doin' it right the second time (Americanmusc1e's 383)

[americanmusc1e]

pictures:

my old rod bearings


the new engine






the thing I've been driving, painted with a spray can, does 0-60 in an astounding 14.5 seconds, and it has dual 4" speakers


one of the few non-chevrolet vehicles I'd like to own, my Dads 1980 Jeep CJ5 that he bought new in high school, not the factory body though, a full fiberglass piece with a one piece front end

[highperf4x4]

lmao dual 4" speakers eh?

Your old bearings are sick!

[americanmusc1e]

Originally Posted by highperf4x4

lmao dual 4" speakers eh?

Your old bearings are sick!

it had a radio, but no speakers. We added a radio and some NEW Pioneer 4" speakers, My dad says it sounds pretty good, I think he's crazy!!!!

and ya, the bearings were pretty bad!!!!!

[americanmusc1e]

Originally Posted by americanmusc1e

it had a radio, but no speakers. We added a radio and some NEW Pioneer 4" speakers, My dad says it sounds pretty good, I think he's crazy!!!!

and ya, the bearings were pretty bad!!!!!

OK, I said that backwards, It had speakers (blown), but there was a radio delete plate in place of the radio.




By the way, we got the motor mounted this evening before it got dark, just the belhousing bolts and motor mount bolts though........................tommorrow, I have lots of work to do!!!!!

[highperf4x4]

Well git after it!! You gotta get that motor broke in so you can video the first burnout for me!!

Just to be sure, you did put the flat top pistons in right?

[americanmusc1e]

got the motor in and broken in yesterday, today we adjusted the timing and upped the Idle speed and took it for a drive, to a really cool car show (I should have brought a camera).

I fell in love with my truck again!!!!! the lopey idle sounds beautiful!!!! the sound system rocks!!! and although I haven't floored it yet, but the 388 has plenty of power!!!!!!!!

YouTube - 383 startup

[highperf4x4]

Told ya.

Now I want to drive it!

[mikajo39]

Awesome! Sounds like a beast! Any idea power its putting out?

[Hoffman65burb]

sounds great man congrats, that first 1500 miles would kill me

[americanmusc1e]

Originally Posted by mikajo39

Awesome! Sounds like a beast! Any idea power its putting out?

this is Desktop Dyno, I know that DD can be up to 15% optimistic, but I have ported/polished vortec heads(this graph is with stock vortecs), so the difference should be pretty close

[americanmusc1e]

Originally Posted by Hoffman65burb

sounds great man congrats, that first 1500 miles would kill me

it's killing me too!!!!!!!

[americanmusc1e]

ok, what is the idle ignition timing supposed to be(vacuum advance disconected)???? the truck runs best with about 20 degrees, is this too much???

I also had a problem with the power valve (on my Holley 4160), the motor was running rich, and the truck would idle with the mixture screws all the way in. I pulled the bowl off and looked at the power valve, then I put it back together and it ran fine!!!! It idles much better now!!!

[highperf4x4]

With the engine idling at about 800 rpm, your timing should be no more than 10 with the vacum advance disconnected.

[mikajo39]

Originally Posted by americanmusc1e

this is Desktop Dyno, I know that DD can be up to 15% optimistic, but I have ported/polished vortec heads(this graph is with stock vortecs), so the difference should be pretty close

Quite the healthy torque curve im jealous had my 355 dynoed i made 402.6hp at 5800 rpm and 413.2 ftlbs at 3800. What cam are you running? Hows the water temp with the cylinder bore .60 out?

[mikajo39]

Psh never mind my brain is small and I didn't take the time to check ur sig for the cam haha How's that cam sound?

[americanmusc1e]

Originally Posted by mikajo39

Psh never mind my brain is small and I didn't take the time to check ur sig for the cam haha How's that cam sound?

sounds good, but it sounded better when my power valve wasn't working and the thing would barely idle.

the water temps stay about 190, I don't think I'll have any problem

[Hoffman65burb]

Originally Posted by americanmusc1e

ok, what is the idle ignition timing supposed to be(vacuum advance disconected)???? the truck runs best with about 20 degrees, is this too much???

I also had a problem with the power valve (on my Holley 4160), the motor was running rich, and the truck would idle with the mixture screws all the way in. I pulled the bowl off and looked at the power valve, then I put it back together and it ran fine!!!! It idles much better now!!!

Float probably got stuck, happend to mee too!!