GET THOSE PROJECTS DONE! SHOULD YOU RUN 706 HEADS ON YOUR 6.0L FOR MORE TORQUE? WHAT ABOUT THE CHANGE IN COMPRESSION AND DETONATION? WHAT IF I HAVE TO RETARD MY TIMING? DO I GET ANY GAIN?
Пікірлер: 174
@C6Z06J Жыл бұрын
Richard, through you discussing this topic so much, I refreshed my 400,000 mile lq4. It had a lifter causing excess KR. I put a Truck Norris in, TBSS intake, and 862 heads. So far I've noticed a substantial difference. The stock lq4 leaves a lot to be desired down low. These nicely add some 2000-3000 rpm towing power for my 2004 2500HD. Less downshifting while towing my cars to the track. I appreciate the dyno time and talk on this subject!
@richardholdener1727 Жыл бұрын
Thanks for sharing
@DM-qp7do Жыл бұрын
My dad and I are going to do a Truck Norris cam and 799 heads on his LQ4. And im we're going to get my 706s ported for my L59 5.3 Along with a cam, headers and intake. Thank you Richard, we watch and learn A LOT!!!
@MrTurbocamaro Жыл бұрын
Have the same setup with 706’s ported
@scottbarrera68604 ай бұрын
How did it sound? Just got my truck Norris in
@DM-qp7do4 ай бұрын
@@scottbarrera6860 Actually i have a LS2 and a Trailblazer SS lol. So my 6.0 LS 2 sounds great with that same BTR Truck Norris cam.
@sidswift4709 Жыл бұрын
Yes Richard I believe it can AND will IF, you do the necessary things to go along with the head change ,running a cooler thermostat( 180deg) a better radiator to control not only the engine but transmission as well, also a heat range cooler spark plug, along with proper cleaning g and polishing the head and piston tops
@bryce19165 ай бұрын
I have a 6 litre with 317 heads and I did put a stage 1 cam in it for day to day driving , I found it makes great power for towing and pulling with out having to worry about detonation and over heating I also reprogrammed for torque management as I have a drive by wire throttle body ,I found by pulling out 60% of torque management really wakes up the engine with out killing it.
@seantes35 Жыл бұрын
I ran a Lq4 with stock 706 for a couple years. With ss2 cam. 100 shot went 6.9’s. Loved the setup.
@TheYamaha3611 ай бұрын
So do the 706s bolt right up? No extra machining necessary?
@seantes3511 ай бұрын
@@TheYamaha36 correct
@zacharycopeland9670 Жыл бұрын
16 minutes in and I already love this. Compression is 👑
@bluecollarhotrods9781 Жыл бұрын
Thanks again Richard! I feel like I always learn something new each time. I live vicariously through you, always wanted to test all the what ifs and old standbys on an engine dyno.
@richardholdener1727 Жыл бұрын
My pleasure!
@morley3810 Жыл бұрын
I built an LQ4 for towing in my 3/4 ton a few years ago. 706 heads, Vinci 210/218 .551 cam, LT's. Unloaded it was awesome. Towing was a different story. I had to reduce timing drastically to get it to not ping. Even with good gas and some octane boost, on hot days, towing 8000lbs 5ht wheel it would ping. So I got a bit milled off the 317s and put them back on. No more worries. Less snap driving around empty for sure, but that's not really why I had a 3/4 ton truck.
@peted5217 Жыл бұрын
Classic case of build engine for needs , not wants. GM now has 6.8 to jump gap frm diesel for your app. It's a response to need Ford covered with 7.3 Godzilla in 2020 ,F250-up. It's basically a large bore spacing LS-LT clone.
@mattangelo1280 Жыл бұрын
@peter daughtrey it's actually a 6.6 liter. Same as the duramax kinda confusing. I just priced 1 yesterday. 401 hp and 464 lb ft
@coleknight7529 Жыл бұрын
What afr were you commanding when it’d ping?
