Speed Secrets: Why Build a 5.3 Stroker?

[@Compcams1976]

A couple notes on this: Yes, you CAN make more power with a turbo setup, or going with a 6.0, or whatever else. However, this test was done in the interest of proving that there are many ways to gain power. Hot Rodders have been building 383's for decades and making great power from small block Chevy's. If you're interested to see what doing a turbo setup would gain you, check out our LST Turbo Camshaft test video from a couple months back!

[@banefarooqbey7809]

COMP Cams my I have the build sheet with all part numbers please ?

[@Monsta2592]

Yeah and a 6.0 will be alot more then a 5.3 to start so good video

[@David57979]

Thanks Man. Never everybody wants to be like everybody else with a 6.0 and or Nos. I like being different or rare. So thanks for the video truly. 🤝🙏🏽

[@rogerharrington2584]

Comp cams is there a build sheet with all parts listed with part numbers, and everything else used to build this engine ?

[@carlolovoi4109]

What cc pistons?

[@ArmyStrong98]

The secret to horsepower is BIG HAND GESTURES!

[@timothywalker2273]

Nope only Richard has that power

[@richardclary6267]

But you have to shave your head for better Aero

[@bloodyscare9]

Never thought I'd see a video of Johnny Sins talking about an engine while doing Karate chops. Good video though

[@jtome84-91]

Jordan Arias hahhahahaha

[@MrChristianbowman82]

😂

[@JKZ103]

Seems like the way to go for the money. You have more displacement than the 6.2 and half the money. Plus you can gap the rings and set it up how you want... good stuff!

[@ryanward5056]

You should provide links to all the parts used for the build

[@alexanderdrywall3043]

If you don’t know then you probably shouldn’t be doing it. It’s find an lm7 at a junkyard that rotates. And trust a good machine shop.

[@jonathanpalahitski9596]

You need to do a 363 5.3 LC9 stroker build

[@LiLSoprano]

correct me if im weong but a 5.3 bored .20 or .30 over and a 4" crank is what it takes to do that right ? i have a built suburban i didnt build and thats what is claimed to be done !

[@Flub_Kub]

Im planning on boring and stroking my 5.3L to have at least 460hp, but have 500tq down low at the flywheel. Im going to be usig it for my 2011 suburbsn with a 6l80e (beefing it up as well), and 3.73 gears. Im hoping to tow at least 10,000lbs reliably. Wish me luck.

[@timothywalker2273]

I built a 5.3/383 stock heads a comp cam valve springs it made right at 500 HP almost same torque

[@nathanbaker4253]

Richard, How about building a stock 4.8/5.3 4inch stroker with stock cam and then add stage 1,2 & 3 truck cams. This would be a good towing motor and should be equivalent to a 6.0 block that you tested before.

[@trentonnapa518]

what I really would like to know is what was compression ratio

[@bobbytables658]

this.

[@Not_Of_This_World868]

Idk exactly, but it would still run pump gas. If that's why you're asking.

[@ChoatesCoatsandCustoms]

That's a hell of a gain. Stroked 5.3 making 600hp. This is a rowdy little engine..

[@jordbjor1]

Think it’s just theoretical power they didn’t show shit. Only proof I can believe is they used his forehead as a cam profile

[@SuperFuzzyman123]

First Richard always does testing, that Dyno sheet doesn't come from nowhere dipshit, the same engine is featured on his channel

[@ctg288]

I ran this cam in a stock long block lq4 once, and it made way more power than it probably should have with that little bit of compression. LOL

[@elvynortiz3456]

Pls show us the engine on the dyno and also do a gt45 turbo kit on that 383

[@clipjunkie]

Contemplating an LS swap for my car so it's interesting to see different combos and setups. While turbos produce impressive numbers and seem the more popular choice these days I'm not sure that would work for me as I would like to try my hand at autocross. Thanks for the info.

[@JoeIsCrazyWillman]

For autocross, you want instant, linear power dispersement, so a supercharger is the smarter route for that.

[@alexzamora6700]

Or a high compression , high reving , all aluminum would be good .

[@banette36]

Hey Johnny! I'am now in the beginning process of rebuilding my 04 5.3 LM7 . Having to bore .0030 over , also going with BTR stage2 cam , have SS hedders but shorty's installed a year ago , will be using those till then Wany directed suggestions from you is always appreciated ! Also rebuilding trans and rear end . My baby has never have me trouble in the past until now.. started chasing a ghost. So with 200.000+ od . Better do it now than be sorry later..

