I like the 400s

Some food for thought, if they had developed the 400, we probably wouldn't have seen the 383 development we've had for 40 years, it created opportunity for guys like Joe Sherman to push the 350 block combos to do things it was never designed to do, blessings in disguise

Pulled mine out of 1973 station wagon lol.The old 2 bolt main 511 block.This,,now 406 sbc is Still A force on the street no question.Still stands it’s ground and most definitely A thorn in any new modern sports cars ass.These little motors just plant you in the seat.

@@b.c4066 Well said...Joe was doing 383s in the 70s man that guy knows how to pull power out of anything! Wanted to build my 509 casting std bore 400 so bad but was concerned about twisting it hard so did a 383. Mistake..lesson learned. That larger bore really makes a bigger difference than Id ever have guessed. Look at the torque!

Are you willing to part with one

Kept a perfect cleaned magged std bore 509 block for yrs...forced to sell it as I had to move suddenly...downsizing! Wish I could afford to ask how much for one? Blueprint casts 4 bolt 400s but no idea how hard their metal is. Id love to do a milder 400 than my 383....Weiand 177 st blower 210-220 head Could pull some gear out of it and still be as fast if not moreseo.

The flow numbers will tell how good of a job the porting was and the valve job. What really matters is how it runs I suppose. GM block or Dart?

Never really a replacement for displacement as long as there are parts that will move enough air to build a bigger displacement air pump . As long as the air is avaliable, a bigger displacement engine will make more power . I used to think boost was a replacement for displacement , but thats not true either . Problem with boosting big displacement is chassis , not ability to make power. If top fuel could hook over 500cid, they would run it . Displacement always wins if all else is equal if you can put it to the road.

should have stayed 400. more power

I agree with this. I have a 400sbc sitting in my building right now that I passed up building for a 6.0ls cause it was cheaper. For a family man like myself that doesn't have alot of money to play with its hard to build a sbc to run like a mild ls for the money. I love my small blocks its just my wallet doesnt lol

Agree....the ls is sorta what we woulda wanted in an 18 deg 350 in the 80s. What id give for a killer set of Dart 15 deg heads on my 383 sbc. THis time it will be 12.5-1 no holds barred If it cant run deep in the 10s Ill run it off a cliff lol

I will try to do more.

Lol. I have one in my ‘74 Nova SS. Virtually identical to this featured engine, but mine has 11:1 compression, and it is bored .040”, which makes it a 409. Love it, but I’m still not finished restoring the car, so I can’t really say how much i love it until my car is finished!

@@mistered9435 Updates? Never ridden in a slow built 400..even wtih ported iron Chevy heads and a flat tappet. TOrque they make is addicitng.

@@gordocarbo nothing new on the nova, but i built my 1997 camaro SS engine. I converted the LT1 350 to an LT4 355. I had the lt4 heads mildly ported, found an lt4 intake and crankshaft, and used a COMP XFI292 cam (big cam). Running a 2800-3200 stall 10’converter, 3.73’s, and long tubes. It is plenty strong for an N/A LT engine! My nephew races, and he drove it a couple of days ago, and he says it’s either basement 12’s or high 11’s on street tires.

@@mistered9435 Familiar with the LTx engines done a number of builds. Last one was a 96 CE vette LT4 6 spd, 4.10s. Someone overported the heads, hotcam dougs shortie headers basic 2.5' exh. In Ca air with a not so great driver it ran 12.50s all day. True daily driver super reliable. I ported the intake for him when it was a 12.90 car so it picked up a bit

@@gordocarbo that’s awesome! I still love the ol’ LTx’s. C4’s with an lt4 were always great!

Your old SportsMan II are caveman now!!..

I had those same heads with port work. When I swapped to afr 195 and no other change I picked up 4 tenths and 4 mph.

Did you ever finish it?

@@demarques1911I did. It ended up making 414whp & 382wtq on a DynoJet. I figure with 18-20% parasitic loss, it’s a bit over 500hp & 470tq at the crank.

I had an early demon 750 that ended up having aluminum shavings/flashing that looked like a hellicoil, once i took it apart. It was in there from the factory. I had just put this demon 750 on, while my vehicle was in my garage, and i had the air cleaner off just letting it idle, setting the idle mixture, gave it a quick jab to ✔️ throttle response, and all of a sudden fuel just squirted out of the top of the carb., and landed right on the hot hedders, it started a fire right away! I scrambled n shut off the vehicle, n ran over to get a hose that wasnt Long enough, but i was just able to reach the fire with the weak azz water pressure we had, n put it out. I took the carb back, and got a 750 holley dp w/notched floats n jet extensions(that i put on),blocked off the power valve, n i put 80 jets front n rear, n it ran great=no more fires!

Yep

It is nice. It’s going in a chevelle.