@morley3810 Жыл бұрын
@@coleknight7529 It was a few years ago so I don't recall exactly, but tried a range from stoich to very rich. Didn't really make much difference. I could get it to stop by pulling a bunch of timing out but that brings other issues and defeats the purpose. Unloaded it was fine. Just when towing it was an issue. Especially pushing wind, which we ALWAYS do around here.
@tylerphillips3243 Жыл бұрын
Yep and this year that 6.6 gas engine will be mated to the 8 speed Allison 😉
@DangrsDave6 ай бұрын
Thank you for confirming my plan to unshroud the valves on the 706. I think it will improve flow and keep the compression ratio down to allow me to not have to run premium gas.
@deoderantguy1 Жыл бұрын
I didn't want as much compression as 706 heads on my LQ4, so I went with 241 heads. Same smaller port size as the 706, but the combustion chamber is just a little bigger than 799s and it has 2" intake valves. 10.<a href="#" class="seekto" data-time="61">1:1</a> so I have some forgiveness when I use my truck like a truck. I do run 91/93 of course.
@chrismacphersom325810 ай бұрын
Thanks Rich for all the testing and info. Your the dyno mad scientist. Praise 🙏🙏
@richardholdener172710 ай бұрын
THNX FOR WATCHING
@chrismacphersom325810 ай бұрын
I flood my brain with this stuff when im doing chores and what not. Something always sticks in my brain.
@AdamOpheim Жыл бұрын
I was the one talking about compression. Running a 5.3 (short rod) in a 4.8 will put piston .125” or so in the hole. I’m told that this is so far in the hole there is no real “quench effect” so no detonation issues. On the MS3 ECU you basically run the car in a known knock free environment to get the “normal” amount of noise. Then you set this as the base. Any additional noise is then easily seen. Knock is usually a giant peak and easily seen in my experience. Very similar to the old AEM software.
@thedoorguy8173 ай бұрын
I have a 6.0 sloppy stage. 2 with 317 heads looking into 706s now. Watch ur videos all the time. Going to build my 05 esv Escalade to win tx2k25
@shawnc757 Жыл бұрын
Definitely in my plans now. I have 3 sets of 862's and 2 actually cc'd at the chambers with 61.5cc and the other set at 65cc's. I have flat tops sticking out at .010" so I will start with the bigger chamber heads and have em resurfaced and valve job. But I will be doing the porting and have em flowed.
@Txmetal416 Жыл бұрын
I almost went with a 706 head on my 6.2 but I didn’t want to mess with shrouding , so I bought some 799 heads tbbs intake, 205/210 .550 .525 115 LSA cam. This in my 2006 Silverado 2500 with 4.10 gears. Yes I tow a trailer a lot.
@travissaxton38393 ай бұрын
I have a simiset up, but stock lq4 with iron heads. Do you have issues with detonation/pinging towing heavy? I was really thinking about 706s but hearing guys towing issues has me rethinking. Also are you only running 93 octane?
@bradcorbet3750 Жыл бұрын
I have LQ4 with 706s and 8719 Summit torque cam. 1500 HD 4x4. When I was tuning I data logged in HP tuners watching for detonation because I had some 87 in the tank. Very little if any detonation detected at all. As such I run 87 gas when I run empty. When I tow my rv I switch to 91. I see no issues with detonation in my combination.
@richardholdener1727 Жыл бұрын
good plan-I do the same
@rickbutcher3459 Жыл бұрын
862, milled ported. 202 valves. Un shroud the intake. Polished combustion chamber. On a flat top 5.3 with btr stage 2 truck. Probably changing the cam up. . Tbss intake. No fire up yet.
@richardholdener1727 Жыл бұрын
2.02?
@murphdasurf1 Жыл бұрын
Richard I will let you run all the numbers you want once I put this combo in my mud truck on 44 boggers in upland California!!! This has been my desired combo for years since I talked to you about it
@DCM0718 Жыл бұрын
What needs to be done to the 706 heads to run them on the lq4 and what type of head gasket are running ?
