305 GMC V6 REBUILD PART 6

[@SMOBY44]

Really like the 305 series. Can't wait for the first run.

[@Shane-Singleton]

Great video as always. I knew some basics about head rebuilding but I didn't know about the guide specs and having to shim springs for proper installed height.

[@grigs249]

I want to see this engine fire for first time!

[@militarychevy711]

Great job on the heads! Thing is gonna run like a top.

[@richardkaltenbach3961]

Can't Wait For Part 7! Thanks And Keep Them Vids Coming!! Hell Yeah!

[@JesseLong-yb7mx]

I am curious about port polish and if there is any performance tricks to get those amazing motors up in hp like,4 barrel,cam,long tube headers& so on ty for sharing

[@BrewBlaster]

Nice travel for the cooling on these heads.

[@chadharmon5716]

Enjoyed this episode thanks

[@slimjim119]

heads r looking great

[@johnathongulley1146]

Awesome build... Are the valves sodium filled???

[@marklatorre9192]

Hi guy, being old school I was very surprised to see that you did not lap in the valves with compound. I had my LS heads done at a local machine shop and after receiving them found that all the valves would leak liquid past the seal area. and after hand lapping with compound and reassembly all leaks were stopped. what are your thoughts on this?

[@Myvintageiron7512]

I actually do lap all my valves by hand after machining for two reasons it gives a perfect seal and also allows me to make sure the seats are the correct width and located correctly I just haven't put that in a video yet I suppose I should do it great Idea

[@marklatorre9192]

Only a seasoned automotive machinist would have given this response. Proof again for those that aren't real deep in this subject this guy is the real deal...

[@forestlawrencegrading9154]

awesome many hours spent on the heads

[@arthurfricchione8119]

You cut the valve seats at 30 and 45 degrees does that make the valve length different on the intake and exhaust or do they both still take a .060 shim. Just curious if seat angle effects valve stem height thanks man great video

[@Myvintageiron7512]

They are the same the 30 degree seat on the intake is how GMC made them at the factory

[@georgeross7145]

...gotta wonder, with the size of those ports, would this engine benefit from the lumpy ports like a 292 does?

[@donk499]

very interesting, thankyou

[@alonzofloyd8140]

Learn a lot today Thanks

[@cutterupcustoms6039]

Hey just wondering if you know what brand of guide level you have ? Great videos by the way. Lots of great tricks

[@Myvintageiron7512]

sunnen

[@cutterupcustoms6039]

Any idea on the model of it. I have never used one like that

[@ronaldcolman6211]

Looking at the shape of the combustion chambers and the straight up and down nature of those valves, I'd be surprised if GMC hadn't considered doing this engine with heron heads (Flat head surface, chamber in piston). Would have saved machining costs on the heads and put the load onto the piston maker or their foundry though, but I assume the comparative ease of casting would make the change cost effective overall. Perhaps Heron heads just weren't fashionable enough?

[@guyazbell8169]

Sure hope not Andy! Love these videos havent gotten around to donating just yet but i will, it would be nice to see if you have or will be rebuilding a 4.3 because i have 300 thous miles on mine and even though i think its just know getting broke in its proubly going to need some work eventually :-)

[@overbuiltautomotive1299]

cool the heads video ;] thanks a million fer this video as all i have seen of theses is still pics delta cam regrind be great only one thing to do to it fer a bit of improvement

[@jjmccloud]

I put my shims under my spring locator/shim is that not right? I just thought if it was on top it would take a little away from the spring on the inside locator that holds the spring from moving any

[@briannotafan3368]

i have a habit of over kill i use o-rings & umbrella seals on my valves on a stock rebuild for good friends stops that puff of smoke on start up once a few thousand miles on engine puts it off for a wile longer

[@bulletnova7637]

Hey, I was wondering, how much can you bore one these engines. Do they use the same raw block for each engine or does each engine have its own raw casting?

[@Myvintageiron7512]

.060 is fine

[@jaywinchell2171]

do you allways deck the block and heads to the same tolerance or can u get away with a few thousands

[@Myvintageiron7512]

I am assuming you are talking about the two heads on a V type engine or both banks of the V type yes you need to mill them the same anount

[@jimmywilkinson9190]

what caused the two cly. to gauld to begin with. do you think it had a clogged rad.or was it a oiling problem.

[@Myvintageiron7512]

Not sure but judging from the head warpage it got pretty hot

[@buick4013]

Suspense is killing me! Part 7 please

[@Myvintageiron7512]

believe me man were working on it

[@chadharmon5716]

Mmmmm bush's beans....

[@guyazbell8169]

My bad Andrew straight 6 yea you never know those things were supposed to run iuntill the second coming, inline 6,s were runners for sure.

[@jimclarke1108]

Do the O ring seals do anything?

[@Myvintageiron7512]

Yes when the valve is open(intake) there is a low pressure area pulling on the guide (Intake Stroke) the the O ring shields the valve guide during this time

[@jimclarke1108]

rubber boots have to be better

[@Myvintageiron7512]

Yep they are that's why it's a good idea to add them

[@marklatorre9192]

Hi Jim, The orings seal the opening between the valve stem and the spring retainer, routing most of the oil from the rocker tip down the spring instead of allowing it to travel down the valve stem of the valve. The umbrella seals on the guides offer even more additional sealing.

[@megaeverything101]

look at all that meat between cylinders head gasket would live forever

[@jeremywhite8666]

Are you selling the 305v6? If so how much?

[@Myvintageiron7512]

Yes I don't know yet I need to think about it

[@jeremywhite8666]

Ok. Well please keep me posted. I have a 66 gmc I'd love to put this in.

[@Myvintageiron7512]

I am selling I just don't know the price yet

[@dewaynesybert6030]

how much for that engine

[@Myvintageiron7512]

The 305?

[@dewaynesybert6030]

Myvintageiron7512 yep

[@bentboybbz]

the chambers look uneven maybe it is just me

[@andrewevans1658]

As a machine shop owner for 24 years I noticed a multitude of mistakes in this video and also in a few of your other videos that I watched. You probably shouldn't be making videos or work on customer components. Hobbyist cost people more money in the long run than just paying a professional to do it correctly in the first place.

[@5sinmex]

Andrew Evans Get over yourself!

[@Living_Lodka]

Im sure all of your subscribers agree with you lol

[@JoeHynes284]

don't feed the trolls :)

[@DingDangg]

You're a buzz kill

[@JS-kd7jf]

I'm glad you said you were a "machinist" so I'll NEVER HAVE YOU DO ANYTHING!! I think your just jealous because he knows his stuff and you just THINK YOU DO!!