@@WeingartnerRacing it’s scary how a guy can pour so much money into his motor but doesn’t know how to modulate mixture screws when it’s running fat at idle. Lotta guys with lots of money but no real passion for real hot rodding and tuning

Those Vortec heads are good for 450+ HP...

Yeah you missed out, should have bought it.

If the Vortec heads had the screw in studs and upgraded springs they will fetch some money. For a street 383 truck build or a bracket Nova they're great.

@@ahoneyman - And easy to convert to studs and better springs...

@@BuzzLOLOL Never done it. I traded the guy at the machine shop a 4 bolt main block for the work.

His 195 heads flow 306cfm.. Thats 650hp airflow. So? How can they be too small??..

195 cc heads are way better flowing than the stock smog heads. 195s are plenty for a street motor

11 to 1 solid roller nothing crazy on the profile. Profiler 195s victor jr no port match or port work at all. It is 406 sbc. Car weight with me in it race ready 2735. Run 93 pump 93. Runs 6.80s in the Florida heat and when we get decent temperatures like 73 or less it has been 6.71 at 101 several times. 💪

@@Bobthebuilder.69 ... You got that right!!.. Smogs are smogs for a reason!!??..

In mid 90's a customers '64 Chevelle. With 1970 400 smallblock. 300hp 327 heads , RV Crane cam, some Edelbrock smog high rise. A good real 780 Holley( dog leg boosters) metering blocks on back. 4 speed. 3,555lb. 90* day. Ran 11.80 @ 115.345mph. With lean jetting at 90*.. 72's on primary side was way too lean. With 195 heads?. I'm sure I could have got an 11.60 flate.. At 3,555lb.

There quality control was for sure I got an 830 with brass bleeds in the metering block and half fell out haha talk about 1 unhappy 430 chevy

@@faustthehammer8706 yeah I think I saw a video about it from one of the top engine builders which there is a bunch in the USA

@@burnychaplin4601 yeah we ended up putting steel metering blocks in and it ran well then made 657 610 lbs

Good luck with that,,😳

$1000 boat Anchors on those 2 bolt.they always have core shift and prone for cracks.the four bolt are better but they have a limit also.shp blocks are the way to go for what little cost more

@@KS-dg5zh 2 and 4 bolt blocks are fine, not everyone is running promod

400 blocks all had 3 core plugs per side because of simease cylinder walls. My dad had a 73 Caprice wagon with a factory 400 2 bolt main.

@@johnpopoff7950 no, not all had 3 plugs. 509 blocks had 2 plugs. 511 and 817 blocks had 3.

The valve was fixed before the dyno runs.

@@WeingartnerRacing 10/4 we raced a 406 for 8 seasons with 5.7 rods with no significance of wearing on pistons or bore . Had afr 220 heads and lunati solid roller. Good Ole engine

You have to run a 6" rod in small block of stroke 3.50+ or it jams rod in to cylinder walls.. Dr. Vizard's gotta" whole piece on that.

Y is that

@@TheYellaboy72206 cheaper than a 383 build and more torque.

I guess u have a point.... I just put my 400 in my ext can 89 c1500 with the sniper setup full exhaust, vortec headsaftermarket intake, it sounds good and I've burned out in the driveway a few times with a few snorts of the gas so it should b pretty fun once I get a remote tune

Yep

Im not going to price it. All 18-13 are designed for 4.125 and larger bore. The rockers costs more than several aftermarket blocks and you still need different pistons.

Or for my 70 c10

@@robertwiniecki4987 hell yeah

Most likely but it’s still very nice for what it is.

Stock 400s use the same compression height as a 350 or 305. The shorter rods take away so much room for counterweight. You can make a 383 stroker with stock 400 rods and 350 pistons if going really low buck stupid is your idea of a good time. The Scat crank in this engine is less than 300 bucks from summit, the internal balance thing is so nice.

They still take a little heavy metal to internal balance.

@@v8packard not the piece designed for 6" rods. The longer rods give more room for counterweight clearance so the counterweight can be larger(pn 9-400-375-6000) The scat piece for 5.7 rods is external balance (pn 9-400-375-5700) and the exact same price. There is no way your getting any mallory for free

@@timothybayliss6680 I never said I am getting Mallory free. I said they take a small slug to internally balance. I have done about 3 dozen 383s with 6 inch rods and the Scat crank, all internally balanced and with a small slug of Mallory.

That's just not true at all.

No it’s not. That is still 406. A 427 would be 4.125 bore 4inch stroke.