@murphdasurf1 Жыл бұрын
My understanding is direct replacement… an it’ll run… now I’d probably still get a adjustment on tune but you should be able to run an drive right of the bay
@ericflaugher4737 Жыл бұрын
I have a L33 that I put 706s on because one of the 799s was busted in a wreck. The engine has a 2000 ls1 cam and a stock tune. It pulls hills still in OD where the old 5.3 would downshift. Running 87 octane under load it will detonate sometimes but that is also me being cheap lol.
@brianlafollette7530 Жыл бұрын
Like learning the differences
@Mikey-wf9pyАй бұрын
I need the ultimate truck engine build for daily driving.... Keep the stock ham do 706 heads new valve springs valves and pushrods with trailblazer SS intake just that alone. What do you think you would net? On a stock lq4 with converters stock intake. Gutted box and it has a flowmaster and the cats are aftermarket but they're the cheap one so once they clog I'm just going to probably do long tubes
@Mikey-wf9pyАй бұрын
My dad always hated headers even on back in the day small blocks. He ran manifolds to a y-pipe no cat into a muffler or x-pipe. That's what I'm saying. If you just literally run y-pipe from a 88 to '94 somehow bolted it up to the manifolds. Now you have no caps, just a regular y-pipe going into a muffler
@Mikey-wf9pyАй бұрын
Well, he always said headers leak... Rather have clean manifolds and lose a little bit of power gain it elsewhere
@richardholdener1727Ай бұрын
run a Low Buck Truck cam and springs in it
@michaelblacktree Жыл бұрын
Well, there goes the price of 706 heads. 😛
@eviljgish9308 Жыл бұрын
I ran both 706s and 243s on a lq9 . Both are good for a daily or pulling in a truck 706 . 243 had a lot more top-end ran both with same cam summit ls pro 550 lift 3400 stall and 373 gears
@richardholdener1727 Жыл бұрын
it was a measured 12 hp on top
@eviljgish9308 Жыл бұрын
@@richardholdener1727 yeah but u could definitely feel the difference and see it in mph .
@richardholdener1727 Жыл бұрын
THE 706 HEADS MADE MORE TORQUE UP TO 5000 RPM, SO THEY WOULD ACTUALLY FEEL BETTER
@BIGHAL2000 Жыл бұрын
706 head will give you over 11.1 compression. If you bore the 6.0 30-40 over its even more like 12.1. If you dont have 93 or dont wanna run 93 octane dont do it.
@mike-wz9bb Жыл бұрын
I run lq4 in my 04 GTO have 706 heads the heads was resurface and a valve job was done cam is a scogging dickey ls6 power max plus 220/222 .570 lift 112lsa
@alexzamora6700 Жыл бұрын
Just boost it and be happy! I don’t like head aches !
@joeculpepper2235 Жыл бұрын
Wonder how the 799 heads would do on the LY6 vs the 823 rec ports. That was my plan to try to make a little extra torque. Sounds like it won’t be worth it maybe. My goal was never power high up. Using the suburban for towing with a 6l80. Intended to use the 799 milled slightly with a BTR stage 1 truck cam and headers (only because I already have them).
@richardholdener1727 Жыл бұрын
I have tested that-please see that video-the ly6 heads make more than 799 about 4000 rpm
@jakewade7388 Жыл бұрын
I am running a LQ4 short block, 706 heads, and a 210/216 114+4 .553/.553 camshaft in a 2006 Silverado 1500 crew cab 2wd. I am happy with it. I only lost one half MPG. It definitely has more torque but, I am not blown away compared to the LM7 I took out.
@Dan-rg7jj Жыл бұрын
That's because the LM7 has about the same or slightly more torque at around 2k then your split duration 114 lsa cam. Try something like a 204/204 110lsa.
