I'm trying to rebuild her put back on the road and 05 Sierra that only has 120,000 miles on it that's at for the last seven years and I'm bringing it back to life and has raylar cam BP 203 at the moment. With the very basic TuneIn trying to find the best options
We really need to see the new Raylar intake on there with a 102mm throttle body. Im thinking of buying one but would rather see real world unbiased dyno results before plunking down $1300 for an intake that should be $500.
Nice steady smooth gains across the board. The old man dropped his portable tool box off for me to do some work on this weekend. Can you say "Sawzall Engaged''? I know I can! Thanks Richard!
It's super cool this is a dry intake. I hope you do a tubular setup on this, I salivated over the idea of doing it to my Pontiac 350 when I had it. (I cut the water neck off.) shout outs to Amos for the intake mods and engine.
Your 8.1 videos are making me hang onto my rusty bodied 01 Avalanche 2500 for perhaps another upcoming brutal Minnesota winter. And, what if I need that pulling power to yank out a barge stuck in the Mississippi river? LOL The amazing thing is after I replaced the rear main seal, it hasn't lost a drop of oil nor does it have any coolant leaks...I thought for sure I'd be an oil sucker at it's mileage.
Thanks for all the testing Richard. Raylar engineering makes a aftermarket aluminum head & intake manifold it would be nice to see that with the 502 camshaft though chances of getting a aftermarket donor head pretty slim.
Richard, please do a Dodge 8.0 (1994-2003 Ram 2500/3500) V-10! I own a 2001 Quad Cab short bed 4x4 with this engine (around 450,000-460,000 miles on the original engine), and with just a crappy K&N intake, cat delete, JBA ceramic-coated titanium short tube headers and a Hemifever 93 octane tune (running on Commiefornia 91 octane), I'm running 0-60 in 7 seconds flat at 1,700 ft. Altitude. It's absurdly quicker at sea level, as even with the tune I have on it, it still runs EXTREMELY lean under w.o.t.....lean enough to cause the passenger side header to glow LAVA red after any kind of WOT run! This thing needs more fuel BADLY.... but I'm still able to turn sub-7 second 0-60s at sea level, and I'm right around a 15 flat in the quarter mile. It absolutely destroys 8100-powered trucks, especially up any grade, off the line, and in a road race. Also obliterates every Ford V10 I've ever run-even the three valve trucks. And it beat the Fords and the GMs even before the tune..... I'd love to see what these engines actually make on a dyno, the way u set them up! Love the content!!
Another nice video Richard. What you have done so far would make a killer engine for a tow vehicle. I think that both that camshaft, and that relatively mildly modified intake are really holding the power back. Throw on a set of Yella Terra YT6318 rockers, you'll need a set of semi trick metric socket head cap screws. And then the correct 7/16" pushrod, at least 0.125" wall 4130. It really wants a Comp XM284HR cam, but you have to be super careful about piston to valve clearance, it may need the YT6317 1.7:1 rocker. Billy Godbold told me it could actually be ground on their Gen VII core.
Depends on how heavy a RV you're towing. I had a 2001 Silverado 3500 8.1 and changed cam to high torque and modified intake all from Raylar Engineering. Towing 14,000 lbs there was a noticeble drop in low-end power/torque. I also dropped gearing from 4.10 to 4.56 gears and ran shorty headers. I would only recommend doing the mods if your tow weight is 8,000 lbs, or less
I’ve always thought that 3D printers were a boondoggle for most of us, but watching this video made me think. Could this be a fun project for someone to try and make an intake manifold? Unfortunately I don’t have an 8.1 or a 3D printer. Maybe an excuse to get one of each. 🤪
No 8.1L here but I've been thinking about the same for another project. It'd be interesting to print each runner then have it glue/screw to a piece of 6" PVC pipe for a plenum.
Also rich is this guy Amos available to do an intake. If I sent it to him. Or just bought a stock one online and sent it to him. Along with that debating or could use some input on which is the best throttle body to use and then leaning towards a jet mass air with the SNB closed air filter setup
Hey Richard, we've got a whole bunch of prototype 8.1L manifolds that have short runners if you want to use em. You'll throw away a ton of torque, but you can extend the RPM a bit. I'd start thinking about a set of pistons as you're going to need a lot of duration to really make the short runner intakes make sense.
