CHEAP, HIGH-RPM, 7000-RPM JUNKYARD 4.8L WITH STOCK SPRINGS! STOCK TRUCK INTAKE VS HOLLEY HI RAM TEST
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- čas přidán 12. 09. 2024
- CAN I RUN MY 4.8L TO 7000 RPM WITH STOCK JUNKYARD VALVE SPRINGS? HOW MUCH POWER IS AN INTAKE UPGRADE WORTH ON A 4.8L? HOW WELL DOES THE BTR NSR TRUCK NORRIS CAM WORK? HOW DO I MAKE HIGH RPM POWER WITH A MILD CAM? DOES THE HI RAM HURT LOW-SPEED TORQUE ON A 4.8L? CHECK OUT THIS VIDEO WHERE I RAN A CHEAP, LOW-BUCK, JUNKYARD 4.8L EQUIPPED WITH STOCK (HIGH-MILEAGE) VALVE SPRINGS TO 7000 RPM (TIME AFTER TIME). THE 7000-RPM 4.8L WAS EQUIIPED WITH A MILD BTR TRUCK NORRIS NSR CAM. THIS TEST INVOLVED COMPARING A LONG-RUNNER FACTORY TRUCK INTAKE TO THE SHORT(ER) RUNNER HOLLEY HI RAM? WHICH ONE WOULD YOU PICK?
I'm one of those guys who would put a tunnel ram on a 4.8. I would also use a more aggressive cam & valvetrain, and port the heads. Then I'd rev it to 8k. 😛
Im probably going to get laughed at but I own a 12 mustang 3.7 , Manley rods and pistons .020, ported intakes, Coyote throttle body, Headers catless h pipe. I built the motor personally. My best on a dynojet through a 6r80 355 gears circle d 3c convertor 326whp @ 7100 /306wtq 5400. 12.5 @ 108 mph 1/4 here in Florida. Im in the process of doing a Holley ram swap in place of stock ported intake to try to push peak power out to 7200-7500 rpm. I know this video has nothing to do with a dohc engine but its neat seeing the difference the intake manifold does
I dig the build, I've seen those adapter plates on Auto Mafia's website. Always thought it looked a little goofy, but hey, if it works it works. I'd say 340whp is achievable for you. Good luck!
CFM had a turbo kit for the v6 a while back
I like seeing more done with less
That’s a bad ada** setup!!!
I like all kinds of builds. Doesn’t have to be 1000hp. Especially for the street that’s unusable anyway. Build what you want to and love it.
A TBSS comparison would have been neat seems like a very good intake
have compared the truck and tbss many, many times-those vids are up
I'm putting stock 4.8 120k in my 2008 RAV4 should be done by Christmas love the content Richard . I am out of room for a high ram. Have the truck intake clearing sorta....
How's the rav4 project coming along?
@@thaiyang2563 it's going good. As usual taking longer than expected got sidetracked with making some other videos hoping we drive it this summer
@@RobsNeighbor I would love to see how you put everything together especially the firewall and the rack n pinion. Thx for taking your time to reply to a 5 months old comment. Appreciate it.
Hey that is a nice junkyard build. Mild cam, stock springs with a 7k rev limit.
It's actually really good for towing that way.
The torque "curve" started low and remained flat until 5500, then the HP kicked in!
Some gear would make it even better. They like to sit in a gear when climbing.
Man I'm kind of new to the ls world. I have a 72 240z with sbc and had a complete 4.8 given to me and your 4.8 videos have convinced me to build it and swap it in the car
I have a 71
@@richardholdener1727 that's awesome 🤘🏻
Wow very interesting, I wonder if the low end loss gap will be less in a 6.0/6.2
Depends on what heads you use, and if you use cathedral ports the camshaft matters more as well.
Love the 4.8L content 🤙🏻
I just bought ls3 springs to be sure I could run 7000 with a truck norris NSR. Should have done this test last week😂
I upgraded my ls3 springs to a dual man is this all marketing?
@@olveramelinda haha mine is truck springs
Hi ram didn't lose as much as I thought it would. Picked up more on top too. I'd like to see the same combo with a tbss/lsxrt.
Just about the words I was gonna say
Saw your comment after I posted mine
Now try with a BIG cam please! Would consider running not a hi ram but a cheap eBay manifold, which has similar short runners
I would have expected a much larger power loss down low. Que interesante!
Would definitely prefer the highram for an auto truck. Truck intake on a 5/6 speed street truck
Yes, I would like a hi ram with my green eggs and ham 😂 come on company bonus!!
that's a very interesting test, i would expected the hi ram to loose a lot more torque........
