High Compression LS7 Engine Build - 13.0:1

HOW TO VIDEO LINKS:
How to Gap Piston Rings - • How to Gap Piston Ring...
How to Check PTV Clearance - • How to Check PTV Clear...
How to Measure Bearing Clearance - • Measuring Bearing Clea...
How to Measure Pushrod Length - • How to Measure LS Push...
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WHERE I WORK:
www.smedingperformance.com
@smedingperformance
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DISCLAIMERS:
All videos are filmed in Mexico with trained professionals, unless stated otherwise.
All content posted under this domain has no affiliation with its poster and any relation to the rider portrayed in any way which it includes. The rider is not limited to his or her likeness, location, or personal identity.

[@scadieee]

Forced induction is cool but man N/A is so intriguing

[@Cultofpersonality09129]

Just like NASCAR…

[@bigsterl05]

Lol I always say that, any one can add boost and be fast, but to do it n/a you a bad builder/driver

[@zaknefain100]

I've owned a number of force-induction cars; turbo and supercharged.. and nothing (IMO) is near as much fun as a high HP N/A build.

[@adamspencer3620]

I appreciate seeing you turn it over after every pair of pistons go in It’s surprising how many people just spin far enough to install the next set

[@mannnygz]

why? do u think its just a good habit to build?

[@DeltaVTX]

Accuracy: hitting the right spot Precision: hitting that spot every time

[@christart8461]

You really go into detail to making things are perfect.. I may have to grab one of these engines up ..

[@carlosflores6572]

Great video! I'm excited about next week's build!

[@Kwaka28]

Prefer the smooth lines of natural aspiration. No extra things hanging of just one jewel in the crown... Oh and 623 BBC and 900hp on pump gas.. e85 oh yeah. Forget the haters your doing a great job keep up the great work and we all appreciate your time..

[@aamerelhouli7125]

Love to see the power this engine puts out on a engine dyno

[@C6Zo6]

Good work 👍

[@t0mn8r35]

Very enjoyable.

[@gbass7328]

Amazing work ethic and cleanliness. Ppl take notice! Would love to see this motor in a vid on the road and the owners response to it. Do you video long block builds too?

[@cw1824]

Great job. Love the shop. You should consider getting a sunnen dial bore gage and setting fixture. Lots of money, but worth it!

[@JacobVillemain]

We have one for our cylinder hone!

[@zachowens5168]

Great video!

[@JacobVillemain]

Thank you!

[@mattakeet773]

Liked, subscribed, awesome video.

[@Gym-bars-cars]

Tag the customer car ….. I wanna see the dyno vids … nice work

[@anetworkservice]

DUDE! I wanted to see the pickup and pan assembly of this wild power plant. Come on!?!? LS7 with a GM PERF DRY SUMP! I appreciate you showing what you did. I like your channel and the builds. Don’t skip the details on these special projects, dude! You knucklehead!

[@JacobVillemain]

It’s OEM, you can look it up

[@secretsquirrel572]

I’d like to see a video of the car running this motor. My LS7 is stock compression but cam specs are pretty similar.

[@jerrymiller2891]

I have a mallet cars built 427 with an a&a vortech 6lbs boost. 750rwhp on a 93 tune.

[@Trikekid84]

You forgot to mention to split your main and rod bearing oil clearance number in half, because you are checking the inner diameter, not the clearance between the surfaces. I learned this on our Chevy 230 i6.

[@TheRdub82]

This will be a healthy motor for sure. Wonder why he didn't opt for an ATI balancer?

[@marioleal4307]

Can you do a video on the cathedral port r1, r2 and r3 cams?

[@hillarylevenworth8824]

8000 rpm with that hydraulic cam? Wow!

[@robmccance]

I see a lot of clearance checking, which is great. But they all were perfect. What do you do if they are not?

