I love the videos brother, my thinking when it comes to making horsepower is that lots of people focus too much on a big cam vs airflow, I’m starting to see a few guys make real serious power with LT motors with really small cams, and excellent heads and intakes, BTR took a 745hp 6.2 LT plugged direct injection, ran port injection and lost 60 hp, the fuel taking up space in the runner is reducing airflow, which is why lots of times e85 don’t make more power, so think about a ls or sbc that’s already going to flow LESS air than a LT motor, we need to focus on airflow if we want to keep up with these new guys, keep up the work and r&d!
I have a stealthram on a small block, i'm doing the opposite, adding a regular hi-ram top with dual 4150 throttlebodies. Not so much for max total airflow, but for a straight down shot and good even air distribution. I have a big block accel super ram too which is just the granddaddy of the small block stealthram, but its based on a tr2y (i think), Maybe i should get a downdraft top for that one too.
Bingo! If air is made to turn: A - it gets hot and turbulent B - it'll separate if turned too fast. So the turn needs more area to slow the air down and the air will turn 12° to 15° degrees at a time before it detaches.
The old C4 Calloway built right???? Man that lead to some beautiful ZR1 Supernaturals. I've bled blue since I can remember, but for a Supernatural.....I'd cheat on my 93 Cobra.
yes the 100 plus intake on the twin turbo callaway c4 corvette uses the tr1y tunnel ram base, SLP also made one the one in the video is similar to the SLP version
I think i would made the top/Hat, thicker, as in nearly twice as thick. Even if i had to shorten the runners, or run a scoop on the hood! And possibly add a bit of a scoop to the front cylinders, at the top of the runners in the plenum. If only 1/16"-1/8" tall to catch some of the sir, and a 1/8" bar across the top in the middle of the port and the inlet . Ground flat at an angle, about 45°-60°to split the incoming air and push it down to the runners, maybe beef it up to 1/4" -5/16 and then grind it down, and possibly less angle , so it doesn't break, id definitely want to run it and test for vibration , it could break and destroy a engine, so s small tab on the inlet roof to deflect air down would be the best bet only a 1/8" little weld bead that can be ground to simulate a angled inlet port, it would require alot of Testing to keep flow , while matching best as possible.
TPI upper, stock has long runners probably twice the length of the tunnel ram. Great low torque, nothing up top. Holdner has tons of dyno runs with stock and modified TPIs
Eric, have you got your hands on a new set of AFR Gen 3 Hemi heads? I'd like to know if their small-valve 185cc heads are worth the money. Surely they're leaps and bounds better than a stock 5.7 "Eagle" head?
Eric, i think your flowbench may need re-calibrated man... I say this because there is a head flow test chart i found online with like 20 different reported flows on various port size AFRs with 5-10 documented flow numbers per each style port size and when comparing to your flow numbers of said sizes, yours is (ALWAYS DOWN)... 10-20cfm..... You did a flow test with a Holley stealth ram EFI intake vs some dual plane manifolds, and somehow those cramped, restricted restricted dual plane intakes with longer runners was flowing about the same as a wide open straight line open to back of valve shot tunnel ram design even at peak, which would or should throw red flags up... I think you have a issue with the flow bench.. Could be wrong, but couldn't hurt to have it checked and re-calibrated by the maker... Common sense would tell anyone that no dual plane is gonna outflow a straight shot tunnel ram especially one designed and cast half decently by Holley etc especially at peak.... Just saying man... Just weird, and to me doesn't add up.... Yeah i can see the top plenum causing some issues being short, but not that Stealthram you tested with the dual planes, that thing has plenty of flow area...
Yes you are wrong. Most benches are high. That’s how they sell heads. I flow every head I sell and they consistently read within a few cfm. The stealth ram flowed less because its exit was smaller and the the entrance was smaller. Just because it’s straight doesn’t mean it’s the proper size. This test alone shows how much is gained from just port matching.
He tested the stealthram w/o the top, the holley stealthram is cast really small on both sides it needs porting out the box, he stated its peak was 260 from that video, holley also states 260cfm, he also tested with it on a head which I'm assuming intake manufacturers post intake only numbers not together with a head. The stealthram manifold runners are also not offset, the tr1y and other tunnel rams are superior because there runners are ALL in line with the heads ports
I had to see this comment lol but Eric bench is already calibrated and everything to be dead on perfect but nearly all the manufacturers read high so they can sell there heads better just like everything else you buy they have claim but most of the time they claims are off just saying. So I recommend not to say hey his bench is off if you never tested that yourself also he has 2 benches to backup his data
Yes the stealthram flowed 240 on a higher flowing head without the top vs the tr1y that was 270 the stealthrams ports are not as big and the line of sight isnt as good. The stealthram does have a taller and wider box though so adapting that box on this tr1y would be the way to go you can see the stealthrams flow on eric's vid titled "Flowing Some Dual Plane Manifolds"
Авто/Мото
Great info and insight to fluid dynamics and how its moving in the intake
I love the videos brother, my thinking when it comes to making horsepower is that lots of people focus too much on a big cam vs airflow, I’m starting to see a few guys make real serious power with LT motors with really small cams, and excellent heads and intakes, BTR took a 745hp 6.2 LT plugged direct injection, ran port injection and lost 60 hp, the fuel taking up space in the runner is reducing airflow, which is why lots of times e85 don’t make more power, so think about a ls or sbc that’s already going to flow LESS air than a LT motor, we need to focus on airflow if we want to keep up with these new guys, keep up the work and r&d!