Nnbs/tbss intake FTW
Hey Richard I've got a 4.8 with sloppy mechanics best cam pac 1218 springs and a sheet metal hi rise going twin turbo. Gapped the rings brass trunion upgrade new lifters. Any thoughts? Let me know if I'm missing anything or if I'm gonna be good . Obviously goin with 1000 cc injectors and flex fuel/pump gas deal. Love watching you man!
Also 862 heads.
Sounds like your on track man. Don’t be afraid to turn the boost up
Richard hates it when people ask for thoughts.
@michaelblacktree totally, thought we were in the sharing tree, my bad guess I'll just not ask questions. Thanks
How about something for us guys that tow? I'd like to see some low rpm Dyno pulls on a 6.0 with various long tube headers.
Truck intake for the money savings, Holley is greedy
I wonder how many times I’ve watched Rich remove a truck intake off an ls.?.?.? 50-60.?.?.?
well, this is nice. My LR4 is built relatively similar (just with a tbss cathedral port vice holley). Been wondering what to expect from it.
Although I do wonder what the oversized valves, cnc'd ports and domed pistons will do to change the power output in comparison to this.
SUM-8701R1.
see the many 4.8L vids up-but ported heads and pistons and cam and intake could put you over 500 hp na
@@richardholdener1727 The heads in question aren't anything fancy. They're just 706's. But I figured that the cathedral ports would help the 4.8l keep port velocity up even up to 7k. I just don't personally know yet.
1060 dollar is a lot of money for an intake on a cheap junkyard 4.8 plus the cost of the trottlebody If a was in the USA i tried to find a 6.0 truck or van engine or a 5.3 to start with
Hey i bought a mad maxx cam from Tsp for my 6.0 bored to 6.2 with the fly cut pistons … im running 6.0 heads now.. z
Id like to see you run a similar setup 6.2 with nnbs intake vs holley
Already tested an NBSS vs Holley in the big intake test video
@@richardholdener1727 how much hp do you think i am robbing myself of ?
Im running 243 on my 6.2 bottom end with nnbs intake & small cam..
Looking to go ls3 top end maybe stock heads or aftermarket… but not sure if 5g’s of work is worth 100hp lets say?
Not counting looks and If its a daily driver with stock stall converter like majority of chevy trucks suvs your gonna want as much bottom low end as you can get for stop light to stop light driving i assume so truck intake be the way to go and save some money
If it was in a car with lower gear ratio it would be great for the high ram intake. For a heavier truck and higher gear ratio I would definitely go with the truck intake for that broad power band.
More torque at lower rpm the better to move the truck.
I’d be curious to know with stock manifold and catalytic converter’s
Hi Richard, Love your videos. Can you recommend 1 or 2? LS/LT books for me ? I am looking for a thorough listing of all LS/LT engines/ years available in cars etc. In particular I am looking for info on the LS/LT? Cadillac (only?) supercharger engines. An over view of all the LS/LT cyl heads- years made O.E. equipment years etc. I know the 2nd gen 2.3 cady superchargers are most desired. Is there a book? showing the aftermarket options/ ecus /suggested mods etc- thanks .
all that info is avail on line
HI, yes there are many books What do you think are the best books/ magazines? which ones should I buy?@@richardholdener1727
I enjoy these videos but hope people dont get fooled into believing that big lift long duration cams are the best idea when running fast on the street. A small displacement motor with a giant long duration cam will probably be the slowest car on the block if the car doesent have the required low gears and high stall speed converter to allow the engine to operate in the needed higher rpm where the engine makes power and torque. A stock 4.8 engine making 340 hp will probably run circles around a overcamed 4.8 engine even if the overcammed engine makes twice the hp but it needs to be spinning 8000 rpm to do so.. Most street cars need less peak hp at super high rpm where it never is used ,and more average hp spread over the entire rev range from idle to redline..
this was a sub 500 lift, 212 intake cam-so over cammed isn't accurate
Your cam this time is fairly small compared to what you usually run but 212 @ 50 thou is still a lot more then the stock that I think we're around 190 /191.. It doesn't take much to overcam a puny 4.8 liter engine to begin with as they move so little air. I'd like to see you post video of the idle quality at a reasonably low rpm with the 212 cam with a four barrel carb and the vehicle idling in gear and a stock torque converter. Sure it runs good above 3500 but you never show how they idle and the power from idle through say 3000 rpm which may be 99 percent of where a normal vehicle operates as a daily driver. Torque at low revs under 3000rpm will probably be much lower with the aftermarket cams especially on a tiny 4.8
Long runners fall flat on their face beyond tuning freq. Ala gen2 TPI, k24… Tuning boost is gone and the resistance is high. Could you run the FAST manifold on that combo?
