Ls springs on Vortec heads? Here's what you need...
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- Опубликовано: 2 фев 2020
- Here is the cheapest way i have found to run a cam with up to .550" lift.. No machining required! No stupid 50 dollar chinese made Comp tools...
Lapping all 16 valves, changing studs, and springs takes about 2 hours or 8 beers! Super simple and best of all... CHEAP!
If you like this, gimme a like and drop a comment telling me if it worked or not... 
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Comp Cams was founded in the US in 1976. The company has five US locations including headquarters in Memphis, Tennessee. Industrial Opportunity Partners (IOP), an operations-focused private equity firm based in Evanston, Illinois, and owner of Edelbrock LLC, announced the acquisition of the COMP Performance Group in Feb of 2020. What is Chinese about any of this?
Thanks for the video ordered all my parts... Last build the machine shop charged me out the ass to do this.
Great video, I did my vortec heads but I just use my Mapp gas heat up the studs a little bit they all came out easy.
Cool, mine did too!
Use tapping oil.
Thank you so much, I needed this so much
I sell a complete kit with beehive springs Pac retainers and +.05 locks that cure most of those issues, the package your working with will end up at 1.740 ish installed height, the ls springs are designed for and rated at 1.800 installed height.
What is the price on this kit? I have .508 lift on mine
I spot welded the factory stud
You have a spot welder?
awesome cant wait to see it in action
Good video buddy
Question: If using a beehive spring like this with a 1.8" rated install height with the stock vortec valves, Comp 787-16 retainers and stock keepers, can you still run a self aligning rocker arm? Some guys use +.050" keepers for added lift potential, but then it doesn't allow enough valve tip for S/A rockers to work without contacting the retainers. I have a .510" lift camshaft, I'd like to run a heavy duty S/A long slot rocker with a similar spring (PAC 1218).
From what ive seen, behive springs, comp retainers and stock rockers work well up to .550" lift.
@@Poopdogsays Thank you
So glad I found this, I thought I was goin to have to spend a boatload on machine work. I might have missed it, did you replace the valve stem seals?
Yes change the valve seals. I use viton seals, they run about 15-20 bux for all 16.
Thanks for the video. I didn't know that the stock keeper would work with these retainers. Do you locktite the studs in during installation?
Yes.
Thanks
You're welcome!
Noob here. I'm building a 383 in a 1980 4 bolt main block with 1999 Vortec heads. The cam I want to use is CL12-240-4 (Duration 270/286, Lift .480/.489). It looks like what you saying here is that I wont need these expensive beehive springs (26915CS) that Summit says I do? Thanks in advance.
Correct. The ls6 springs handle up to .550 lift.
@@Poopdogsays without the 50 thousandths offset keepers to?
What's the part number for the seals if you have it ty so much for the video
Comp cams 518-16
22 bux on amazon
Question Iv been doing a bunch of research . My cam is about .480 .480 I did the spring and had the guilds cut . Anyway Iv been getting conflicting info on the factory rockers . With those springs and studs will the factory rockers still work.
I believe so. .480 isnt really that much lift. If you were in the .550 lift range, id recomend long slot rockers, but you should be just fine!
Do you know the stock vortec rocker arm ratio? Can you run 1.6 ratio roller rockers on vortecs without any additional changes? Thanks!!
Stock is 1.5. You can run 1.6, but they have to be self-aligning rockers.
Is the stud height the same after installing those screw in studs
I dont know, i didnt measure them, plus half of the pressed in studs were pulling out of one of my heads.
Wow, a fuckin usefull video on RUclips! Thanks dude!
Quick Question: Can this be done on 70's SBC heads? Same parts?
I dont see why not. The only problem is old smog heads dont flow and have huge 76cc chambers. There really isnt a reason to put any money into them when aluminum china heads (i have vids on my channel) are so cheap and flow really well. But its all up to you. Vortec heads are a 30-50hp gain over smog heads just bolting them on stock without a cam change.
@@Poopdogsays I actually have camel humps.... just said 70's for general bolt up. This guy seems to agree ruclips.net/video/ksYXtZ-gIp8/видео.html
How much lift can I get out of doing this with those springs?
It won't add any lift. The keeper will hit the top of the valve guides regardless of what springs are in it. Max lift is about.
.420. You can get more if you trim the valve guides down. If you don't know exactly how to do it. Have a shop do it. You can really mess up your heads if you don't do it quite right. Mess them up to the point where it's just cheaper to just replace them.
Using the appropriate spot face with correct pilot it is easy to cut down the stud boss.
The ls6 springs with the correct retainers from comp cams as well as offset valve locks from crane cams part #99095 you can get .550 lift without cutting the boss down. I wouldn't run .550 but maybe .520 or so. I'm running .520 with no issues
@@6.liter-beater I as just giving options to get more clearance.
@John Wehunt I know I was mainly replying to Toms comment
How far do you go down on the tap what’s your reference
The heads are drilled right through into the ports.
The studs are 3/8 but you used a 7/16 tap? I'm confused how that works. Also is it LS6 springs that you are using?
3/8th where the thread into the head, 7/16th on the other. They have two different sizes on the stud.
Yes these are ls6 springs.
@@Poopdogsays Opposite. 7/16 tap for a 7/16 hole in the head. It's 7/16 going into the head.
@@BadBiden yup, i stand corrected, thank you!
Anybody running 1.6 rockers with Vortec heads? Any push rod clearance issues? Thanks for the video.