@jakewade7388 Жыл бұрын
That is really close to what I have figured out I need for the 1200-3500 rpm range I stay in most of the time. Thanks
@richardholdener1727 Жыл бұрын
the lm7 won't have torque anywhere near the 6.0l (no matter the cam)
@dudemcgee2565 ай бұрын
Either something is wrong or your tune is garbage if you aren't blown away compared to the 5.3. You should have nearly 200hp/200tq over what you started with.
@gbsgarage Жыл бұрын
Great discussion, Richard.
@dylaneaton2864 Жыл бұрын
Lq4 bottom end, 706 heads, TBSS intake, 92mm tb, btr red hot cam. 11.<a href="#" class="seekto" data-time="2221">37:1</a> SCR & 8.99 DCR, 93 pump gas. Tremec 4050 transmission in a 4x4 1500 driver, no towing. Should make good torque, hoping it doesn’t ping 🤞🏻
@toolwithintention9 ай бұрын
Any updates
@Ninelinegarage6 ай бұрын
Richard, I know this is an old video but I hope this still gets to you. What camshaft duration would you say is the limit of the 706 heads on a stock LQ4? Obviously, the more duration the higher the operating rpm. I’m considering a 224/23x .604/.604 cam and it seems like it would land right in the sweet spot but might be tickling the limit of the 706 heads rpm range.
@richardholdener17276 ай бұрын
the 706 heads don't have any rpm limit
@Cultofpersonality0912910 ай бұрын
In all honesty in Canada without E-85 and you’re towing more than a few weekends a year with the family for vacation or whatever, you need a diesel.
@prolsx9 ай бұрын
Richard, how would an L76 6.0 with stock dished pistons, very low duration torque cam, 862’s (possibly ported) with a Tbss intake and 92mm throttle body work with a very small set of twin turbos? I’m looking to replicate the operating range but far exceed power levels of the gen 6 454 this will replace. The truck is a 3500 and will be a tow/ snowplowing rig.
@chrishansen7004 Жыл бұрын
I was wondering, do you need less exhaust duration on a cam for cylinder heads with bigger exhaust valves? Would a cam like btr's hot rod or red hot cam be nullified a bit by the bigger valves considering how much exhaust duration they have?
@richardholdener1727 Жыл бұрын
the cam will behave the same way with both valve sizes
@alanfrye2706 Жыл бұрын
My build is a 5.3 .030 over current motor has 706 heads so I bought a core with 706 heads. If for no other reason to build a back up to swap out if it ever came to needing it. Tbss intake, bigger throttle body, truck Norris cam, with a beefed up valve train. May be a cheap twin turbo, ebay. I want all my power below 5k rpm.daily driver, towing truck, occasional stop light fun.should I do anything to them?
@esp68camaross3310 ай бұрын
I'm bulding .40 over 5.3 flat top 2 valve relief running a turbo sloppy 2 cam. Putting a 2" valve in help or hurt in a 706 head on this combo?
@richardholdener172710 ай бұрын
it can help if the valve job and transition are done correctly
@dickmick5517 Жыл бұрын
I have having my 243 heads ported. The guys doing the porting said 1 point of compression is worth 10hp. Of course everything else the same.
@richardholdener1727 Жыл бұрын
1 point is not always worth 10 hp-3-4% of existing power is a good estimate
@brandonhaywood3391 Жыл бұрын
I'm thinking for my LQ4 706 heads trail blazer intake manifold BTR cam LS7 style lifters long tube Hooker headers X pipe behind a NV4500 5 speed transmission in 05 2500HD single cab short bed with a utility bed. Or stock heads ARP head bolts just rods and piston and a turbo. 🤔
@JF03246 ай бұрын
I have a lq9 with 862 heads, 222/234 115 cam and 3000 stall. Is this a decent NA street combo? What kind of numbers would you expect?
@richardholdener17276 ай бұрын
yes-look at mid-high 400 hp
@JF03246 ай бұрын
@@richardholdener1727 thanks! Thank you for making all this great content!