[@WelshKennelzCombine_DMV]

Doing the same

[@tyjaebowie933]

5.3 heads can supply way more airflow than a 5.3 can even use in a street usable rpm range I wonder what the stock 5.3 heads could do with just a stroker kit and cam with stock cylinder heads

[@randydarcey2947]

Speed secrets is the stroker of you tube videos

[@gz28]

is there a parts list, or kit or anything? what would we need to do this turn key?

[@soopashaggy]

Where do I get the stroker kit for a 5.3

[@idriwzrd]

Really, great explanation. But with my illiteracy, all those indecipherable words got in the way of the story. The pictures did help, though.

[@joshtheking1772]

Be very careful. People have been known to do this and end up pulling the skirt out of the bore and snapping rods. Look up the video by Tom Nelson Racing engines "Why is the LS so good" and you'll find out why. Unless you are running an RHS block I dont suggest this. You rock that piston in that cylinder just once and your motor is history. Just something to consider when picking out which piston you are going to run.

[@masta51]

The 3.9 has a lot better options and 580-590 hp so leaving a little more on the table for a conventional ring pack. The 4.0 slugs now on the market move the rings tighter up high and removes the skirt so it's less likely to rock in the bore. They should have just went to a 6.0 or bbc 8.1 if they want to make some real power.

[@jubjub905]

Topper Harley thats not real power?

[@masta51]

By today's standards that's v6 and 4 cylinder power. Cats out of the bag with power and big league parts for cheap.

[@jubjub905]

Topper Harley ....yeah that kind of horsepower in any engine isnt common.

[@masta51]

A 2008 dodge caliber srt4 was 330ish hp. These are engine dyno numbers so they seem great til you start getting into drivetrain loss it's really not much.

[@nathanandrick8634]

Where did you get the pistions with the 3.905 bore and who would you recommend getting them through.

[@michaelsantosuosso7284]

It's just an LS1 piston .010 over roughly. Not an issue, the issue is getting pistons with shorter skirts not to rock at bottom of stroke out of the cylinder. Wisco will make them for you, but I think already making them.

[@outfitsgarage88]

That sounds great. But what was the cost?. Some guys are looking to build hp on a budget. But it would be nice to see cost aswell.

[@7REDDRACO7]

my 5.3 into a 383 is a great idea thanks

[@curlynigero6417]

To get the 4.00 stroke did you use the ls7 crank, and if I decided to go with bigger pistons could I use this same cam or would I need another , and would it give me more hp ,and would a turbo make even more hp with either application?

[@sogood4u489]

Why is cam quest 6 gone from the website to download I loved to run tests with cid, custom head cfm numbers, intake combos with different cfm and camshaft options. Food for thought.

[@davidvonanderseck8649]

What kind of pistons. I just found out summit has a cheap kit for 5.3 It’s a 363. 4 inch crank and 5 over pistons. But the guy didnt mention valve relief. I really like the idea because a monster 4 inch crank. Bigger then the 400 sbc and good heads. I believe you said 706 heads.

[@BadAssEngineering]

Can you please start a series on Gen V LT motors ??

[@rifleman7313]

As the adage goes there's no replacement for displacement. Although turbos and forced injection are starting to change this.

[@MrIgor1955]

I wish this would have just been a stock vs stroker comparison with everything else being the same. When you toss in a cam, ported heads and an intake to the stroker, it's no longer a legitimate or fair comparison.

[@JoeIsCrazyWillman]

Absolutely. That, or put heads, intake, and cam on the 5.3 and test it that way first before doing the stroker kit part

[@bigblock406ta]

Can you boost a 5.3 with a Bore that big and what if it’s a aluminum block. I acutely just aquiard a 4” crank and trying to finger out if I’m going to use the aluminum 5.3 block and save a bunch of wight or go put it in a iron 6.0 block. I have both it’s a race car 3275lb it’s been 9.88 with a 4.8 with cam and turbo but I want to get the car to it’s new chassis stickers limit. Lol.

[@davidmarlowe6300]

Isn't the piston unstable at BDC with 4 inches of stroke in a stock sleeve block ? Wouldn't it be better to do a 3.750 stroke with a 4 inch bore on stock blocks?