[@sknfjuebc]

Aftermarket casting heads would be better imo but hey i think it will still outperform above all expectations

[@HoldenGuyTL]

I emailed you guys for a build quote and was told LS7 blocks are no longer available so it would have to be a dart block.

[@UnknownProductions0]

do the steel rods make the LS7 feel any lazier compared to the Ti rods?

[@y0ungtchalla420]

Would you recommend doing anything to stock ls7 engine block, when gettin the head issue addressed ?

[@ignacio5213]

Deck height should be measured with or without rings?

[@clintonsmith9931]

Always wondered how they knew the clearances would grow exactly so many tho when it is running and hot. Guess they have a little bot with a little Mike in there that does that.

[@JacobVillemain]

Lol, I like this comment

[@oiygfdxssfgg]

How do you prime the oil system prior to starting the engine.

[@brandencb19]

What’s the tang orientation on the main bearing on this motor?

[@ceperformance]

Great video as usual! My question is, will this build with the added compression and increased cam lift & duration still run pump gas? What octane will be happy do you think? Thanks.

[@JacobVillemain]

It will run 100% E85

[@ceperformance]

@@JacobVillemain thanks for your reply :)

[@Not1wetvette]

Curious as to why you were marking the bolts with a blue marker on the timing chain? What is that for?

[@yzScott]

That's a pretty similar cam spec as I'm running (253/267 .665/.665 116+6). But I built my "LS7" to 502ci. That's a lot of cam for 7 liters. When the customer gets annoyed by the giant gap between 4th and 5th because the motor won't cruise under 2K RPM, the close ratio ZR-1 transmission will take care of that. You can get a built 6060 with 3.90 gears for the low low prices of only $16K from RPM transmission. (ask me how I know). Now to to go find the video of how it dyno'd and drove...

[@paulcurtis4304]

What to do when you buy a 2008 engine for a 2007 car? does the ecm work on the swap engine if it is the same LS7/LS7

[@brandencb19]

On the main caps do all the arrows face front of the block?

[@nurburgringdreaming2221]

Wait so you can run aftermarket connecting rods with an OEM forged LS/7 crankshaft without doing anything to the rod journals ???? Just rebalance the crank is all ??

[@thejues3919]

Hey guys , I have a question, would y’all want to work on a 6.5 turbo diesel ? For a refresh . I know y’all do gas engines , but would u want to go into the 90’s diesel world ????

[@georgebrooks58]

I need that in my C5 Z

[@JacobVillemain]

Me too tbh

[@KINGRG1]

Still waiting to see a 4.6 Mod Motor build

[@ChaosAttractor13]

No heads?

[@ralphcruz8484]

How much HP can it put out being NA

[@alexmachado5636]

Hey Jacob, at what power level do you recommend going with ARP main studs?

[@JacobVillemain]

1,000

[@amderoos6298]

What’s the RPM redline on this motor, the new pistons are lighter than stock? But the stock rods weren’t sufficient or needed to be replaced? Love the enclosed dry sump, and what’s the power goal?

[@JacobVillemain]

Engine should easily make 650whp New redline probably 8,200. However the long runner manifold the customer will be running will limit it to 7,400 before running out of air. With a larger plenum/shorter runner manifold the engine could easily turn 8,000 & make big power

[@PauloRicardo-pp4ml]

Hi Sir I am doing a 3d printig scale LS engine can you tell the measure of this block?

[@jz28h]

All your N/A builds get 13.1 compression? I’m guessing with the big cam overlap you can run pump gas.

[@garyablett9284]

hey man, I’m considering becoming a small motor tech / mechanic. Would you recommend it or have any advice? And what is the money like?

[@sneakfreak8100]

Curious where you got the new block from? I want to put an ls7 in my truck but I’ve been looking for just a new block and can’t find one anywhere all local dealers said they don’t have them and can’t get them which I’m not sure is true

[@mikablep2369]

Ls7 is discontinued

[@waltermcdonald5042]

I would love to see the dyno numbers on this engine!

