Ls3 Small Bore Heads for Ls1 Engines
02-27-2013, 11:03 AM
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Ls3 Small Bore Heads for Ls1 Engines We are proud to introduce our BSP Small Bore LS3 cylinder heads for LS1/LS6/LS2 engines!
Ballistic Speed Parts LS3 Small Bore cylinder heads are a direct fit to your stock bore LS1 or LS6 engine. We’ve spent over 2 years developing the ultimate cylinder heads for LS1/LS6/LS2 Engines using GM’s outstanding LS3 cylinder head as our platform. We are proud to offer our heads in 2 Stages that will allow you to bolt on up to 55HP.
Our cylinder heads also feature high quality, race proven, stainless steel intake and exhaust valves from Ferrea Racing Components.
Stage 1 (As Cast):
• 326 cfm of airflow
• Over 48HP Gain! (On stock cube LS1 346)
• Intake Port Volume: 255cc
Stage 2 (CNC Ported):
• 350 cfm of airflow
• Over 55HP Gain! (On stock cube LS1 346)
• Intake Port Volume: 270cc
Flow Sheets and Info: http://ballisticspeedparts.com/shop/...6-ls2-engines/
Ballistic Speed Parts LS3 Small Bore cylinder heads are a direct fit to your stock bore LS1 or LS6 engine. We’ve spent over 2 years developing the ultimate cylinder heads for LS1/LS6/LS2 Engines using GM’s outstanding LS3 cylinder head as our platform. We are proud to offer our heads in 2 Stages that will allow you to bolt on up to 55HP.
Our cylinder heads also feature high quality, race proven, stainless steel intake and exhaust valves from Ferrea Racing Components.
Stage 1 (As Cast):
• 326 cfm of airflow
• Over 48HP Gain! (On stock cube LS1 346)
• Intake Port Volume: 255cc
Stage 2 (CNC Ported):
• 350 cfm of airflow
• Over 55HP Gain! (On stock cube LS1 346)
• Intake Port Volume: 270cc
Flow Sheets and Info: http://ballisticspeedparts.com/shop/...6-ls2-engines/
Last edited by Ryan@BallisticSpeedParts; 07-17-2013 at 02:08 PM.
02-27-2013, 11:19 AM
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Our 383 Ls1 with our Stage 2 Ls3 Heads
STD: 530hp/470tq
- Factory Ls3 Intake (w/ minor cleanup)
- Full Exhaust
STD: 530hp/470tq
Last edited by Ryan@BallisticSpeedParts; 03-05-2013 at 07:15 PM.
04-17-2013, 08:05 PM
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Figured I share this link here on some good discussion we've been having about our Ls3 Small Bore Heads in the Dyno section.
https://ls1tech.com/forums/dynamomet...test-mule.html
https://ls1tech.com/forums/dynamomet...test-mule.html
06-25-2013, 07:32 PM
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Great results just provided by a happy customer and fellow Ls1Tech member, 45 HP gain...only using a 224/230 cam and stock LS7 Exhaust Manifolds!
https://ls1tech.com/forums/dynamomet...-new-post.html
https://ls1tech.com/forums/dynamomet...-new-post.html
Got the results in.
They were just as advertised and they picked up 45 rwhp and 35 rwtq over my 241 heads and ls6 intake manifold. I am pretty happy with that considering they are just the as cast versions. This was performed on the same dyno, so I know the gain is true. Compression ratio was the same before/after, so the gain came from flow.
What is puzzling is why my numbers are so low though. Cam only with the 241s, I only made 340. Adding the ls3 heads/intake pumped me up to 385.
I am going to get to the bottom of it. The bottom end just seems too healthy to be spitting out poor numbers. It revs smooth and does not burn oil. I think it is either the cam is ground wrong, or my torque tube and rear are eating the power. My rear whines like crazy and my torque tube's bearings are shot.
I am going to remedy all 3 and see if I can get back on the dyno. I am putting in an AI 230/238 cam now.
But the important part is that the heads gained me 45 rwhp, so money well spent in that regard! In my experience, that is pretty much what any head swap is going to gain you anyway. I have seen anywhere between 40-50ish rwhp over stock 241s when swapping heads on an ls1, so these definitely work. You may see 65+ with ported cathedrals and a fast, but that comes at a greater cost. These are a good budget option.
They were just as advertised and they picked up 45 rwhp and 35 rwtq over my 241 heads and ls6 intake manifold. I am pretty happy with that considering they are just the as cast versions. This was performed on the same dyno, so I know the gain is true. Compression ratio was the same before/after, so the gain came from flow.
What is puzzling is why my numbers are so low though. Cam only with the 241s, I only made 340. Adding the ls3 heads/intake pumped me up to 385.
I am going to get to the bottom of it. The bottom end just seems too healthy to be spitting out poor numbers. It revs smooth and does not burn oil. I think it is either the cam is ground wrong, or my torque tube and rear are eating the power. My rear whines like crazy and my torque tube's bearings are shot.
I am going to remedy all 3 and see if I can get back on the dyno. I am putting in an AI 230/238 cam now.
But the important part is that the heads gained me 45 rwhp, so money well spent in that regard! In my experience, that is pretty much what any head swap is going to gain you anyway. I have seen anywhere between 40-50ish rwhp over stock 241s when swapping heads on an ls1, so these definitely work. You may see 65+ with ported cathedrals and a fast, but that comes at a greater cost. These are a good budget option.
