370/Ls3 F1a dyno results
04-16-2015, 08:03 AM
#21
I too have been looking for a set of heads in case these lift. TFS, TEA are two brands that have great reviews
BTW that K1 is a great choice for the crankshaft.
04-16-2015, 09:30 AM
#23
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yeah you defiantly didnt help your cause. You might have just received a weak set Or your cylinder pressures might be through the roof. As im sure you know the LSA heads are a good cheap option with a thicker deck and superior material. Im not sure about the chamber size though.
I too have been looking for a set of heads in case these lift. TFS, TEA are two brands that have great reviews
BTW that K1 is a great choice for the crankshaft.
I too have been looking for a set of heads in case these lift. TFS, TEA are two brands that have great reviews
BTW that K1 is a great choice for the crankshaft.
04-16-2015, 12:08 PM
#27
Greg,
Brodix has a 15* .750" deck LS3 head out that looks nice, but I have no experience with it.
The TFS LS3 12* heads are only a .625" (5/8") thick deck which is better than what you have, but I'd want something that was .750"(3/4") for what you'll spend on a set of aftermarket heads.
You could also do a small bore LS7 head, but you'd need a LS7 intake manifold and rockers. Chris Frank can do small bore programs on any of his aftermarket castings that he uses as well for no added charge.
As a mention, you could possibly try a set of LSA heads like I run. I haven't pushed any water so far at 1050+ rwhp and as you know that's through a glide and on 275/60 radials and not a 6 speed with 17" "street" tires like you have. Every dyno is different, but since we've both dyno'd on the same rollers, and my car has been 137.50@3230 lbs. I'd say they're very accurate numbers, if not on the low end looking at calculators for MPH and weight.
Also you have to remember that your blower is parasitic in that it robs power to make power. I would imagine that you're well upwards of 1100hp at the crank, and most likely approaching 1150hp+. Definitely taxing those stock castings especially being milled as much as they are.
I personally weighed my LSA heads and a set of LS3 heads. The LSA heads were IIRC almost 3 pounds heavier per casting. It is definitely a denser material, but I've been told that the deck is no thicker on a LSA head than it is on a LS3, L92, L76 etc. Only difference is the casting process.
Louis@LG has cut a lot of these heads open and he has probably measured the deck thickness.
Brodix has a 15* .750" deck LS3 head out that looks nice, but I have no experience with it.
The TFS LS3 12* heads are only a .625" (5/8") thick deck which is better than what you have, but I'd want something that was .750"(3/4") for what you'll spend on a set of aftermarket heads.
You could also do a small bore LS7 head, but you'd need a LS7 intake manifold and rockers. Chris Frank can do small bore programs on any of his aftermarket castings that he uses as well for no added charge.
As a mention, you could possibly try a set of LSA heads like I run. I haven't pushed any water so far at 1050+ rwhp and as you know that's through a glide and on 275/60 radials and not a 6 speed with 17" "street" tires like you have. Every dyno is different, but since we've both dyno'd on the same rollers, and my car has been 137.50@3230 lbs. I'd say they're very accurate numbers, if not on the low end looking at calculators for MPH and weight.
Also you have to remember that your blower is parasitic in that it robs power to make power. I would imagine that you're well upwards of 1100hp at the crank, and most likely approaching 1150hp+. Definitely taxing those stock castings especially being milled as much as they are.
I personally weighed my LSA heads and a set of LS3 heads. The LSA heads were IIRC almost 3 pounds heavier per casting. It is definitely a denser material, but I've been told that the deck is no thicker on a LSA head than it is on a LS3, L92, L76 etc. Only difference is the casting process.
Louis@LG has cut a lot of these heads open and he has probably measured the deck thickness.
04-16-2015, 12:53 PM
#28
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Greg,
Brodix has a 15* .750" deck LS3 head out that looks nice, but I have no experience with it.
