And the results are in!

"My bird IS the word" (mybirdistheword) 01/14/2019 at 15:29 • Filed to: None

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Lookit my engine. It’s purdy!

The machinist told me that it ran great, said he was sur prised how well considering the headers after break in have hardly any soot or anything at all in the exhaust ports. That would indicate to me that the camshaft selection was on point. O ther good news: the hack job I did painting my headers didn’t flake off, despite me not curing the high heat paint. VHT is some good stuff, I guess.

D rumroll for the numbers....

309 hp ! although mind you, that would be gross hp, not net. so... 280? as a guesstimate. More importantly I think:

Look at that power curve. tasty.

Also the damage incase you are interested. N ot too shabby I think.

lone_liberal > My bird IS the word 01/14/2019 at 15:38

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Pretty! That going to be the  perfect engine for a cruiser. 

CalzoneGolem > My bird IS the word 01/14/2019 at 15:39

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illbeinmybunk.jpg

MoCamino > My bird IS the word 01/14/2019 at 15:46

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That is a pretty power curve! And honestly not a bad price at all, especially considering it’s not a cookie-cutter Chevy 350.

farscythe - makin da cawfee! > My bird IS the word 01/14/2019 at 15:54

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smurf powaaah!

i think i shall name your engine..... gargamel

My bird IS the word > MoCamino 01/14/2019 at 15:56

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That curve is going to make this thing so buttery smooth to drive

My bird IS the word > farscythe - makin da cawfee! 01/14/2019 at 15:57

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it matches the body at least.

wafflesnfalafel > My bird IS the word 01/14/2019 at 16:04

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motors, motors everywhere!  L ots of grunt.

Rusty Vandura - www.tinyurl.com/keepoppo > My bird IS the word 01/14/2019 at 16:05

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That ought to move the car. Will you install a two-legged rear axle for proper burnouts?

My bird IS the word > Rusty Vandura - www.tinyurl.com/keepoppo 01/14/2019 at 16:07

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It’ s already got an LSD, the only problem is the ratio is 2.41. I got to buy a whole new carrier to put different gears in it. It still did burnouts before so it should definitely do them now.

RamblinRover Luxury-Yacht > My bird IS the word 01/14/2019 at 16:29

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I checked your torques vs. some torques, and it appears you have several quality torques to torque with.

MoCamino > My bird IS the word 01/14/2019 at 17:39

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I drove a ‘79 Z28 for a while during high school. Even with the weak 350 and automatic that came stock, it was a fun car.  That 403 has more horsepower and a lot more torque.  I’d love to drive one with that much guts.  :)

Camshaft Chris: Skyline/McLaren/Porsche Fanboy > My bird IS the word 01/14/2019 at 17:47

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Is that 400 or 455?

Rusty Vandura - www.tinyurl.com/keepoppo > My bird IS the word 01/14/2019 at 18:13

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That’s some tall gearing. Automatic?

Rusty Vandura - www.tinyurl.com/keepoppo > Rusty Vandura - www.tinyurl.com/keepoppo 01/14/2019 at 18:17

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That was lots of torque on that printout. So the machine shop includes a dyno run? Does that mean the engine is now properly broken in? I watch Engine Masters on MTOD from time to time and I wonder about building an engine, then immediately making a hard dyno run.

MM54 > My bird IS the word 01/14/2019 at 19:01

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Very nice! Should be very good to drive with that torque curve.

ITA97, now with more Jag @ opposite-lock.com > Rusty Vandura - www.tinyurl.com/keepoppo 01/14/2019 at 19:58

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Most, if not all, engine builders are going to break in the cam before releasing the job to the customer. There’s usually a pretty precise way to do that from cam manufacturer (and it happened at the engine plant on any new car), but once you’re past that it should be fine.

My bird IS the word > Rusty Vandura - www.tinyurl.com/keepoppo 01/14/2019 at 20:28

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yeah. 3 speed with no overdrive.

