OK Eric what happens when you put a ported MSD on this goes to 800 hp? I know on these the manifold is huge part of equation. Amazing what is done here with some ported TFS heads. Some of us actually need to see out the windshield and I think on my C6 Corvette the air cleaner on this set up would actually be taller than the roof of the car. I know this is a race version here but I guess what would this be if we tamed it down for a street friendly version? On the vacuum pump, I see the tube going to the passenger side valve cover do you need any baffling there or since on the front side you are OK? I was looking at something similar for mine. Amazing NA numbers here.
Two things happen when you put the long runner manifold on. Your peak power will go down, and where you make your peak power will also go down in the rpm range. I don't know the runner length on the msd, so I couldn't tell you how much or how far. You absolutely need baffling in the valve cover, or moroso makes a vacuum pump specific fitting if you don't have baffling. This cover has a baffle inside. These heads are basically how the come from trickflow with the exception of the throat work that I did.
I see Clearly now the Rain is Gone, no Obstacles in my way. It's gonna Be a Bright 🌞 Shinny Day & a Bowl Job.
Said this yrs ago, another guy on YB had bowl/throat work done and it got that head around 408 cfm I believe.
This may be the TFS Head ER posted about 1 to 2 months ago. It's BM'ed
Thanks Eric. Yeah, noticed no CCW and was kinda surprised since a high level build. Lot's of non CCW LS cranks getting pushed hard in to the mid 4s without issue albeit shorter stroke. Let us know how the mains look when you get it back for freshening,
Thanks Eric. Yeah, noticed no CCW and was kinda surprised since a high level build. Lot's of non CCW LS cranks getting pushed hard in to the mid 4s without issue albeit shorter stroke. Let us know how the mains look when you get it back for freshening,
Everything will be just fine with this deal. The CCW is preferred, but it's not the end all be all. Myself along with many other people have built lots of engines without the CCWs and they last just fine. The idea is to get a good quality crankshaft (with the counterweights in the correct positions), and have it properly balanced. There are even some less desirable CCW crankshafts on the market right now.
Two things happen when you put the long runner manifold on. Your peak power will go down, and where you make your peak power will also go down in the rpm range. I don't know the runner length on the msd, so I couldn't tell you how much or how far. You absolutely need baffling in the valve cover, or moroso makes a vacuum pump specific fitting if you don't have baffling. This cover has a baffle inside. These heads are basically how the come from trickflow with the exception of the throat work that I did.
Ok, so throw my crossram long runner intake on there n lets see what she does. Than send your hourly bill to Diamond for makn us wait forever. Tell em we were bored n got to messing around with intake mani s for the forums.
Crazy thing about all this is a Thought that just came to me about All this...
🤔 Go do the Math to Self on the Entire Induction: from Runner Start @ the Plenum to the Back of the valve. The avg CSA will corolate? Duration on the cam and the seen Start: Rpm range on the Dyno leaves me with a Good idea of what Teacher has Done. Factoring in It's set up for NOS..It has some LIFT .850+ I'd Think @ 12½+ compression
🤔 CID intake runner length + Ls7 intake runner length = ?
Cam'ing for a 4 inch Arm Meant for 8k & NOS= ?
How much work did that CID 4.5 take? I have a 1 piece 4.5 LS7 and a 1 piece 4.0 LS3 and the core shift is really bad on both. I've seen you say in the past that the CID's are only good after a lot of work. The core shift of course is in opposite directions on the two halves of the intake too.
That power from 7200-8000 is beautiful. Nice work and thanks for sharing!
How much work did that CID 4.5 take? I have a 1 piece 4.5 LS7 and a 1 piece 4.0 LS3 and the core shift is really bad on both. I've seen you say in the past that the CID's are only good after a lot of work. The core shift of course is in opposite directions on the two halves of the intake too.
That power from 7200-8000 is beautiful. Nice work and thanks for sharing!
Without going into great detail, I did some plenum mods and got the runner sizing correct. I know that's vague, but that's the best that I can do with that. Depending on the severity, I'll either weld or epoxy when needed. Generally, if there is a lot of material that needs to be added, I use epoxy. If it's a touch up or small area, I'll weld it.
Without going into great detail, I did some plenum mods and got the runner sizing correct. I know that's vague, but that's the best that I can do with that. Depending on the severity, I'll either weld or epoxy when needed. Generally, if there is a lot of material that needs to be added, I use epoxy. If it's a touch up or small area, I'll weld it.
Just a generality question, I respect hard earned trade secrets. How much power difference from untouched to full bad MF'r on the intake? My guess is around 35-45hp at peak, but you tell me. Also, is there such a thing as a published formula for runner taper? Length vs ID vs velocity? Thanks for sharing, even your simple motors are absolutely amazing.
Interesting about the CID intake, i thought they were good out the box. Maybe a super vic 4500 intake will be a better choice for my 6.0 combo. I was waiting to see if holley makes one of their split intakes for ls7 heads, but i haven't seen one yet.
Just a generality question, I respect hard earned trade secrets. How much power difference from untouched to full bad MF'r on the intake? My guess is around 35-45hp at peak, but you tell me. Also, is there such a thing as a published formula for runner taper? Length vs ID vs velocity? Thanks for sharing, even your simple motors are absolutely amazing.
Its hard for me to give you an accurate number... its really application specific. Ideal taper and length are both relative to where you want to make peak power in a narrow rpm range. Its a little different when you want to broaden your power range. 800-1200 rpm window will be a lot different than a 3-4000 rpm window. I have some formulas that I use for narrow band, but the wide band stuff has been a trial and error thing for me. More error.
Interesting about the CID intake, i thought they were good out the box. Maybe a super vic 4500 intake will be a better choice for my 6.0 combo. I was waiting to see if holley makes one of their split intakes for ls7 heads, but i haven't seen one yet.
Interesting about the CID intake, i thought they were good out the box. Maybe a super vic 4500 intake will be a better choice for my 6.0 combo. I was waiting to see if holley makes one of their split intakes for ls7 heads, but i haven't seen one yet.
Flyin: Super Victor 402 vs CID 416 = ? Of was it the cubes or the intake.
Quote: That was actually 704 with a 403'" LS2 build versus 714 with an LS3 based build. Same heads and cam. Just the diff cubic inch and different intake. It did pick up 30+ ft lbs though
Its hard for me to give you an accurate number... its really application specific. Ideal taper and length are both relative to where you want to make peak power in a narrow rpm range. Its a little different when you want to broaden your power range. 800-1200 rpm window will be a lot different than a 3-4000 rpm window. I have some formulas that I use for narrow band, but the wide band stuff has been a trial and error thing for me. More error.
Thank you, that was actually very informative for me. Will DM you, would like to get more specific on a couple combo's I'm working on. Want to ask you about doing some headwork for me, as well. Take care and have a great one!
My God the crazy *** torque comes in and just stays, not to mention the HP, Wow, and that's with a nitrous cam. Would love to see from 5 to 6000rpm. How much spray is going into that torque monster? I smell some 7 second time slips. Goes without saying because everyone already knows, but I will say it anyway. You definitely know your ****. Great Job
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Great Job 
