What will this do for Horsepower increase..........
08-09-2013, 11:02 PM
#1
What will this do for Horsepower increase.......... My forged iron 390ci. Right now it has my old LS1 ported heads that only flow 304cfm. Along with my LS6 intake. Stock ported TB.
If I swap those three with L92 ported heads that flow 350+cfm and a ported L76 intake and 90mm TB.......and a new cam to match.
What do you think I'll pick up for RWHP....?
It dynoed a little over 400 RWHP now. It's only 10.8:1 compression because its waiting for a turbo kit.
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If I swap those three with L92 ported heads that flow 350+cfm and a ported L76 intake and 90mm TB.......and a new cam to match.
What do you think I'll pick up for RWHP....?
It dynoed a little over 400 RWHP now. It's only 10.8:1 compression because its waiting for a turbo kit.
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08-11-2013, 12:36 PM
#4
You think that'll only be good for about 25 HP increase......?
What about the 1.5 HP increase per cfm increase. Just the heads alone should provide about 50 x 1.5 = 75 HP.........right?
Then with the supporting better intake and TB....maybe 10-15 more.???
People were getting 500 RWHP back in 2001-2002 with STOCK CUBES and head/cam kits........how were they doing it?
Like "Tomtheroofer" running 10 second 1/4 miles and over 500 RWHP......
Morgan Motorsports.....500 RWHP with their "500 Aggressor Head/Cam kit". Stock cubed engines.
HOW....?
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08-19-2013, 07:28 AM
#10
What about the 1.5 HP increase per cfm increase. Just the heads alone should provide about 50 x 1.5 = 75 HP.........right?
We don't know the cam you have now and the cam that you will go with the new heads to really say, but I would expect in the mid 400s at the wheels.
08-30-2013, 01:43 PM
#12
Staging Lane
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You are not going to see 75rwhp just from going from ported 241s to stock LS3s. And certainly not on a less than ideal 4.030 bore.
We don't know the cam you have now and the cam that you will go with the new heads to really say, but I would expect in the mid 400s at the wheels.
We don't know the cam you have now and the cam that you will go with the new heads to really say, but I would expect in the mid 400s at the wheels.
Build thread here: https://ls1tech.com/forums/conversio...r-ls-drop.html