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Fast and MSD will be very flat up top. I ran into this with my LS3 from 66-7600 using the mid runners. I gained 46RWHP by swapping on the X1 intake (same day same dyno no tune change) This motor will likely perform much better with the larger plenum intake. Good luck and can't wait to see results.
I'm going to have some big piston speeds with the RPM I'm shooting for, but we calculated the mid-trumpet runner length to come in around just under 8.5" total length....... the short-trumpet around 7".....the long-trumpet close to 9.5". The original calculation showed we wanted right around 7.5 IIRC.
Plenum volume should be spot on.....just need a throttle body large enough to flow the required volume to feed her.
I'm going to have some big piston speeds with the RPM I'm shooting for, but we calculated the mid-trumpet runner length to come in around just under 8.5" total length....... the short-trumpet around 7".....the long-trumpet close to 9.5". The original calculation showed we wanted right around 7.5 IIRC.
Plenum volume should be spot on.....just need a throttle body large enough to flow the required volume to feed her.
We shall see what the dyno says
The proper throttle body would be 2 of them LOL That is my next goal.
The proper throttle body would be 2 of them LOL That is my next goal.
I have a few friends with large displacement LS's in Corvette chassis that have gone the dual 90mm way.......both of them are turning more RPM's than I'm planning and make more peak power than I'm expecting.
Ryne Cunnigham's 477 tall deck ran a custom Thompsen billet dual throttle body intake and spun his up near 8K.
This old thread about a LME build also claimed well over 700 RWHP with a dual thottle body setup ..... https://ls1tech.com/forums/texas-mem...aspirated.html
I'm not a full committed drag car, so if I can keep from going into a vacuum at WOT in my operating range with a 108-112, that's my target.
The short-trumpet 7" setup would have me making peak power in the 7500 range, but we will see what the torque numbers look like and what the MAP readings look like.
New Comp LS tall valve covers with oil misting system for valve springs....look real nice !!!!
I'm planning on plumbing the oil feeds from the new LSXConcepts valley cover I purchased which has a port for feeding oil to external accessories.....I'm having it anodized red to match the other pieces on the motor.
Wait a min... How did you get your hands on the new FAST intake?
LSX HR
Unfortunately, I can't acknowledge or discuss anything on items I may or may not have in my possession that are not available to the public ....yet.
You'll need to read between the lines, and /or accept on blind faith that I'm being as forth coming as much as I can, and that you'll start seeing results and possible availability on several so called "vaporware" products soon.
I don't spend a lot of time on this board........many of the membership here know me from another board that I participate on, if that matters at all.
I'll share more when I can
Unfortunately, I can't acknowledge or discuss anything on items I may or may not have in my possession that are not available to the public ....yet.
You'll need to read between the lines, and /or accept on blind faith that I'm being as forth coming as much as I can, and that you'll start seeing results and possible availability on several so called "vaporware" products soon.
I don't spend a lot of time on this board........many of the membership here know me from another board that I participate on, if that matters at all.
I'll share more when I can
I can respect that let's just say I have a good eye. Looking forward to the end result man. So Jelly lol
Holly Mother of Lope! Really looking forward to your intake comparison!
Yes, she should sound pretty good LOL
With my K501 cammed LS7 making 575 uncorrected RWHP at my track's altitude (AZ) on a stock T56 and 3.42 gear, it went 10.40@135 on a rather lazy (for me) 1.55 60'.
It had a 10.2X or better in it if I would have had good air (sub 2000 for me), and my usual 1.50 60' short time.
With the new 468 and 3.90's, I think she's going to surprise a number of guys lined up across from me.
04-15-2019, 09:19 PM