[@mathewshackelford8037]

they're using the longer rods that keep the piston in the sleeve

[@james10739]

Have yall done a test on what the accessories use and is it more of a flat rate or a percentage

[@thewheelman1993]

Why do 383? I've heard people will stroke the lm7 to 347ci max and make the same power with just a bore difference or buy lm7 stock size forged internals and build a boost 325. Plus isn't going for 325 ci to 383 ci dangerous for the skirts in the cylinders? Or am i wrong?

[@overnovacated6481]

So do we need to run a fast intake or can we run the TBSS intake and gain similar results!

[@farncoisbisson7737]

Hi.. what about the l83.. maximum bore possible is 3.800... maximum stroke 4.000.. would you go 363ci or keep the bore closer to the stroke?. Like with a l8t crank to make it 350ci at 3.860 stroke and 3.800 bore.

[@davidl5121]

The Combos, is it for a truck application or car?

[@billbraski2175]

i ain't buying what your tryna sell. I'm just gona put a 250 shot on my bone stock 5.3 if it blow up I got 3 more sitting behind the shed.

[@408SPLKINGS]

Nos = Viagra for limp dicks only good when your on it ( drag racing ) N/A = Ready to go every time all the time. Turbo / supercharger = like N/A but better.

[@benharrell6168]

Cool story bro but you missed the point

[@therrinchisley508]

Question i have a 5.3 when i bore and stroke it do i use 5.3 pistons still or i go up to 6.0 pistons

[@zakspop]

Ughhhh.... You use new pistons that are the size of your bore. 5.3 are 3.779. But when you bore it they will be different. a 383 with a 4 in stroke will have 3.905 like he said in the video.

[@therrinchisley508]

@@zakspop thank u so much sir

[@michaellinkous7449]

I have a 5.3 stock other then long tubes any suggestions on head cam and intake combo looking for closer to 450 best bang for my buck!

[@foxyepoxy602]

BTR Torque Cam Send stock heads to Texas Speed for port+polish Texas speed 1-7/8" long tube headers

[@michaellinkous7449]

@@foxyepoxy602 how much you think that that will produce in to numbers?

[@foxyepoxy602]

@@michaellinkous7449 my estimate would be between 50-90HP and 40-70 torque.

[@steelofcrom]

OK what did you do to the crank ? Throw it out and get a new one or have it machined for the bigger stroke ? And what are the connecting rod sizes, rod and main bearing sizes? Do you have to have $2000 fast xfi management system ?

[@jason6175]

Is boring the block to 3.905 inches necessary? Is clearance an issue on a stock block with a 4 inch stroke?

[@mathewshackelford8037]

boring is necessary to increase the displacement

[@rogerharrington2584]

Is there a complete parts list for this build ?

[@tonypellerin2443]

When you get the points bill for this list please let me know

[@grand3lyfecuhh798]

Where do I find a stroke kit? Which one did you use here?

[@alexanderdrywall3043]

The cam used is the comp 54-454-11????

[@trentlandrum3682]

Did you have to use the 383 stroker rotating assembly?

[@refresher1000]

Will a 383 made out of a 5.3 be reliable long term as a daily driver also will there be cooling issues with the motor bore being enlarged that much. Also say I just wanted to punch out my 5.3 to a 5.7 ls1 and I already did a cam and head swap on my 5.3 to a BTR truck Norris cam and 243 heads I know the heads will work good but what about that cam? Will I need to change it after making it a 5.7?

[@jpalm500]

Is there a cheaper option for the 5.3 that uses a stroker crank but still uses the gen 4 factory rods?

[@dwaynemiller68]

Very professional I love your videos or learning lessons

[@genepatrick]

Have you ever tested an iron 5.3 versus an aluminum 5.3?

[@lopezchevys]

Would there be a difference between the 5.3 iron vs 5.3 aluminum block?

[@alexzamora6700]

The aluminum l33 has a higher compression ratio.. think they make about 40hp more than the iron blocks .

