383 Crate swap into my 72

[420ponies]

Well, That sounds very healthy !! Here's my old 355cu.in.420hp

 

 

[Dtret]

Sounds great. Car looks really nice too. Drive it for a bit then make changes in the winter. 

[FairlyRandom]

7 hours ago, Dtret said:

...Drive it for a bit then make changes in the winter. 

That's the plan, though exhaust may happen sooner rather than later. The couplers are already slipping, and I was essentially running open header on a shakedown run earlier today.

Header bolts needed a retighten, as did the fuel pump bolts. Seemed like just about everything else was good and tight. Throttle screw was too far out, she doesn't want to stay running at stops or in reverse, but that's easily handled. First impression is she's definitely got the power I was looking for. 

[Marks71]

Was wondering, do those Blueprint engines come pre broken in? I’d assume so because it came with a dyno spec sheet.

[DragCat]

I remember my first start up after my engine swap, what a feeling 🤘Had a "couple" of adult beverages that nite 🤣 And yea there was still more to be done 

[DragCat]

6 minutes ago, Marks71 said:

Was wondering, do those Blueprint engines come pre broken in? I’d assume so because it came with a dyno spec sheet.

In my experience, even after the dyno you still run break in oil. I'm usually around race cars so don't know the recommendation on street cars. My crate came with a dyno sheet and still had the break in requirements 

[Dtret]

22 minutes ago, Marks71 said:

Was wondering, do those Blueprint engines come pre broken in? I’d assume so because it came with a dyno spec sheet.

Clarify please. Either they are “ broken in” or they are not. What is “ pre” ?  The break in before the “ broken in” ???  With all due respect? ( sorta). Just funning around here. lol. 

[FairlyRandom]

Because it's a roller cam engine, they say there's no break in period required except to run their break in oil for the 1st 2k miles. I've taken her out a few times now for short trips here and there, and there's some idle bugs to work out and I think a vacuum leak somewhere because she diesels on shut down (I think the hardline for the trans modulator has gotten cracked). But other than that, break in is minimal.

If it were a flat tappet cam, then there's a whole break in routine where it needs to spend so much time at X RPMs, then more time at Y RPMs etc etc

Edited September 21, 2024 by FairlyRandom

[Marks71]

8 hours ago, Dtret said:

Clarify please. Either they are “ broken in” or they are not. What is “ pre” ?  The break in before the “ broken in” ???  With all due respect? ( sorta). Just funning around here. lol. 

Point taken. Yea it doesn’t make sense. Kinda like the George Carlin bit about hot water heaters.

[Marks71]

2 hours ago, FairlyRandom said:

Because it's a roller cam engine, they say there's no break in period required except to run their break in oil for the 1st 2k miles. I've taken her out a few times now for short trips here and there, and there's some idle bugs to work out and I think a vacuum leak somewhere because she diesels on shut down (I think the hardline for the trans modulator has gotten cracked). But other than that, break in is minimal.

If it were a flat tappet cam, then there's a whole break in routine where it needs to spend so much time at C RPMs, then more time at a different RPM etc etc

It was more about the cam that I was thinking of. I remember going through that routine with a mild cam in a 327 that I put in a 70 Firebird that I built for my wife many years ago.

[jft69z]

9 hours ago, DragCat said:

In my experience, even after the dyno you still run break in oil. I'm usually around race cars so don't know the recommendation on street cars. My crate came with a dyno sheet and still had the break in requirements 

FWIW, I just got my Z/28 engine back a couple weeks ago from being rebuilt. They broke it in on the dyno with PennGrade break-in oil. They changed the oil after that. (made 630 hp with a carb, not much tuning involved, just wanted to run/break-in/load it up to seat rings. Each pull gained more hp, guessing it's due to rings sealing better each time)

Below is a recent article that addresses the subject, and also discusses why diesel oil isn't really a good choice.

(Attachments are the same article, just different formats, with the one highlighted to include the diesel stuff)

Hemmings Muscle Machines - January 2024break-in oil doc.pdf Article BREAK-IN THAT NEW ENGINE RIGHT - Hemmings Muscle Machines highlighted.pdf

[FairlyRandom]

She's a whole car again.

Been on a few shakedown drives. After the thrill of the first drives has worn off, Ive begun to get critical.