My bird IS the word > Camshaft Chris: Skyline/McLaren/Porsche Fanboy 01/14/2019 at 20:28

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Oldsmobile 403

My bird IS the word > MoCamino 01/14/2019 at 20:29

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This one will be nice since I basically undid all the smog BS. I actually really like the th350 auto as well, considering I didn’t have much choice.

Rusty Vandura - www.tinyurl.com/keepoppo > ITA97, now with more Jag @ opposite-lock.com 01/14/2019 at 23:59

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I have an engine I want to rebuild, a 250 straight-six GM. 268H Comp cam and 307 V8 Pistons. And I think a couple or other little machining tricks to the head. I have an old guru advising me.

ITA97, now with more Jag @ opposite-lock.com > Rusty Vandura - www.tinyurl.com/keepoppo 01/15/2019 at 00:03

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That sounds like a neat build.  For the van?

Rusty Vandura - www.tinyurl.com/keepoppo > ITA97, now with more Jag @ opposite-lock.com 01/15/2019 at 00:05

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Sí. And a T-5 5-speed behind it. But don't hold your breath yet because you may go purple and faint before I have it done. 

Rusty Vandura - www.tinyurl.com/keepoppo > My bird IS the word 01/15/2019 at 00:06

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So, before the rebuild, could you just mash it and smoke 'em?

My bird IS the word > Rusty Vandura - www.tinyurl.com/keepoppo 01/15/2019 at 00:47

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It would burnout from a stop, even with the BS highway gears and “186 HP factory”. Low end torque is a massively underrated thing.

As for your question regarding the dyno, my machine shop charged an extra 500$ to break in the engine for me, which they do on a dyno. I would recommend it, especially depending on your cam selection. Flat tappet cams are notoriously touchy with break in, they also were able to tune it to get it running at peak. Should basically be plug and play at this point.

Rusty Vandura - www.tinyurl.com/keepoppo > My bird IS the word 01/15/2019 at 07:34

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I like the sound of all of that. I am planning one of these years to rebuild a 250 straight-six GM engine with a 268H cam and 307 V8 Pistons that are crowned and increase compression. Weber 2bbl and a T-5 5-sp manual. Given my lack of experience building engines, paying to have them break it in on a Dyno would make sense. Did they discuss with you what oil they used on break-in or what viscosity they want you to run?

My bird IS the word > Rusty Vandura - www.tinyurl.com/keepoppo 01/15/2019 at 11:24

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They used lucas break in oil, I’m going with good ol 10w30 high zinc conventional for the first thousand or so miles, then switching to valvolene vr1. You don’t want to use synthetic during break in. Vr1 is more affordable then say amsoil v-rod which is synthetic,and its much more available. Its the high zi nc you want with older engines.

Rusty Vandura - www.tinyurl.com/keepoppo > My bird IS the word 01/15/2019 at 13:40

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When I had a Goodwrench reman 4.3L installed in my Safari van some years back, I did some research and the Engine Rebuilders Association of America — or similarly titled organization — had a recommendation which was, I think, 2,500 miles before switching to synthetic, whereupon, I filled with Amsoil XL5/30 which I’ve run ever since. When I rebuild the straight-six, I’ll probably use a straight-weight SAE 30. But I’ll look into the high-zinc thing you mention.

Interestingly, the latest Dexron transmission fluid, Dexron VI, is a full synthetic product. So no need to splurge on Amsoil there.

Manwich - now Keto-Friendly > My bird IS the word 01/24/2019 at 16:20

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If you did this all yourself, you could have done it for $433.45!!!

LOL

My bird IS the word > Manwich - now Keto-Friendly 01/24/2019 at 16:26

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Suprised I didn't get more people telling me to just rebuild it myself. Like that'd be possible. 

Manwich - now Keto-Friendly > My bird IS the word 01/24/2019 at 16:49

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Yeah... unless you have a properly equipped shop and LOTS of time, that won’t happen.

I think most people here understand rebuilding engines is not something most people can do if only because they don’t have the space, equipment or time to do it.