[@freddienz68]

NOW THAT IS SOMETHING TO THINK ABOUT 🔧👍

[@ghostlycondom8295]

383

[@KeepGrindingGarage]

So does the 347ci displacement from the 5.3 have a stroker crankshaft or stock crankshaft

[@Willdabeest27]

Do you think you can make more hp with a turbo set up with a 5.3 ls stroked out to a 383

[@paytonmac5665]

Im doing eagle 366 rotating assembly 799 heads .ELGIN E1257P cam low boost twin 177275 bw turbos. Top 7.5 pound BOOST pump gas .Build to last pull car trailer etc. Turbos should last long time. And piss off my brother with his ford 460 lol. Man i really like your vids.I watch some vids two maybe 3 times.

[@davidvonanderseck8649]

Can you do this to a 5.7 and just have a bigger bore. I would say 6.0 for a 4 inch bore but there hard to find

[@chriswilson3327]

What stroker kit did you use?

[@robertthomas3907]

Hi Richard, question what do you know about boring out aluminum gen4 5.3 to 5.7? seeing videos about the gen 4 being able to support the 5.7

[@scrub_lord]

Shouldn't you get the block sonic tested before boring past 3.800?

[@ethanslape8889]

is there a good place to get the bottom end components to build a 383 out of a lm7? as well as a parts list?

[@mikekaine2698]

Will it run on pump gas and what was the compression

[@jamesramp]

I like the idea of a 383 stroker 5.3, but I live in California. Can I build a 383 stroker with a mild cam and still pass smog? It's for an '06 sierra with an L59 (flex fuel LM7). Thank you for any insight.

[@opeopeope]

Anybody know what the max bore on a L83 5.3 would be?

[@WhiteKnightMoto]

Got a build sheet for how to build this?

[@briankinzer4175]

Would this be a daily-able setup

[@asiasurgeont7842]

Can u do this w/ a ford 5.4 also? 🤷🏾‍♂️

[@aldavis8266]

Kale to the finish line! Lets race! 🏁🏳️‍🌈

[@malachimalone1820]

could you safely run boost on this stroker set up if the block gets sonic tested and running on e85

[@219streetcars4]

Hi Richard what was the mdl# on this cam?

[@dominiquewilliams2559]

Hey, I'm Dom. I am building a 2005 6.0. I will be putting this engine I'm a 65 impala. I have been looking at all the videos and doing a lot of research and i still need help choosing a cam. Can you please help me. After talking to a few guys a had a few in mind. Can you help decide the best for me ???

[@michaelcunningham5023]

Did you make that power with a stock bottom end?

[@dynamicdopamine]

What's the best 383 stroker kit name brand to buy?

[@dangerdavefreestyle]

would something like this be good for a truck that is sluggish at low rpm and making it up the hills?

[@rrwe22]

Slowness up a bill would probably need a converter

[@darrellsteele2377]

For the 5.3 Stroker build, what Piston/rod/crank was used? Also I want to go with Holley Sniper instead of the FAST intake - can I still get close to 600hp? Lastly I want a daily driving beast; hidden in my patina 67 C10, what combination do you recommend for 5.3 GenIII?

[@emmanuelestrada5914]

Those hands 🙌

[@Tyler_5521]

What fuel are you using

[@BackyardSwapShop]

What stroker kit did you use

[@beaudavid6335]

I have a 5.3 gen 4 block, am I able to bor it out to a 5.7 and put a 383 internals ( summit racing, sells a kit for this, but it says beginning year 1997, end year 2002 ) the kit is $1100 plus and I don’t want to waste my money. PLEASE HELP

[@fatpat4807]

How much would that setup cost????

[@Darkeiser.7]

Ya know what. This will be the engine I build. And I'll probably put it in my BMW.

[@David57979]

Was wondering what's a great 5.3 ls 383 kit out there.

[@overnovacated6481]

A few companys make stroker kits for a 383 LM7 Scat Eagle with all the good slugs from Mahle JE Kieth Black ATK builds a nice 383 LM7 ready to go for under 3500 from Summit Racing just bolt on some good cathedral ported heads trailblazer intake 92mm of course and do 600 horsepower burnouts🤜💥🤛😎😎😎

[@gageandgunnar4042]

How would you make 600hp on a l83 no power adders?