@timbowalkАй бұрын
What recipe would be good to use with 317 heads like if I build a 408 from my 6.0 would a ported 317 work good or would a 243 or ported 706 be better
@richardholdener1727Ай бұрын
FOR A 408, PORTED 243s CAN MAKE THE MOST POWER. The question is how much power are you looking to make. Any properly ported stock heads can support over 600 na hp
@yungbloodracing5834 Жыл бұрын
So can I put a stock 706 head on a lq9 with 8708r1 camshaft
@richardholdener1727 Жыл бұрын
YOU WILL HAVE TO CHECK P-V
@LotsOfPaypa Жыл бұрын
No replacement for displacement… best torque maker is a new crankshaft
@zacklose6122 Жыл бұрын
Gen3 LQ4 with the factory iron heads (going to ditch them) planning on running a s480 single turbo setup I have good ready to go 706s or a set of aluminum 317s looking to make mid 700hp both sets of heads are stock with stock valves from what I gather the 317s are the go to for this build?
@richardholdener1727 Жыл бұрын
317...especially for pump gas
@theozman38 Жыл бұрын
Hello Richard!! This video is great timing!! 29* to be exact. Lol kidding. I just delivered my 862’s to a machine shop in Lincoln Ne. Spanelengines. I showed there and it’s a legit place. I seen some of the shop and his finished work on other heads. First is pressure tested and cleaned 🧼 up. They had that black sticky crap in the intakes,Getting.020 decked, these will go on a LQ4 ,my 04 crew-cab you answered my question about the 317heads about the bigger flow numbers but different chambers shapes. But. Decking the 317’s to a 62cc chamber size wouldn’t be a better option than a 862 or 706. Or is the entire intake and exhaust that different and not better than the 706. What was gm thinking toward flow if the 317 had more volume than 706 ?? Can’t wait for warmer weather. Thanks Richard.
@richardholdener1727 Жыл бұрын
317 flows more but makes less
@dylanfinch61866 ай бұрын
So, essentially you are telling me I'm a fool to stay with the 317 heads I have in my LQ4? I have 706 heads in the 5.3 I'm swapping out. Will the higher compression require higher octane fuel to reduce knock?
@richardholdener17276 ай бұрын
no one is a fool-the 706 heads just make more power. they are a good upgrade on an lq4
@mightymobilemediablaster Жыл бұрын
LQ4 6.0 punched 0.020 over with sished pistons 706 heads with bigger valves polished, truck Norris NSR and a truck intake. Does this sound like a decent combination?
@richardholdener1727 Жыл бұрын
yes
@markmcguire920 Жыл бұрын
My combo is a .040 over lq9 with mild ported 706 heads. .036 quench clearance. Works out to 12.<a href="#" class="seekto" data-time="61">1:1</a> I run 24° total timing. Premium 91 pump gas. In an 02 2500hd 4x4 and I get some light crackling at 1500rpm when torque converter locks up at 45mph.
@richardholdener1727 Жыл бұрын
12.1:1 seems high for that combo
@markmcguire920 Жыл бұрын
@@richardholdener1727 I know. I ran the numbers repeatedly on Wallace racing. I measured piston out of hole .006 with .041 head gasket. 4.040 bore and 3.622 stroke. 61cc 706 head
@coleknight7529 Жыл бұрын
Very interested in your combo. How does it tow? What kind of mpg are you seeing? And do you know what it putting to the ground?
@markmcguire920 Жыл бұрын
@@coleknight7529 706 heads pocket ported. .040 over flat toos lq4 block .pistons measure. 006 ish out of the hole. .042 felpro head gaskets. 12.1:1 compression. The cam is ELGIN 1250p similar to the GM hot cam. It tows fantastic. In an 02 2500hd 4x4 single cab. Gas milage? 10ish around town. Highway idk
@stephenhodge6441 Жыл бұрын
We talk a lot about e85 vs like 91 octane. I'd bet the vast majority of people modifying or swapping LS engines are not running e85. It would be interesting to see a poll on that. Richard mentioned twice about situations of running 91 octane he would just run 317 heads. So does that mean most of us should be running 317 heads?