That Intake proves the low lift increase which promotes excellent cylinder filling at the low end. small port, High flow coef. at low velocities
That's a unique intake I thought it was a tpi manifold myself but yeah some modifications and make it look like it is looks interesting
This is pretty cool , old school
I have a stealthram on a small block, i'm doing the opposite, adding a regular hi-ram top with dual 4150 throttlebodies. Not so much for max total airflow, but for a straight down shot and good even air distribution.
I have a big block accel super ram too which is just the granddaddy of the small block stealthram, but its based on a tr2y (i think), Maybe i should get a downdraft top for that one too.
Air wants to go straight. My mentor told me daily.
Bingo! If air is made to turn: A - it gets hot and turbulent B - it'll separate if turned too fast.
So the turn needs more area to slow the air down and the air will turn 12° to 15° degrees at a time before it detaches.
Great content, thanks for sharing! Question, is there a holy grail combination out there between head, intake and fuel delivery system?
Great video!!! How much does a good single plane usually lose on a similar combo?
that intake is like what's on the sledgehammer corvette...I think.
The old C4 Calloway built right???? Man that lead to some beautiful ZR1 Supernaturals. I've bled blue since I can remember, but for a Supernatural.....I'd cheat on my 93 Cobra.
yes the 100 plus intake on the twin turbo callaway c4 corvette uses the tr1y tunnel ram base, SLP also made one the one in the video is similar to the SLP version
@@arturozarate1752 no supernaturals where LT1
@@Madmax.3 ZR1 LT5....I mean I did say ZR1 SUPERNATURALS. I kinda know the car....besides, there's nothing "supernatural" about the LT1.
@@arturozarate1752 opti-spark just runs on psychic energy, doesn't it?
I think i would made the top/Hat, thicker, as in nearly twice as thick. Even if i had to shorten the runners, or run a scoop on the hood! And possibly add a bit of a scoop to the front cylinders, at the top of the runners in the plenum. If only 1/16"-1/8" tall to catch some of the sir, and a 1/8" bar across the top in the middle of the port and the inlet . Ground flat at an angle, about 45°-60°to split the incoming air and push it down to the runners, maybe beef it up to 1/4" -5/16 and then grind it down, and possibly less angle , so it doesn't break, id definitely want to run it and test for vibration , it could break and destroy a engine, so s small tab on the inlet roof to deflect air down would be the best bet only a 1/8" little weld bead that can be ground to simulate a angled inlet port, it would require alot of Testing to keep flow , while matching best as possible.
It was made this way to fit under the c4 and 3rdgen f-body hoods
TPI upper, stock has long runners probably twice the length of the tunnel ram. Great low torque, nothing up top. Holdner has tons of dyno runs with stock and modified TPIs
He made his own version of the Holley stealth ram intake
GM made this intake around 85-87
Eric, have you got your hands on a new set of AFR Gen 3 Hemi heads? I'd like to know if their small-valve 185cc heads are worth the money. Surely they're leaps and bounds better than a stock 5.7 "Eagle" head?
I would like to test them but they never get sent in.
Eric, i think your flowbench may need re-calibrated man...
I say this because there is a head flow test chart i found online with like 20 different reported flows on various port size AFRs with 5-10 documented flow numbers per each style port size and when comparing to your flow numbers of said sizes, yours is (ALWAYS DOWN)... 10-20cfm.....
You did a flow test with a Holley stealth ram EFI intake vs some dual plane manifolds, and somehow those cramped, restricted restricted dual plane intakes with longer runners was flowing about the same as a wide open straight line open to back of valve shot tunnel ram design even at peak, which would or should throw red flags up...
I think you have a issue with the flow bench.. Could be wrong, but couldn't hurt to have it checked and re-calibrated by the maker...
Common sense would tell anyone that no dual plane is gonna outflow a straight shot tunnel ram especially one designed and cast half decently by Holley etc especially at peak....
Just saying man... Just weird, and to me doesn't add up.... Yeah i can see the top plenum causing some issues being short, but not that Stealthram you tested with the dual planes, that thing has plenty of flow area...
Yes you are wrong. Most benches are high. That’s how they sell heads. I flow every head I sell and they consistently read within a few cfm. The stealth ram flowed less because its exit was smaller and the the entrance was smaller. Just because it’s straight doesn’t mean it’s the proper size. This test alone shows how much is gained from just port matching.
Remember I guarantee my flow numbers most places do not.
He tested the stealthram w/o the top, the holley stealthram is cast really small on both sides it needs porting out the box, he stated its peak was 260 from that video, holley also states 260cfm, he also tested with it on a head which I'm assuming intake manufacturers post intake only numbers not together with a head. The stealthram manifold runners are also not offset, the tr1y and other tunnel rams are superior because there runners are ALL in line with the heads ports
I had to see this comment lol but Eric bench is already calibrated and everything to be dead on perfect but nearly all the manufacturers read high so they can sell there heads better just like everything else you buy they have claim but most of the time they claims are off just saying. So I recommend not to say hey his bench is off if you never tested that yourself also he has 2 benches to backup his data
Thank you for your knowledge and videos USA 🇺🇸 TRUMP
Is there an advantage over the stealth ram?
Yes the stealthram flowed 240 on a higher flowing head without the top vs the tr1y that was 270 the stealthrams ports are not as big and the line of sight isnt as good. The stealthram does have a taller and wider box though so adapting that box on this tr1y would be the way to go you can see the stealthrams flow on eric's vid titled "Flowing Some Dual Plane Manifolds"
@@Madmax.3 Thanks dude🤘🏻