The stock torque converter is nowhere near up to the task. At a stop, the grip on the crank caused the engine to want to stall. So I raised the idle. But with the idle raised, she diesels on shutdown. Short term solution is to shut down in gear then shift to park. But that grip at a stop and the heat it produces will eventually burn up the trans fluid over time. So she will get a new remanned stock TC with new internals set to 2400 stall.

And already talked to an exhaust shop who gave me a good price on 2.5" stainless exhaust with X pipe. Had a buddy show my wife what electric cutouts sound like the other day...mightve just convinced her that it's worth the extra cost. Fingers crossed.

And it currently has no fuel filter, so purchased one and some molded tight-radius fuel lines. I plan to plumb it in the small section between where the hard line comes out thru the crossmember and the pump. 

But overall I couldn't be happier. The power delivery is so smooth and instant. I've never owned a car with that much GO on tap. It's just a pleasure to drive. 

She drinks A LOT of fuel though

Eventually she'll need new shocks, and probably urethane bushings - she's a little too bouncy. And I already had plans for a sway bar in the rear over the winter. It never ends

 

Edited September 22, 2024 by FairlyRandom

[Dtret]

That’s where I put my fuel filter also. And I still have it in the carb. Since I’m local to you, what exhaust shop did you visit?

[FairlyRandom]

Well, I've never actually visited them, just a few phone calls, so I can't really give thumbs up or down yet.  But I'll give a write up once I have more of an opinion.

[DragCat]

9 hours ago, FairlyRandom said:

She's a whole car again.

And already talked to an exhaust shop who gave me a good price on 2.5" stainless exhaust with X pipe. Had a buddy show my wife what electric cutouts sound like the other day...mightve just convinced her that it's worth the extra cost. Fingers crossed.

 

Another great post with pic's 🤘

Just my .02 on cutouts.....My buddy wanted me to put them on mine so I called the owner at ARH for guidance, he told me he removes more than he installs. Thet are pretty cool tho 

[420ponies]

Blueprint engines are all in one shop. They do all work in-house, and dyno each motor built. I watched a youtube video on it (toured shop). The people working there like it when they hear those motors on the dyno. Pretty good warranty on them also.

[FairlyRandom]

1 hour ago, DragCat said:

Another great post with pic's 🤘

Just my .02 on cutouts.....My buddy wanted me to put them on mine so I called the owner at ARH for guidance, he told me he removes more than he installs. Thet are pretty cool tho 

Did he say why owners wanted to take them back off? Curious to know if it's a durability issue or something?

[DragCat]

1 hour ago, FairlyRandom said:

Did he say why owners wanted to take them back off? Curious to know if it's a durability issue or something?

Yes, durability. Once he said he wouldn't put hem on anything he owned after his original comment the conversation was pretty much over 🤣

[Scott S.]

City noise bylaws are getting intense about things like cut out...... Around here anyways. 

If the "inspecting officer" sees them, they can give you quite a hassle about them. And once they know who you are........Well.

[cny first gen 71]

Any modification of the exhaust is now illegal here in NY it's part of inspection but I don't know of and shops even look al exhaust on older cars and never heard of anyone failing a car for it. It's just another BS law our bird brain government came up with to fight noise pollution. 

[DragCat]

48 minutes ago, cny first gen 71 said:

Any modification of the exhaust is now illegal here in NY it's part of inspection but I don't know of and shops even look al exhaust on older cars and never heard of anyone failing a car for it. It's just another BS law our bird brain government came up with to fight noise pollution. 

I'm pretty sure I saw a decibel law sign on the interstate going to Syracuse, I thought [censored] and then remembered I was in NY 🤣

[FairlyRandom]

Luckily, cars over 25 years old are exempt from inspections if registered as historic in Ohio. Just can't use it as your daily driver.

[Dtret]

42 minutes ago, FairlyRandom said:

Luckily, cars over 25 years old are exempt from inspections if registered as historic in Ohio. Just can't use it as your daily driver.

Inspections or tags?

[DragCat]

9 hours ago, FairlyRandom said:

Luckily, cars over 25 years old are exempt from inspections if registered as historic in Ohio. Just can't use it as your daily driver.

Fl tried the inspections for 1975 and above in the 80's for a few years, none anymore. Va has inspections, not sure about classic/antique. 

[Scott S.]

Emission tests will be next...... If you don't already have them.