I put 1.6s in my stock 98 silverado pulled the cats & 90$ tune from wait4me tuning. Woke her up
Lynda Coenen installed them last Saturday, very noticeable difference. The push rods are much closer to the bottom of the hole in the head but still enough clearance. I have to re-jet, the 1.6’s made things very lean at cruising.
It's called a louis tool...meant to clearance the pushrod holes. summit sells them. Or a 1/2 drill bit. You don't want pushrods making contact w the head
What torque spec did you use for the rocker studs?
50 lb-ft.
@@Poopdogsays Thanks for the response. No problem with cracking the bosses with those little shoulders on the studs?
@@1965l88 i havent experienced any, but you could go 25-30 ft lbs and blue loctite.
If you put screw in studs do you have to put in guide plates?
No. But with explination. The studs i show in this video dont have a hex on them, so therefore, after tapping the stud bosses, they replace the stock press in studs. You wont require a guide plate.
But.
Studs with a hex will require a guide plate, because they are taller and the base of the hex wont seat against the head/stud boss correctly.
Without a guideplate, the hex of the stud sits about .030" above the stud boss of the head. So basically the stud is too long without a guideplate.
Stock rockers are "self aligning" so if you go with a normal rocker arm (non self-aligning) instead of stock self-aligning rockers, it will require guideplates. But self-aligning rockers are redily available from the aftermarket.
I know i rambled on and probably didnt make sense, but if you or anyone has a question, please just ask.
Thanks, PDS
Thanks for the explanation
@@jesserodriquez4829 Did it help? Lol it took me 2 hours to try to respond in a cognitive manner.
Good luck with your build man. These heads are a lot of fun! Especially on the street!
Stock 12cc dished pistons 9.4:1, felpro steel shim head gasket, voodoo 268 cam. 2500rpm converter, cheap "air gap" style intake and some kind of gear above 3.25:1 and you'll have a blast!!!
4000 pounds with 3.73 gears and shit stock converter, 13.50 at 99mph.
Have fun buddy. But hey, do me a favor, when you get it built, post some vids/links!!! I can't wait to see it!
Spray into the 11's? Woo hoo
Yes it helped cuz now i know i dont need the guide plates lol. Yea ill try to upload a video when its done i ordered a summit cam kit and just seen they sent the crap lifters so i might just return it and get a different kit
@@jesserodriquez4829 cool man, im looking forward to seeing it!
I've been out of the scene for few years now back in so I'm not up to date on a few things, is fixing the vortecs low lift issues still just cutting the guide boss's down or has that issue been been circumvented with certain spring retainer combos now? That would be great I have a set of stocker's I haven't fucked with yet and I was always gonna buy the diy cutters and mod the bosses and rocker studs and never got around to it. I don't see needing huge lift but the .450" give or take is just not enough, no less than .480 but having the option of .500 to .525 or so would be plenty.
The "beehive" springs make it unnecessary to machine down the guide bosses. It may not be the cheapest solution, but it's a good one. Requires less labor, I would think.
Best fucking video on commie state media RUclips explaining this process. Thank you!
Hell yeah!!! I hope it helps!
@@Poopdogsays helps me a lot on my build 👍
🤦🏻♂️ is the vortec heads a sbc l31 heads or the ls vortec heads…
Small block chevy. Al LS heads are aluminum
Hey I was going to swap the cam in my 99' l31 with vortec heads, going with the Dr.bumpstick more than likely it has 465/470 lift, also using ls6 blue beehives with 787-16 retainers and self aligning roller tip rockers, check out my obs in my video, I need some views, thanks... If you have any tips on the cam swap please let me know
Valve spring install video with no valve springs installed
Do you really need me to show you how to operate a spring compressor...
poopdogsays /
No I don’t, but I did want to see if there was any machine work etc... involved in installing these springs. Do I need to show you how to label a video?
@@limabravo6065 the title says, what you need... i broke down the part numbers and everything. I guess if you dont like it, request a refund!
Your response is not required..
Hellyea
Valve springs are generic .
Do you know what the installed height is for factory vortec spring and what the installed height on the LS springs ends up being on the vortec heads?
No. I never checked. I ran the springs with .030 shims under them to bring up the spring pressure.
355 sbc, these heads and 6cc 4 valve relief pistons .015 steel shim gaskets for 10.5:1 comp.
I ran a lunati "292" which was 230 @.050 int and exh .480 lift with 1.5 rockers, but i ran 1.6 for .512 lift and a 109 lsa. I installed it 4 degrees advanced.
Boss hogg 3200 stall, 81 malibu 3500 lbs with me in it with a 3.42 gear. It ran 13.4@106 and 11.99@119 on a 125 shot. That cam pulled hard to 6500 and never had a problem with floating valves.
This make a really fun street driver. Good luck!
Putting LS springs on these heads are not a good idea from a durability point of view. Duel Springs are the only way to go on a performance engine. If you crack a spring, the valve, it’s going to torpedo the piston on a single spring set up, however on the dual spring set up, even if one valve spring cracks, most of the time you’ll just bend the valve and it won’t go south into the chamber.
I have 5.3 with over 430,000 miles... And my springs are worse than ls6 springs. 1000's of dudes have done this swap on their sbc's... I'll take my chances. Oh and your dual (not duel) z28 springs are complete 70s obsoletion, along with 3/4 race cams and vega converters. Get with the times..