The TFS LS3 12* heads are only a .625" (5/8") thick deck which is better than what you have, but I'd want something that was .750"(3/4") for what you'll spend on a set of aftermarket heads.
You could also do a small bore LS7 head, but you'd need a LS7 intake manifold and rockers. Chris Frank can do small bore programs on any of his aftermarket castings that he uses as well for no added charge.
As a mention, you could possibly try a set of LSA heads like I run. I haven't pushed any water so far at 1050+ rwhp and as you know that's through a glide and on 275/60 radials and not a 6 speed with 17" "street" tires like you have. Every dyno is different, but since we've both dyno'd on the same rollers, and my car has been 137.50@3230 lbs. I'd say they're very accurate numbers, if not on the low end looking at calculators for MPH and weight.
Also you have to remember that your blower is parasitic in that it robs power to make power. I would imagine that you're well upwards of 1100hp at the crank, and most likely approaching 1150hp+. Definitely taxing those stock castings especially being milled as much as they are.
I personally weighed my LSA heads and a set of LS3 heads. The LSA heads were IIRC almost 3 pounds heavier per casting. It is definitely a denser material, but I've been told that the deck is no thicker on a LSA head than it is on a LS3, L92, L76 etc. Only difference is the casting process.
Louis@LG has cut a lot of these heads open and he has probably measured the deck thickness.
Brodix has a 15* .750" deck LS3 head out that looks nice, but I have no experience with it.
The TFS LS3 12* heads are only a .625" (5/8") thick deck which is better than what you have, but I'd want something that was .750"(3/4") for what you'll spend on a set of aftermarket heads.
You could also do a small bore LS7 head, but you'd need a LS7 intake manifold and rockers. Chris Frank can do small bore programs on any of his aftermarket castings that he uses as well for no added charge.
As a mention, you could possibly try a set of LSA heads like I run. I haven't pushed any water so far at 1050+ rwhp and as you know that's through a glide and on 275/60 radials and not a 6 speed with 17" "street" tires like you have. Every dyno is different, but since we've both dyno'd on the same rollers, and my car has been 137.50@3230 lbs. I'd say they're very accurate numbers, if not on the low end looking at calculators for MPH and weight.
Also you have to remember that your blower is parasitic in that it robs power to make power. I would imagine that you're well upwards of 1100hp at the crank, and most likely approaching 1150hp+. Definitely taxing those stock castings especially being milled as much as they are.
I personally weighed my LSA heads and a set of LS3 heads. The LSA heads were IIRC almost 3 pounds heavier per casting. It is definitely a denser material, but I've been told that the deck is no thicker on a LSA head than it is on a LS3, L92, L76 etc. Only difference is the casting process.
Louis@LG has cut a lot of these heads open and he has probably measured the deck thickness.
04-16-2015, 02:58 PM
#29
Greg,
Brodix has a 15* .750" deck LS3 head out that looks nice, but I have no experience with it.
The TFS LS3 12* heads are only a .625" (5/8") thick deck which is better than what you have, but I'd want something that was .750"(3/4") for what you'll spend on a set of aftermarket heads.
You could also do a small bore LS7 head, but you'd need a LS7 intake manifold and rockers. Chris Frank can do small bore programs on any of his aftermarket castings that he uses as well for no added charge.
As a mention, you could possibly try a set of LSA heads like I run. I haven't pushed any water so far at 1050+ rwhp and as you know that's through a glide and on 275/60 radials and not a 6 speed with 17" "street" tires like you have. Every dyno is different, but since we've both dyno'd on the same rollers, and my car has been 137.50@3230 lbs. I'd say they're very accurate numbers, if not on the low end looking at calculators for MPH and weight.
Also you have to remember that your blower is parasitic in that it robs power to make power. I would imagine that you're well upwards of 1100hp at the crank, and most likely approaching 1150hp+. Definitely taxing those stock castings especially being milled as much as they are.