@chrisley7919 Жыл бұрын
Interested if 706s on an l33 with summit 8707 cam would be better then using the factory 799s
@coleknight7529 Жыл бұрын
I’d have to think no. 799s are pretty good. I think you’d just be moving your torque curve down a smidge. I had an 05 sierra w the L33 and loved it. Heard some people were getting crazy mpg’s like 25hwy from comp cams 216/220 and an exhaust Plus it put more to the ground what factory made at flywheel
@jakewade7388 Жыл бұрын
Heard a guy say he had the truck Norris camshaft doctored and it said it was 216/227 109 LSA. Whether that’s fact or not, IDK.
@richardholdener1727 Жыл бұрын
its not
@terrydyck5921 Жыл бұрын
? Richard i have an lq4 6.0 like to put the truck Norris cam in then down the road put 706 heads on it will i have enough valve clearance. stock bottom end stock manifolds. looking for more bottom end torque and better economy not expecting 500 hp or anything just a good tow/daily driver .you opinions are welcome. ty. love the channel.
@richardholdener1727 Жыл бұрын
yes, the TN cam will fit that
@RoysRestorations Жыл бұрын
I recently found out about the castech heads and of course that's what I have. Has anyone welded the cracks or the areas prone to cracking before hand? I think I'm going to run them and if they crack I will weld them up and see if they hold and for how long. It would be nice to have a simple solution instead of "get another set".
@shizzelbdizzle569 Жыл бұрын
I'm doing this with a btr stage 2 cam with the 706 heads what octane fuel should I run 91 ?
@richardholdener1727 Жыл бұрын
NA?
@davidreed60702 ай бұрын
An l96 is a flex fuel ly6. 50# injectors.
@marcusfarlin8056 Жыл бұрын
Hey Richard I have a Lq9 with a sloppy stage 2 cam 799 heads with pac 218 spring upgrade trail blazer SS intake and 90 mm throttle body with a terminator x max computer. I have twin 3582 turbos. My questions is is that a good combo for some daily driving and around what could the horsepower be and should I put the 317 heads back on or would the 799 heads be ok? And looking to boost around 8 to maybe 10 psi.
@richardholdener1727 Жыл бұрын
either heads will work
@marcusfarlin8056 Жыл бұрын
@@richardholdener1727 Thank you!
@shaungiles59869 ай бұрын
Hey Rich, I have a refreshed .30 over flat top forged piston 6.0 and some Wilkes Performance CNC’ed 62cc 706 heads that flowed 303 cfm @.600 & 305 cfm @.650. I plan on daily driving with a little street racing now and then. What would be the ideal cam for this setup? I also plan on using 91 octane for dd and e85 for street racing if possible. Thanks in advance!
@richardholdener17279 ай бұрын
what converter or trans, what intake
@shaungiles59869 ай бұрын
Heads were also milled .005
@zachedwards557010 ай бұрын
I have a lq9 on the stand. Stock bore, factory bottom end with all new bearings, mahle rings, btr truck stage 2 v2, 706 heads, nnbs intake. What else would I need?
@richardholdener172710 ай бұрын
to do what?
@derrelcarter9401 Жыл бұрын
Feeling flush, I would buy a set of TEA or equivalent stage 1 706 heads, cut for use with the 6.0 and call it good. With a stage 1 cam I doubt it would lose much on top, if any at all?
@richsmith82543 ай бұрын
Rich whats your thoughts on a Lq9 with 821 heads and a a BTR stage 1 cam, for 2500hd ?
@richardholdener17273 ай бұрын
NOIDEA WHAT YOU MEAN BY THOUGHTS
@richsmith82543 ай бұрын
I had a Ls6 cam in it and bottom was terrible, pulled like crazy past 4k, I'm hoping the BTR stage 1 is going help on the bottom end.
