Random LS7 thoughts?
02-26-2007, 03:45 PM
#1
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Random LS7 thoughts? Ok, any thoughts on HP and TQ with this set-up
LS7 block 11.25:1 CR
Eagle 4340 4.0" stroke crank
Wiseco custom pistons, Callies H beam rods
LS7 match ported intake and 90mm TB
LS7 heads, stock valves with modified valve components
Ported exhaust
Harland Sharp modified rockers
Super Comp 1.75" Hooker headers to Flowmaster 50's
LS7 injectors, coils
235/241 593/602 114
4L60 to a 3.73 posi, stall?
wet sump set-up
LS7 block 11.25:1 CR
Eagle 4340 4.0" stroke crank
Wiseco custom pistons, Callies H beam rods
LS7 match ported intake and 90mm TB
LS7 heads, stock valves with modified valve components
Ported exhaust
Harland Sharp modified rockers
Super Comp 1.75" Hooker headers to Flowmaster 50's
LS7 injectors, coils
235/241 593/602 114
4L60 to a 3.73 posi, stall?
wet sump set-up
Last edited by ss dave; 02-26-2007 at 04:40 PM.
02-27-2007, 08:13 AM
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Thought about that, but this a conversion. A LME built power plant that's being shoved into a 1st gen. Hooker makes the swap headers to fit at a resonable price, got em Jet Hot coated so I guess I'm stuck with them. That was one of the reasons Bryan at LME gave for porting the exhaust, to compensate for the size of the tubes.
Any thoughts on the cam of today and tomorrow? what would you change? I wanted this to be a simple N/A engine with low end TQ and ample power
Any thoughts on the cam of today and tomorrow? what would you change? I wanted this to be a simple N/A engine with low end TQ and ample power
Last edited by ss dave; 02-27-2007 at 08:39 AM.
03-01-2007, 11:37 PM
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Originally Posted by briannutter
you might want to consider a 1 7/8 header if you might be camming it up in the future.
Last edited by Chicago Crew UnderBoss; 03-04-2007 at 01:53 PM.
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03-02-2007, 08:53 AM
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Thanks all for the nice comments. I'm like a kid on Christmas morning, the motor is being shipped today, should get it on Monday. If everything goes well (fingers crossed) then I should be poundin pavement in about a month. I thought about a Procharger on my 383 carbed motor, but with this rendering of my project I decided that I would keep it simple, a N/A "no replacement for displacement" power plant.
03-02-2007, 11:54 AM
#9
Originally Posted by ss dave
Ok, any thoughts on HP and TQ with this set-up
LS7 block 11.25:1 CR
Eagle 4340 4.0" stroke crank
Wiseco custom pistons, Callies H beam rods
LS7 match ported intake and 90mm TB
LS7 heads, stock valves with modified valve components
Ported exhaust
Harland Sharp modified rockers
Super Comp 1.75" Hooker headers to Flowmaster 50's
LS7 injectors, coils
235/241 593/602 114
4L60 to a 3.73 posi, stall?
wet sump set-up
LS7 block 11.25:1 CR
Eagle 4340 4.0" stroke crank
Wiseco custom pistons, Callies H beam rods
LS7 match ported intake and 90mm TB
LS7 heads, stock valves with modified valve components
Ported exhaust
Harland Sharp modified rockers
Super Comp 1.75" Hooker headers to Flowmaster 50's
LS7 injectors, coils
235/241 593/602 114
4L60 to a 3.73 posi, stall?
wet sump set-up
Why are you changing rocker arms?
03-02-2007, 01:49 PM
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I was hoping Jason would comment. I was told the needle bearings may have a tendency to fail, with the mod it should prevent that. Apparently with offset rockers it stresses the configuration and possibly break the bearings. I have no personal experience with this so I must refer to the builders and experts. I wanted the motor built with the desire for durability, longevity and reliability. I know of the quality of Katech so any comments are appreciated.
03-03-2007, 08:23 PM
#11
Hey there SSDave.......my 427 is so close to yours it's not even funny!My cam is a 234/242 on a 114 LSA and I'm running a little more compression(11.6)but other then that it's about the same.I have the Wiseco's also.I went with the rocker mod also to be on the safe side.I want some dependability.I have yet to get it tuned yet and I only have a few miles on it so not sure on any numbers yet.It seems to have a little snort though.I'm going to use this cam for awhile till everyone gets these things figured out, then maybe go big!Later Traver
03-03-2007, 08:26 PM
#12
Originally Posted by ss dave
I was hoping Jason would comment. I was told the needle bearings may have a tendency to fail, with the mod it should prevent that. Apparently with offset rockers it stresses the configuration and possibly break the bearings. I have no personal experience with this so I must refer to the builders and experts. I wanted the motor built with the desire for durability, longevity and reliability. I know of the quality of Katech so any comments are appreciated.