@@richardholdener1727 I spent about 8 hours with headphones on grinding the stock ones down. Only took me 2 sets of heads to get a set that I didn't go through the thin castings. There's not a lot of material there. Based on the rear wheel dyno figures, worth about 15hp for all of that work. I threw my ported stock units out after I switched over to aluminum, the change was worth 65hp over the ported stock units.
Hey Micah coy, I remember watching your RU-vid videos 7 8 9 years ago with 8.1 trucks. we all know RAYLAR has great products but the prices are through the also to speak on the intake thing the long runner intake is always going to be better for torque. Be nice to have something that meets in the middle to like you said extend RPM slightly but still keep that nasty low-end torque
@@ronkirkham3410 I would say the GEN7R at Raylar with mid length runners is your best bet for a more or less bolt on and go application (requires an LS2 throttle body) but there aren't too many options in this arena. If you can find the now discontinued dart carb manifold, its about the only manifold I know of with shorter runners, but it does require a full conversion. Thing is, the displacement of the engine and limitations in the valve guides (for lift) as well as the pistons (again lift) mean that you're heavily machining heads and buying pistons just to run a cam that will support your 6000rpm, and then you still have to feed the engine enough air. The ZZ502 is about as big as you can go without kissing pistons and a 230 cam on a 496 is basically the same as a 210 duration cam on a 6L LSX. I normally agree with Richard that manifold dictates RPM, but if your intake, heads and pistons prevent you from running even a mild cam by BBC standards, then you wont be able to spin it to the moon without tearing into the motor and fixing the limitations.
If you were dead set trying to squeeze everything outta the factory form....I'd extrude hone the manifold next, testing individual runner cfm before and after The exact same mods were used by Aussie Holden efi 5.0L guys, when chasing power using the factory intake. Known as 'the bunch of bananas manifold' it had horrible distribution and runner flow due to the rough/bad internal castings. After throttle body mods....extrude honing, including port/gasket matching the manifold saw significant gains.
Hey Rich great video as always. Is there a way that you could make a connection so I could find this intake. I would much rather try this then the Raylar, much appreciated
Weird how the 8.1s were so ignore for 20 years...now lots of stuff coming out. While some people used Thema and toyed with them..so many overlooked them as junk. For so long
Long runner with turbo or twin turbo, as LT with big turbo got 800 hp, and i think it was 900flb , and as Shelby said to Enzo " fist you need the torque to talk the talk "
Awesome run with one of my all time favorite engines- been a "big block chebbyboi" since the '60s! A question or two; who was the fabricator who welded the manifold- that was good work, not as pretty as I might want, but the lack of warpage, the full vacuum seal says he knew his biz! Next, why was the manifold entry below the throttle plate left so rough? I would have thought that turbulence wouldn't help things at that point. But I just push em' till they either don't go fast or litter the landscape with parts of parts- your channel has begun to "lift my eyes to a higher plane"as it were. Will you be single/double boosting, S/C or other with this combo ?
I fabricated it for free so was done as fast as I could, still took 5 hours. It was done just for a test not for purty so was no need to spend extra time marking it look good.
@@amospgarcia9152 Sorry if I ruffled your feathers! Actually my comment was more about the fact you got it done without warping the manifold- which is why most won't even attempt such a project. Grinding it out, sanding it and all that, comes only after you have sealed up all of the potential leaks- and Richard started by saying the engine and mani were "donated", IIRRC. FWIW, I can weld; I'd trust it for maybe a bicycle or home project, but I cannot do what you did with that aluminum manifold- you get well deserved kudos for that. My further question about the throat of the thing had to do with introduced, visible roughness- I was wondering if something special might be happening there. But thanks for your response, Amos- finishing that mani and it sealing without two gaskets or "playing games" with odd torqueing patterns to try and seat it impressed me, sorry if I mis spoke.