[@dominickguerrero5664]

I’ll have them hopefully by end of this month. Gotta get that break in done once the car gets put back together next week

[@703z06]

@@dominickguerrero5664 what did this build end up making???

[@dominickguerrero5664]

@@703z06 686 still stock head casting. Looking to upgrade soon. Should make a little over 7 here soon

[@leerespass4716]

1000 horsepower?

[@tdclymore]

is the term at TDC "quench" or "squish" for compressed volume? I knew a high performance jetski engine builder that called it the "squish" volume. Which is correct? Both?

[@JacobVillemain]

Same same

[@faxxzc]

Squish is technically only the small part between the piston and head that‘s not connected to the combustion chamber volume

[@anetworkservice]

Curious, is that the recommend torque sequence? Seemed awfully non-standard to me. ???

[@JacobVillemain]

I do not believe in torque sequences for main caps that are not connected.

[@JosephDAndrea0121]

What is your opinion on taking the lS7 to 440CI? Looking to get as much power as possible NA and still drive on the street.

[@JacobVillemain]

I am a big fan of running a 4.125” stroke in the LS7 block.

[@JosephDAndrea0121]

@@JacobVillemain Nice I keep hearing both sides of the debate. I knot its only 13 CI but if you have to tear the engine apart anyways why not

[@milojanis4901]

I've heard that the SDPC spec'd 4.100 Callies crank offers better oil control over the 4.125" stroke....

[@JacobVillemain]

@@milojanis4901 one of those things where if you ask 3 builders what you should do, you’ll get 5 answers.

[@trickeng]

Why wouldn't you use the OEM Ti rods?

[@mikablep2369]

Yea i was wondering why the heavy h beams if its na…

[@greasemonkeygarage1896]

What oil pan was that

[@JacobVillemain]

OEM LS7 oil pan out of a Z06 Corvette. Grand Sport corvettes would also have the same pan.

[@windward2818]

Where did you buy a new LS7 Chevy Gen IV block? As far as I know, Chevy performance no longer sells the LS7 427 production block.

[@JacobVillemain]

Customer provided.

[@sknfjuebc]

Im 9.8to1 compression boost buil 427 ......most guys on instagram etc dont know the differecne between a boost build and n.a build

[@mrphiscal]

So what happed when they chose to run boost😢.The always say no power adders until they add them😂

[@ignacio5213]

I got really confused on the math for the quench, could you explain please? How 10th+ an 8th- averages 1th ofth? Thanks

[@JacobVillemain]

Simple math, just average them together

[@ignacio5213]

@@JacobVillemain What an idiot🤦🏻‍♂️ thank you!

[@stephennummie7631]

Now what power is the customer chasing with this combination

[@JacobVillemain]

650ish wheel

[@stephennummie7631]

@@JacobVillemain so high 8’s to low 9’s down the quarter mile

[@390nm]

@@stephennummie7631 not even close

[@stephennummie7631]

@@390nm why you say that

[@chipcurrey653]

@@stephennummie7631 It takes 850-900rwhp to run 8.99 in a full weight c6 z06 if its converted to a th400 or powerglide. I dont think there is a single c6 z06 reliably in the 8s for many runs with the 6 speed manual on corvetteforum.

[@ronsmith7739]

Why do use valve timing at .05 ?!?!?!?!? Use .006 timing or duration its easier tells us more about camshaft !!!!!!!!!

[@malfeitorgai9112]

Block wasn't designed for 13:1. Good luck. LSX iron ftw

[@alexjuarez1247]

I’m aroused

[@JacobVillemain]

Every day

[@marccres6619]

You can save the block ,you just do not know how. And you are reusing the crank,and did it wrong,good luck it running lone time ,and you lost 50 hp without starting.

[@mattakeet773]

@ Marc cres Please share the link to your KZbin channel showing all of us how YOU do it. Then take a remedial spelling and punctuation class.