@chrismark95438 ай бұрын
Lq4 , trying to get reliable 550hp. What combo?
@SethPowell Жыл бұрын
Richard, can you help me out? I have a LQ4 with 706 heads and a truck norris camshaft. I want to install a S480 turbo. I am concerned about detonation on pump gas. I only have access to 87, 91, and 93 octane. Would 799 or 317 heads be a better option to avoid detonation on 91 or 93 pump gas? Thanks
@SethPowell Жыл бұрын
I forgot to mention, I am looking for max power/performance below 5700RPM
@richardholdener1727 Жыл бұрын
I might pick the 317 heads for pump gas
@mattangelo1280 Жыл бұрын
Richard, What is the site you keep mentioning, "Wahl racing"? Please and thank you
@richardholdener1727 Жыл бұрын
Wallace Racing
@MF-rc4zh Жыл бұрын
Richard, my build is a stock lq4, btr trk st2, 706, flex fuel inj 36# at 58psi, trk intake and exh manifolds. Na. Have a tune done by mailordertune and run 87oct. Im getting a dyno tune done in a couple weeks. Is 87 a good idea? Should i jump to 91? Thanks for all u do!
@MF-rc4zh Жыл бұрын
Ment 93 Oct not 91
@richardholdener1727 Жыл бұрын
it can make more power on 93 than 87
@jeremymerrix6236 Жыл бұрын
To test predation you would have to hold operating temp and be able to apply load. Is that correct? I realize air temp and fuel temp will dramatically increase dation.
@jamesdavid3933 Жыл бұрын
Other questions for you. Do you think is a good combination. For my camaro lq9 6.0. Set of 862 and cam i run is comp cam 54-454-11. Thank in advance. 😊
@richardholdener1727 Жыл бұрын
WHAT ARE YOU DOING WITH THE MOTOR? STEET, RACE, STOCK CONVERTER ETC...
@jamesdavid3933 Жыл бұрын
@@richardholdener1727 Street. 3000rpm converter
@richardholdener1727 Жыл бұрын
yes
@johnmcneal8119 Жыл бұрын
I’ve got a LQ4 408 stroker with 706 heads and a stage 4 cam. What are your thoughts about a LSA supercharger getting put on that combo
@richardholdener1727 Жыл бұрын
I would pick a different set of heads for a 408
@dominiclopez74447 ай бұрын
706 heads with 2.00 valves on a lq4 6.0 with flat pistons be good idea ?
@richardholdener17277 ай бұрын
good idea
@terrydyck5921 Жыл бұрын
sorry forgot to say it has 317 heads now in a 2004 gm 2500hd
@porkchop69 Жыл бұрын
Can we see the timing map so we can get a better idea on how much timing is good for a 6.0 with 706 heads 91 octane
@richardholdener1727 Жыл бұрын
I ran 29 total on pump gas-but you won't be able to do that in the vehicle
@jsebastianstudio11 ай бұрын
My machinist told me 706 heads are junk and crack more thank any other casting🤔 what do you think Richard?
@richardholdener172711 ай бұрын
that has not been my experience, but I would run them even if cracked
@jsebastianstudio11 ай бұрын
@@richardholdener1727 thanks for the reply, care to elaborate though? Are you saying you can just run cracked heads and it’s fine? I was told where they crack they leak coolant in to the oil system? All of it sounds like a no go for me especially on a boosted application
@TheJeffe61310 ай бұрын
I believe it’s the casteck heads he’s referring to. It’s a battery lookin stamp by the rockers.