Na you’re all good! There isn’t a lot of good pics on the inside after it was done. It’s probably nicer inside then you’re thinking. You’re not ruffling feathers. I wish more people would modify these for others. Unfortunately I don’t do them and the those who do honestly are not doing what is needed to make good power. They will do one of the three things and then charge to much.
I have an 02 silverado with the 8.1 . I paid Raylar a lot of money to modify the intake, I've noticed zero difference in performance. I also have SS long tube headers, tune and Volant true cold air intake.
I'd love to see a single or twin Gt45 setup on an 8.1, considering how well these motors respond to boost, dirt cheap ebay boost doesn't sound like a bad idea.
@@richardholdener1727 I was interested to see a twin turbo setup. I haven't seen one done, and whether a single gt45 would be a restriction with the 8.1 considering it is slightly smaller than the s475 you ran.
Please for the love of God do a 400-500 horsepower build on an olds 350. i have a 71-72 # 395558 Block/non-windowed main webs and i need ideas. PLEEEASE. Nobody ever does anything with an Olds 350. A 374 stroker would be a good idea. You can use a diesel 350 block and take it out to 440 cu. in. Cool, huh? A 440 inch small block!
I try and watch every 8.1 vid. I have these in my boat and am looking to rebuild or repower. Struggling on the decision to rebuild or go gen 6. In either case bigger CID 540-555 and 700hp goal. And suggestions??
I'd like to see how much low end power this engine could make for towing. I have an 02 Chevy with this motor in it and feel dumb when a 6.0 or 6.2 small block makes more power and gets better mileage. I need more oomph to account for the garbage mpg.
Raylar Engineering is the company that made that intake. They are way expensive though at $1350. It seems like everything Raylar Engineering makes is over priced.
Hi Richard. This not related to your video. Please forgive me. I would really appreciate your advice. I have a LS2 L98 motor bore to 4.030" Wisco K448X3 pistons. Make good power on wheels (389kw on wheels) but still smoking and use oil. Ring gup us perfect piston to sleeves glearence good. Dubbel chech at different machine shopsWhat can be the cause. I would really like and appreciate if you can give me same guidence. Thanks Richard
I'm wondering the same. Plus I have the electronic throttle body. Not sure how to sneak that larger throttle body with the smog or if there is an electronic on that large...? Thought about running 2 smaller throttle bodys.
Each thing helps a little. But testing each thing would take three intakes and three times the work almost. That becomes much more time consuming and expensive. So to just run a well modded intake is the best option.
I drove a lot of trucks with these vortec8100 engines but honestly the v10 dodges would out pull them. Probably because they are up 150ftlbs at 3000rpm where they would normally run driving.
The heads will flow at least double these numbers. It’s not a flow deal. This is a factory cam, heavier springs, and a stock intake that’s has been opened up. These are decent/good numbers for the combo! Plus who knows how this motor was treated before lol. But definitely a strong runner and can’t wait to see more upgrades!!
How did you get 420 hp on the stock dyno run? Arent these rated at only like 340? Obviously you have headers on it but im interested to know how you made so much?
I understand at this hp range, but was wondering how the displacement might affect the primary size and collector may be affected in this cubic inch range
@@richardholdener1727 I wasn’t sure. I figure at some point Edelbrock will probably make a carburetor type intake for these. Considering how popular they are becoming. Just for fun…I’ve been wanting to setup a distributor-less ignition system on an old school big block with a coil on plug set up.
Do you recall if you had to change the tune much when you swapped from stock to ported intake? I have a boat and it’s a lot harder to change the tune on it $$$$
Let’s talk torque for a second a bolt on 8.1 can handle 11-12PSI all day which is madness 12 psi on 500hp and 600 torque with out pushing to hard that’s 1100-1200hp and 1500 lbs of torque
With gains everywhere could he have afforded to chop some runner length or would it be worth it? It looks like a 125mm might have fit did you do a data log or record the map reading on the Holley? Like was there vacuum on the 102 @wot? I doubt there was did you happen to notice?