[@Mr86cutlassboi]

I have a 2004 5.3 engine with 706 heads and I also have a set of 243 heads. What the best heads to put on a 5.3

[@Compcams1976]

243 Heads are generally considered to be the best stock casting Cathedral Port heads there are.

[@Mr86cutlassboi]

COMP Cams Does 243 heads work best with flat or disc pistons. Would I lower my compression if I put them on my engine

[@Carado5150]

It would lower the compression but just have the heads milled or run a thinner head gasket. 243 is a better head.

[@craigberggren7250]

What was the compression on this set up?

[@michaelsantosuosso7284]

Compression Ratio???

[@donnybier7516]

I love speed secrets

[@nastychevys]

I love the info, but the whole 5k bolt on 5.3l stuff seems a little rich for an engine I can replace for 500 bucks. I mean how many dollars per horsepower are you willing to spend? Why not take that same 5.3, and stuff a good cam, and a single turbo to make the same 600, and do it with way less money, and effort. Plus when it blows up from beating on it you are only out a junk yard engine, and not a high dollar rotating assembly, and heads that are trashed. Just seems like a lot of playing "pick the most expensive parts" engine building, and we have yet to hear any real speed secrets. Right now the only speed secret seems to be a fast lsxr manifold that costs 3 times what a tbss manifold costs, and it delivers very little comparatively.

[@mastertek383]

And what the fast intake does gain in hp is paid for with precious feetus pounds out of the torque account

[@KingJT80]

The block itself is pretty damn strong. So it wouldn't blow up with a stroker kit in it and you probably wouldn't spin it past 6500-7k. But a turbo would be good with about a .550 lift turbo specific cam in a stock 5.3 but you don't wanna run a crazy cam with no valve relief or else it'll be a boat anchor way sooner than later

[@KingJT80]

@Richard Skipper a 5.3 makes sense when everyone is taking everything else and caught on to cheap hp LSXs

[@Compcams1976]

@@KingJT80 Our new LST 5.3 Turbo camshafts are exactly what you're describing!

[@Compcams1976]

@Richard Skipper Actually, in the past year alone we've released more budget friendly engine and valvetrain options than ever before! We know where the market is, but there is also a limit to how "cheap" we are willing to produce products and still maintain a high quality standard.

[@minibikemadman]

Wow all NA.. crazy. Im shootin for 650 wheel boosted on a L33 lol

[@wildta4302]

Guy like a freakin Ninja.

[@bigfootgarage2201]

Why not just start with a 6.2? They make aluminum 6.2 put the same heads intake and cam on it and it makes the same power 6.2 liters is like 383 ci

[@isrramingonzalez5660]

How much whp does it make?

[@jacobx8206]

How much does the 5.3 to 383 stroker kit cost?

[@codywilliams3602]

I seen some going for 2500 on eBay.

[@justinturbo4323]

That engine won't hold up in the long run you would be pulling the piston too far out of the sleeve. Watch this video and he explains why. kzbin.info/www/bejne/jKTQk5WriNZso5I Skip to 8:40 on the video for the explanation.

[@realshidd3062]

6.2 heads is what I want to try

[@dirtymike4053]

How do i figure out if i have a l33 or l77 how do i interpet this

[@jacksonreich5148]

L77 was a 6.0 only offered in the Caprice PPV. The L76 was the 6.0 in the G8 and trucks which I think you’re talking about. Look at the head casting number, the L76 has 823 heads and the L33 has something else

[@jazamora7521]

What heads were used on this set up?

[@bowhite1293]

CNC LS6 I think he said.

[@alexzamora6700]

Yup they CNc ported ls6, cast number 243 or can do 799s same diff.

[@oldmanmtb1443]

Where can i find the 383 stroker for the LS

[@Twinyo100]

Get a 5.3 take it to machine shop

[@albertgaspar627]

The problem is going to be piston rock when that increased stroke pulls the piston out further at BDC. Those who run these strokers long enough on the street are reporting these issues at refresh time.

[@alexzamora6700]

Yup..

[@jamieschinkai1267]

Other than LS Jesus, Mott hooples, Richard holdener is the realest in the game rn.

[@601performance5]

I thought turning an iron block 5.3 into a 383 stroker would eat pistons, I considered building one but I had very experienced builders and racers tell me this.

[@601performance5]

Can someone please let me know if there is a way around this?

[@mikegager]

@@601performance5 getting the right pistons?

[@joset8074]

How long would the stock tranny last with this mod?

[@Jus10-born2Run]

Not long. Get a 4L80