I personally weighed my LSA heads and a set of LS3 heads. The LSA heads were IIRC almost 3 pounds heavier per casting. It is definitely a denser material, but I've been told that the deck is no thicker on a LSA head than it is on a LS3, L92, L76 etc. Only difference is the casting process.
Louis@LG has cut a lot of these heads open and he has probably measured the deck thickness.
Brodix has a 15* .750" deck LS3 head out that looks nice, but I have no experience with it.
The TFS LS3 12* heads are only a .625" (5/8") thick deck which is better than what you have, but I'd want something that was .750"(3/4") for what you'll spend on a set of aftermarket heads.
You could also do a small bore LS7 head, but you'd need a LS7 intake manifold and rockers. Chris Frank can do small bore programs on any of his aftermarket castings that he uses as well for no added charge.
As a mention, you could possibly try a set of LSA heads like I run. I haven't pushed any water so far at 1050+ rwhp and as you know that's through a glide and on 275/60 radials and not a 6 speed with 17" "street" tires like you have. Every dyno is different, but since we've both dyno'd on the same rollers, and my car has been 137.50@3230 lbs. I'd say they're very accurate numbers, if not on the low end looking at calculators for MPH and weight.
Also you have to remember that your blower is parasitic in that it robs power to make power. I would imagine that you're well upwards of 1100hp at the crank, and most likely approaching 1150hp+. Definitely taxing those stock castings especially being milled as much as they are.
I personally weighed my LSA heads and a set of LS3 heads. The LSA heads were IIRC almost 3 pounds heavier per casting. It is definitely a denser material, but I've been told that the deck is no thicker on a LSA head than it is on a LS3, L92, L76 etc. Only difference is the casting process.
Louis@LG has cut a lot of these heads open and he has probably measured the deck thickness.
04-16-2015, 05:17 PM
#30
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My SBE LS6 just let go and am doing something similar.
LS2 Block
K1 Stock Stroke Crank
Compstar Rods
Weisco -3.2 Pistons
Novi 2200 Oil Fed
I was lucky enough my TFS as Cast 220s survived. I will be keeping them but will be getting worked over by Brian Tooley. I was pushing about 24 psi and never pushed water.
LS2 Block
K1 Stock Stroke Crank
Compstar Rods
Weisco -3.2 Pistons
Novi 2200 Oil Fed
I was lucky enough my TFS as Cast 220s survived. I will be keeping them but will be getting worked over by Brian Tooley. I was pushing about 24 psi and never pushed water.
04-16-2015, 10:17 PM
#31
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My SBE LS6 just let go and am doing something similar.
LS2 Block
K1 Stock Stroke Crank
Compstar Rods
Weisco -3.2 Pistons
Novi 2200 Oil Fed
I was lucky enough my TFS as Cast 220s survived. I will be keeping them but will be getting worked over by Brian Tooley. I was pushing about 24 psi and never pushed water.
LS2 Block
K1 Stock Stroke Crank
Compstar Rods
Weisco -3.2 Pistons
Novi 2200 Oil Fed
I was lucky enough my TFS as Cast 220s survived. I will be keeping them but will be getting worked over by Brian Tooley. I was pushing about 24 psi and never pushed water.
04-17-2015, 07:47 AM
#34
For being no thicker, and the weight comparison I did showing that the LSA weighs 3 more pounds is proof of how much denser the LSA casting is from the rotocast process.
04-17-2015, 08:17 AM
#35
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i have a buddy that's doing a F1x on a LS3 416 with some TFS LS3 heads that Brain Tooley prepped. He will be using the ARP CA head studs with a 8"/4" pulley combo. I will keep you guys updated to see how it does.
04-18-2015, 07:49 PM
#36
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Probably flexed the crank and took out the #4 main.... Compstar cranks and blowers don't mix...
Sucks man, you were making killer power.
Make sure to get a dragonslayer or Lunati signature series crank for the rebuild.
Sucks man, you were making killer power.
Make sure to get a dragonslayer or Lunati signature series crank for the rebuild.