Previous Thread
Next Thread
Print Thread
1990 360 Question.....Differences?? #2275273
03/24/17 10:38 AM
03/24/17 10:38 AM
Joined: Oct 2007
Posts: 2,808
Wisconsin
wkroncke17 Offline OP
master
wkroncke17  Offline OP
master

Joined: Oct 2007
Posts: 2,808
Wisconsin
All - I've been full of questions lately, I sure do appreciate all of the assistance!
Next up is the 1990 360 Engine.
Is this considered an LA?
What are the differences to a regular (say 1977) LA 360 - other than the roller cam?
I have the chance to pick one up reasonably, and may just do it if it helps my build.
I already have a Comp Cams Hyd. Roller Cam - is this a direct fit?
Any other info would be greatly appreciated!!
Thanks again guys!

Wally.

Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275292
03/24/17 11:22 AM
03/24/17 11:22 AM
Joined: Nov 2003
Posts: 10,228
Colleyville
3hundred Offline
I Live Here
3hundred  Offline
I Live Here

Joined: Nov 2003
Posts: 10,228
Colleyville
That's a great engine for pre magnum days. Factory rated 190 hp, the best small block heads (302 cast numbers?)save for the magnums. If you want to run a standard mechanical fuel pump you'll need to source a camshaft with the eccentric provision.

I had a '91 360 w/ Doug Thorley tri y's in my '82 Ramcharger with an A500 trans and 4.10 gears in the 9.25 differential. Pretty danged impressive.

Robert


'68 Fury Convertible
'69 300 Convertible
'15 Durango 5.7 Hemi
'16 300 S Hemi
Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275302
03/24/17 11:33 AM
03/24/17 11:33 AM
Joined: Oct 2007
Posts: 2,808
Wisconsin
wkroncke17 Offline OP
master
wkroncke17  Offline OP
master

Joined: Oct 2007
Posts: 2,808
Wisconsin
So is everything else from an LA an automatic bolt on?
I plan on running an electric fuel pump.
What was the standard transmission that came with these?

Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275318
03/24/17 11:53 AM
03/24/17 11:53 AM
Joined: Nov 2003
Posts: 10,228
Colleyville
3hundred Offline
I Live Here
3hundred  Offline
I Live Here

Joined: Nov 2003
Posts: 10,228
Colleyville
Since you're going to run an electric pump, yep, good to go.

Transmissions would have been A999, ( I don't recall for certain what application might have used the 3 speed, if any, memories are getting fuzzy again) A518 or NVG 4500 if in a 3/4 or one ton. 46RH nomenclature didn't come into use until 1994?

Robert


'68 Fury Convertible
'69 300 Convertible
'15 Durango 5.7 Hemi
'16 300 S Hemi
Re: 1990 360 Question.....Differences?? [Re: 3hundred] #2275320
03/24/17 11:56 AM
03/24/17 11:56 AM
Joined: Nov 2003
Posts: 10,228
Colleyville
3hundred Offline
I Live Here
3hundred  Offline
I Live Here

Joined: Nov 2003
Posts: 10,228
Colleyville
Now I'm confused again, NVG 4500 or Getrag 360 behind small blocks? Getrag was Diesel only, wasn't it? work

I think it was the 4500 though...

Robert


'68 Fury Convertible
'69 300 Convertible
'15 Durango 5.7 Hemi
'16 300 S Hemi
Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275327
03/24/17 12:05 PM
03/24/17 12:05 PM
Joined: May 2003
Posts: 15,487
Florida
S
scratchnfotraction Offline
I Live Here
scratchnfotraction  Offline
I Live Here
S

Joined: May 2003
Posts: 15,487
Florida
that is a better building block for 360

it is same as older LA 360 sav for the roller cam block which is more sought after.


snatch it up fast!

I am still looking to find me one. even pre-mag 318 are getting few and far between with magnum engines dime a dozen.

Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275335
03/24/17 12:19 PM
03/24/17 12:19 PM
Joined: Oct 2007
Posts: 2,808
Wisconsin
wkroncke17 Offline OP
master
wkroncke17  Offline OP
master

Joined: Oct 2007
Posts: 2,808
Wisconsin
Just to make sure, will the Comp Cams Hyd. Roller drop right in?
How are the factory roller lifters?
Pretty sure I'll scoop this one up.

Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275489
03/24/17 06:13 PM
03/24/17 06:13 PM
Joined: Sep 2007
Posts: 14,889
up yours
Supercuda Offline
About to go away
Supercuda  Offline
About to go away

Joined: Sep 2007
Posts: 14,889
up yours
302 head castings only came on 318's and they are closed chambered swirl ports.

The 90 360 would have an open chamber swirl port head, usually called the 308 head.

Both heads, meh. While they might be considered the best of the production LA heads Magnum heads are much better.

But yes a 1990 360 is an LA. Will the Comp Cams roller "drop in"?

Dunno, Mr. Wizard hasn't told me which Comp Cam you have. If it's an LA roller then yes and if the factory lifters are good they will work with it.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275500
03/24/17 06:27 PM
03/24/17 06:27 PM
Joined: Oct 2007
Posts: 2,808
Wisconsin
wkroncke17 Offline OP
master
wkroncke17  Offline OP
master

Joined: Oct 2007
Posts: 2,808
Wisconsin

Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275507
03/24/17 06:42 PM
03/24/17 06:42 PM
Joined: Jan 2005
Posts: 12,406
Kalispell Mt.
H
HotRodDave Offline
I Live Here
HotRodDave  Offline
I Live Here
H

Joined: Jan 2005
Posts: 12,406
Kalispell Mt.
No a999 trans behind a 360 in 1990.

No 302 heads, they are the 308, big ugly open chambers, only difference in that and all the older 360 heads is the big PR hole (limits porting) and the slightly better exhaust port.

The factory roller lifters are fine for most hydro roller type builds.


I am not causing global warming, I am just trying to hold off a impending Ice Age!



Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275518
03/24/17 06:56 PM
03/24/17 06:56 PM
Joined: Sep 2007
Posts: 14,889
up yours
Supercuda Offline
About to go away
Supercuda  Offline
About to go away

Joined: Sep 2007
Posts: 14,889
up yours
Lotta lift on that cam you have compared to stock. You may have lifter to lifter retainer issues. Since they really can't make the nose of the cam longer they have to make the base circle smaller, I would mock it up and make sure the lifter doesn't drop down so far as to come out of the factory lifter retainer setup. Don't know that it will, don't know that it won't. Do know that if it does you want to find out during mock up and not at 6000 rpm.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: 1990 360 Question.....Differences?? [Re: wkroncke17] #2275525
03/24/17 07:05 PM
03/24/17 07:05 PM
Joined: Jan 2003
Posts: 16,376
D
dogdays Offline
I Live Here
dogdays  Offline
I Live Here
D

Joined: Jan 2003
Posts: 16,376
Block, crank, rods good to go.
Pistons there are better choices especially if you keep the heads.
Heads either 308 or 574, the same head with open chamber. Intake flow is good, exhaust the best of any LA head.
Camshafts are hydraulic roller and yours should slot right int. New lifers may need some grinding on the heads. But everything should cross right over.

Your cam selection tells me you need compression and gear and converter. It's big for a stock style engine on the street.
Cam requires the correct valve springs.

R.







Powered by UBB.threads™ PHP Forum Software 7.7.1