@PaulRiches-go4uc Жыл бұрын
I have an LQ9 on the stand now. I also have 706 heads, 243 heads and the stock 317 heads. In addition to those parts I have an LS7 camshaft. I'm not in love with the 120 LSA of the cam but the lift with 1.8 rockers is decent and would give a nice bump up high. Would running the 706 heads help compensate for the torque loss down low from the cam. Is it worth it to port the 706s. I'm concerned about the static compression of the LQ9/706 combo vs todays crappy fuel. I can buy a different cam but this one is lying around so it would be nice to use it. Engine is going in a 65 C10 with a 5 speed, 2.95 first gear with 3.73 rear, just dont want it to be a complete dog off the line. Thanks Richard for any insight, Paul.
@richardholdener1727 Жыл бұрын
better cam, yes on porting, either 799or 706
@shaungiles59869 ай бұрын
BTR NSR STAGE 2?
@patrickhickman8723 Жыл бұрын
LQ9 SS2 CAM 862 HEADS : estimated CR and what fuel do you recommend please??? Rock buggy is the application NA
@richardholdener1727 Жыл бұрын
go to wallace racing compression calculator on line
@patrickhickman8723 Жыл бұрын
Almighty Wally says 10.7: 1 61cc head, 4.030 bore 3.622 stroke .051 head gasket with 4.1 bore unless I missed something I get 10.7:1@@richardholdener1727
@jeremyhestand7652 Жыл бұрын
I have a 2006 Hummer H2 with a 6.0 Lq4 That is a daily driver. What would you recommend for a head and cam combination to get 500 + hp and keep everything as stock as possible. I want 500+ hp but a tight budget. I want to keep stock torque converter and fuel injectors. I was thinking a sloppy stage 2 cam and 862 heads. Please let me know best combination to keep budget low and get 500 to 525 hp. Thank you very much your channel is awesome!
@jeremyhestand7652 Жыл бұрын
Please inform me on any components I would need to buy to go along with a proper combination like high volume oil pump or a double timing chain and gear. I would like to tear it down and build it one time with the proper combination of everything all together to make a complete motor. I plan on doing ARP bolts and studs on everything in the motor so far.
@jeremyhestand7652 Жыл бұрын
I am not sure about head springs either
@jeremyhestand7652 Жыл бұрын
Plays info on lifters,pistons and crankshaft also please.
@jeremyhestand7652 Жыл бұрын
Also need to know if rings need to be gapped. I can do the work just don't know anything about proper combinations trying to keep what I can factory for 500-525 hp thanks
@richardholdener1727 Жыл бұрын
GET A TRUCK NORRIS CAM AND 706 HEADS WITH THE SPRINGS FOR THE CAM FROM BTR
@nelsonhunt55628 ай бұрын
Doing aLS swap 1993 Obs truck LQ4 with 706 heads long tube headers truck Norris cam
@richardholdener17277 ай бұрын
good combo
@woody5217 Жыл бұрын
Do you have a video of a max effort 6.2 ls na combo?
@bluecollarhotrods9781 Жыл бұрын
I'm pretty sure he does, he did 400hp, 500hp, 600hp, etc recipe videos in 2020 during the pandemic
@woody5217 Жыл бұрын
@@bluecollarhotrods9781 thanks!
@richardholdener1727 Жыл бұрын
only HCI on the 6.2L na
@glennmiller93 Жыл бұрын
What about 4.8!an 706
@richardholdener1727 Жыл бұрын
they come that way
@Ls_swap211 Жыл бұрын
What about a 5.3 bored to 6.0 ?
@richardholdener1727 Жыл бұрын
check thickness of cylinder walls
@richardzapalajr.4412 Жыл бұрын
Answer... More stroke.. I want the best,but only want to spend a buck...
@mannyzama8746 Жыл бұрын
So I’m building a 6.0 with 706 heads truck Norris cam and TBSS intake manifold for daily driver silver 1500 regular cab? Any advice on this combo?
@richardholdener1727 Жыл бұрын
tune will be required along with injectors and pump
@laurencevillegarage8 күн бұрын
@@richardholdener1727what injectors and pump would you recommend for this combination?
@devarisjackson5587Ай бұрын
I have a lq4 with 706 heads btr stage 2 v2 cam what gas should i use