing.
all pro heads - > google "all pro heads" makes their "LSW Hurricane" heads
and et performance - > google "et heads" makes their "LS7 41 ETP" heads
both of those would outflow and out perform anything from trickflow and cost less installed due to less/no machining work
there are a lot of other head companies such as PRC that ports heads for nice effect
and builders like LPE and callaway port heads
but for true aftermarket heads that were MADE, not some ported core, there are only so many possibilities
et heads also makes a "canted valve" head that would be hard to beat but at 3x the cost
also, if you're into more exotic stuff, mast motorsports makes VVT (variable valve timing) GEN-IV engines, think of honda vtec for your LS7, e.g. smooth idle and hot cam high end performance and sound
also, have you ever been on the ls1tech.com forums?
Hey spin I plan on eventually making it a supercharged 408 do you think it's worth it to get these now and just live with the loss of the low end until then. Also do you think these heads will make more power from 4,000+ RPM than other heads. I plan on bumping ip the compression with a thinner head gasket when I do my heads also.
My LS7X heads are heads for the LS7 motor 4.125” bore. I don’t have a scanner or I would put up the flow sheet. I got 322cfm @ 0.400 and 398cfm @ 0.600, I’m using a comp 918 dual spring, seat 162 lbs, open 404 lbs, rate 500. My heads are going to be used on my WarHawk APS twin turbo Z06 car. Motor is just getting done but still waiting on the kit.
Crower made custom shaft rockers for this motor for me also. Look great on the heads and should be coming out on the market soon. Just like the Jessels in the way they go on the heads.