@@WeingartnerRacing I googled it a corvette forum I caught a typo or something lol Best olds could stuff in a smallblock and had to make bore and stroke smaller and reinforce webbing just to contain it and steam holes controlled the bore size and hay 2-300 pounds lighter than a big block the 375 stroke gets tougher by the pound

@@WeingartnerRacing thought i was wrong 69 vette 376 stroke 250 bore 30 over 434 cubes 580 horse 530 tork nicks Garage on youtube sure the bore on 400 is 4.125 but its amazing they stuffed that in small block and got 400 4inch stroke 250 bore 454 455 the steel 427 376 crank is hard to find

@@WeingartnerRacing kzfaq.info/get/bejne/jNR2psybtcu2f6M.html

@@WeingartnerRacing Further investigation was confirmed it was the Famed Z11 Engine 50 went in 69 vettes and only 50 were sold over counter may have been half aluminum blocks but 376 stroke 4.250 bore

Probably would be down 20 on horsepower and torque

@@WeingartnerRacing thank you for your response! I think you said in the video that 34 degrees produced the most horsepower, pretty sure that’s exactly where afr said those heads created the most horsepower in their testing. I’m running the Edelbrock pro flo 3 port injection and I can adjust the timing pretty easy from my handheld monitor, I’m gonna make some passes at 34,35, and 36* to see if there is any difference in mph or et. Sounds like I’m gonna land on 34* according to your results. Love your channel!

3.875 crank?

Yes

It would have helped but he didn’t have any n

I'm using the same heads on my wife's 383, built to be a moderately aggressive cruiser. Our cam has a bit more duration, but lift is similar (.546/.565 with 1.5 rockers). Because these AFR heads have exceptional flowing exhaust ports, I was comfortable running a 1.6 intake rocker, with keeping the 1.5 exhaust rocker. Making it .583/.565. I spoke with AFR before doing so, as I thought about running a 1.6 exhaust rocker, which would have made it .603. The tech guy at AFR said that the springs are good to .600 and that .603 shouldn't be an issue, but stated that he wouldn't chance it. I'd be happy with 1.33hp/ci with her 383.

The heads that usually make less torque are as cast. Ported heads are usually the same or better.

I can get any of these parts with the exception of the stock block.

@@WeingartnerRacing how much for rotating assembly with flex plate and balancer sir ? Ty

The tighter lobe separation builds more cranking compression not wider.

@@WeingartnerRacing Doesn't a tighter LSA have more overlap? Causing a rougher idle?

@@richardb6273 yes but the entire valve events are compressed and add to cranking compression. Tighter lsa makes more torque down low and works best on lower compression. Most people don’t care about idle quality

@@richardb6273 ..Nobody races at idle??.

Maybe but the engine wants what it wants. My 355 should not like a 1000cfm carb but it does.

@@WeingartnerRacing carbs are more complex than complicated, and can be run great WOT, then suck driving down a road, especially when you got secondaries that can open at certain times and changes signal pressure, etc. I've heard SMI does a good job at making carbs run great. Anyways, That's why I go EFI. Way easier IMO. Keep up the good videos bud.

You asking about the rods? Rod bolts use a bolt and nut, cap screws thread into the rod with no nut used.

I looked and didn’t see that.

@@WeingartnerRacing yeah i just looked up the part# and im not finding it either. But its in their 2022-1 catalog. part# CMPEB3501-4125

Procomp changed their name again I see.

Dart sells an SHP block with 4.125 bore and 350 mains, but it's closer to $2200 , but seems like a really sweet block to start from. I've been leaning towards building a 400 for my old camaro and this video is really helping push me in that direction.

@@lollipop84858 LOL - If I thought it was the secret of the universe, I wouldn't have been sharing the info with folks and would have kept it to myself, but was trying to help those that aren't aware of them. Unfortunately, I believe the days of getting a $1700 SHP block that's been bored, honed, and bagged are long gone as these blocks just saw a price increase, unless Carl gets a huge discount on them???

Sure it’s in the video.

Get a bigger head then a 195 though.

I don’t build engines anymore just heads. I can sell all the pieces with some tweaks that would work better.

It’s showed at the end of the video.

I agree but it’s better than nothing.

@@WeingartnerRacing That is true for sure.

He prints the corrected. However the uncorrected numbers are better for predicting track times. Since the air the engine sees in the dyno more closely matches the track air conditions.

Ok. I voiced over them.

@@WeingartnerRacing my apologies I did end up hearing them it was 10 horsepower higher than my guess.

Ever figure out what is wrong?

It could be many things. Duration makes a difference

I have a 406 511 block and it pulls to 7000rpm pretty easily. I don’t run it that hard but when the engine builder ran it on the Dyno they made sure it would hold together. That’s with 10.5/1 AFR 210’s , .548 .548 lift hydraulic roller cam, solid rollers lifters, 1.6 rockers

@@WeingartnerRacing As do valve springs

I had to go with different springs than the AFR's came with for the same reason

It’s not bent now. I replaced two valves.

Lol 2× $ for ford build and 2 many different breeds of blocks heads and rest most chevys pre 88 are interchangeable unlike a ford no ? Why Chevy rules the pack

@@lollipop84858correct. Way easier for hot rodding. Wanna put a powerglide behind an ls: no problem. Want roller lifters on your Sbc : no problem , get the spider from a vortec block and ls lifters. List goes on and on.