Hi Ram are short runners
It's really wierd how having different length intake runners create different power levels. You could easily understand this with a carburetor engines but on EFI??
id rather run truck intake it would be almost like adding slightly more cubes
richard, we really dont care to watch you install this crap, thats 9 minutes i could have wasted. we all know how it installs, and if we dont, we probably shouldnt be watching this.
you are the only one who felt this way
Would you trust the gt45 eBay turbos on a drag car?
yes-for 700-750 hp
I cant belive theres one of those intakes on an all aluminum 5.3 just sitting in my back yard, to bad it dont belong to me.
I want to swap my 4.3 with a 4.8. Or a 5.3. Or a 6.0. Or a 7.4.
Is there a specific order to tighten or loosen bolts on any U.S. engines or staged torquing sequences, just wondering?
yes-torque sequence is used on every engine during assembly
21 👍's up Richard thank you for sharing 😊
Richard. I am building a 57 Dodge town wagon for street and some adult fun with a 91 Corvette frame. I am going to drop in a LS 4.8 and a 4l60…which I intend to TwinTurbo. My question is to you….? there specific size turbos that you recommend?? motor speced with stage two BTR cam and springs after market long runner intake. Not sure about TB size or injector size. Oh dang did I mention I have never built an LS. 🎉🎉🎉. Happy Trails
you pick the turbos based on desired power output, but you need to focus on that 4L60E
After a little research, I see what you mean. What would you suggest for a good automatic transmission with? Let’s say 500 hp at the crank. Happy Trails
Do you have any idle clips with the sound and the chop chop ?
there were idle clips in the vid
I will answer the question of will I use the high ram with another question, will it fit under the hood?
Hi it’s me with the weird questions again. I know radiused intake runners flow better, but does a full bell mouth in a plenum or a flush fillet with the same radius flow better ?
I'm pretty sure he did this test a couple years ago ... super Ritchie intake stuff is always great
I think full radiused flows more than 1/2 radius in the base-but there are more questions than that
Didn't surprise me. The oe intakes aren't very good past 6k rpm. You can make them a little better overall porting the tb and intake ....but they still gonna lack once you put a cam in up top.
peak power came at 6600 rpm with the truck
Would the tbss and bigger tb make more torque? And hp too?
TBSS most always make more torque than a standard truck IM. They also make more overall and average power than an LS6 intake manifold.
@@kenm724 yeah I got real excited when I saw the test come out then I saw the three bolt tb and was like eh well, I guess I can find the back to back truck vrs tbss
truck is what this 4.8l came with and far more common-but check out any of the many TBSS v truck vids
I guess you don't see many lytos or l20 because they are still on the road I'm presuming
they might be there too
Try the biggest throttle body on truck manifold, if it makes more torque all it needs to do is breathe more
The truck intake can only accept the stock 75mm throttle body. The only exception is the 05 LH6 that had a 4 bolt breadbox intake on it that was opened up for the 87mm throttle body. The tbss/gen 4 intake has the 90mm opening, but is a bigger intake.
the throttle body does not dictate torque, that happens after the throttle body
I know the difference might have not been so dramatic, but it definitely would get more dramatic the more you compared low RPM camps vs high RPM cams. Overall I really like this test though. For a street engine living most it's life under 3k and just seeing a few short rips to 6500 here and there for giggles... the truck manifold is better. Shocking.
Agreed... unless you Street racing the thing... then I think hi ram and steeper gear would apply better
Agreed. Camshaft makes a difference with cathedral port heads.
I wonder how much wear is on that motor with that high rpms its probably on its way to blow up again 😂
Average power is still better with the truck manifold
And here I was recently telling someone to not waste their money on a TBSS intake for their 4.8L
🤔 maybe on this test engine the TBSS would be the perfect option between the Gen III Truck intake and the Holley Hi Ram.
Have you tested whether stock valve springs could support a NSR cam + boost?
look 2 videos back-where we ran a blower on this motor
Hi ram needs more Gear
So basically you can run stock ls3 springs on a stock to mild cam to 7k ?
A stock cam on a LS3 won't make power past 6500 with a truck noris cam yes you can run it out to 7k and still make power due to it having slightly more lift and duration
The lobes on the nsr cam are designed to be more stable yes you can run ls3 springs and go to 7k with nsr tn. RH did it here with 200k stock truck springs
I don't understand your comment-are you taking about an LS3 (stock cam and TN cam) or a 4.9L with an LS3 cam?
First
pole position
What were are the commenters? I'm second? Lol