joes68340s
Well-Known Member
Just wondering if people with this crate motor have found a better cam.
Cam options for a 380hp 360 crate motor
- Thread starter joes68340s
- Start date
-
Rolling_Thunder
Rolling Thunder
The term "better cam" is very subjective... depends what you are looking for that make it "better"... I had the 300hp crate engine years ago and the 380hp version had a much better camshaft profile - you can swap in any roller cam for an LA so your options are pretty limitless these days
What is it you don’t like about the cam?
What is it tour looking for over what you have?
Do you feel that there is a short coming to the cam?
Where would you like to improve the engines performance?
What trans, rear gear and tire size are on the car?
Cars weight, stall converter, if it applies?
What is it tour looking for over what you have?
Do you feel that there is a short coming to the cam?
Where would you like to improve the engines performance?
What trans, rear gear and tire size are on the car?
Cars weight, stall converter, if it applies?
joes68340s
Well-Known Member
67 Valiant built for autox, track days. Stock 380 hp crate motor. 4 speed 3.55 gears. Car weight 3250 tires 285x35x18.
Johnny Dart
Well-Known Member
Any idea in what cam is in it now ?
He said stock create engine so that would be the MP Hyd. roller cam, 288/292 ... I forget.... low .500’s in lift..
@autoxcuda could be of a bit help here since he auto crosses is car. He (IIRC) uses a solid flat tappet cam a good bit smaller. If you run at a track you could perhaps discuss the cam needs on such course(s)
My direction would be for a smaller cam for more torque.
autoxcuda
Well-Known Member
- Joined
- Apr 6, 2007
- Messages
- 9,057
- Reaction score
- 4,151
Troy sold a ton of those at the old Westoaks Mopar Performance.
He said they weren’t great down low, but made good peak numbers (marketing) for a low compression 9.0:1.
Most people put them in cruiser type cars, but picked the 380HP because of the high HP number (marketing was right) But they were not a motor you could slap parts on without tuning and drive to the grocery store without any additional effort.
Typical 380HP buyers would have been happier with 320HP version. Eyes bigger than their stomach syndrome.
They were a little rough idle, not cold start friendly, and took carb and combination tuning to make them flawlessly around town stoplight friendly.
Honestly, my 416 stroker has too much torque down low and wipes out the rear tire in autocross. It doesnt help for smooth driving. One of the reasons I put a M1 single plane in it.
But the higher rpm HP on that 380HP crate would be great at the track. A more modern cam swap focused on area under the curve could be if help.
I look into custom cam person because of the low compression and specific intentions.
If it’s weak, it’s out of tune or hurt.
He said they weren’t great down low, but made good peak numbers (marketing) for a low compression 9.0:1.
Most people put them in cruiser type cars, but picked the 380HP because of the high HP number (marketing was right) But they were not a motor you could slap parts on without tuning and drive to the grocery store without any additional effort.
Typical 380HP buyers would have been happier with 320HP version. Eyes bigger than their stomach syndrome.
They were a little rough idle, not cold start friendly, and took carb and combination tuning to make them flawlessly around town stoplight friendly.
Honestly, my 416 stroker has too much torque down low and wipes out the rear tire in autocross. It doesnt help for smooth driving. One of the reasons I put a M1 single plane in it.
But the higher rpm HP on that 380HP crate would be great at the track. A more modern cam swap focused on area under the curve could be if help.
I look into custom cam person because of the low compression and specific intentions.
If it’s weak, it’s out of tune or hurt.
Last edited:
joes68340s
Well-Known Member
I only asked about the cam as thought maybe there were people still running them, crate motor that is. I have a 390 stroker set up for 4 speed. Will be installing. Just wondered about cam for another project.
autoxcuda
Well-Known Member
- Joined
- Apr 6, 2007
- Messages
- 9,057
- Reaction score
- 4,151
I think it’s a good question. I think there’s potential in a cam swap.
Last edited:
It's a pretty well match package. I'd run it like it is.
If you take the 300 horse motor which has a stock 5.9 cam in it and you put in the 380 horse cam and change the intake and it gives you 80 more horsepower I would say the cam is working pretty good.
Just My humble opinion which I personally highly value.
Just My humble opinion which I personally highly value.
I personally plan on using the cam that RAMM recommends in this thread.
380hp crate engine specs
380hp crate engine specs
Been thinking about a 396" stroker myself. 360 block with a 3.79" crank. Is this how you're doing it? 318 base with a 4" crank?
BTW, Joe. You on instagram? I'm @5_points_racing . I don't have any Valiant content on there but it's coming very soon. Reiss Racing is doing the metal work now to fit 315's in front with a 335 rear.
joes68340s
Well-Known Member
Have you picked wheels for it. Ive been wanting to do a track day but I cant get the tires. Tire Rack dosent know when they will be in, somewhere in late spring. Maybe.
I just added you on IG. Can’t wait to see pics of that valiant!
Forgeline ZX3. I came up on a set, NIB, from a mustang guy. They were in 18x9 and 18x10, staggered set. The 10's are working in the front and we will rehoop the 18x9's to 18x10.5 to go in the rear. The prior owner of your car has the contacts to get new barrels for these wheels. Falken is the plan but really looking for 335 and g-Force Rivals are the only option for a 200TW tire in 335/18". The 10.5 will accommodate a 315 and a 335. Was looking at going as wide as 18x11 but 10.5 is an in-between that will fit either size.
Note that the links for Lunati's cams don't work anymore and you can't even find the cam cards on their site (!?)
IIRC one of their HR cams was slightly more lift at 1.6 but slightly less duration at .050 than the factory 380 HP cam.
IIRC one of their HR cams was slightly more lift at 1.6 but slightly less duration at .050 than the factory 380 HP cam.
Back to this 390 engine, Joe. I'm curious! I have been wanting to spec out a roadrace engine. Full oiling mods, dry sump coleman pan ( Dry Sump Pan, Steel, Chrysler 318-340-360 ) Trickflow heads, Morel hyd. roller lifters, Morel 3.79" crank. Port injection. What block? 340 or 360? Maybe try to find an R3? Ritter?
I'm having a 340 with a 4" stroker built right now, should be dyno'ed soon. It's going in the Valiant but looking at building this dream engine, later, and putting it in the Valiant and putting the 340 stroker into the 'cuda.
Right now the 'cuda has a 360/408" with a D1 Procharger on it. I would freshen and sell it OR put it in my D100 if I don't sell it. I would finally have the room to put an intercooler on it because there is no room for an intercooler on the 'cuda. Lotsa room in a D100.
I'm having a 340 with a 4" stroker built right now, should be dyno'ed soon. It's going in the Valiant but looking at building this dream engine, later, and putting it in the Valiant and putting the 340 stroker into the 'cuda.
Right now the 'cuda has a 360/408" with a D1 Procharger on it. I would freshen and sell it OR put it in my D100 if I don't sell it. I would finally have the room to put an intercooler on it because there is no room for an intercooler on the 'cuda. Lotsa room in a D100.
Here’s the one I plan on running. RAMM used the long snout version. I plan on using the short snout version in case I decide to put the magnum timing cover back on.
Voodoo Hydraulic Roller Cam - Chrysler 273-360 (W/ Short Snout) 258/264
The 68 Valiant I bought own did the same he put in 2.96 gears but bought the 380hp engines, which definitely doesn’t make it a rocket around town, have to drive in 2nd gear under 40 mph or it lugs.
I think the cam works really well, especially with the stock magnum valve lift limit.
I was thinking of going a bit smaller like a 265 .500 mild roller or drop in a set 4.10-4.56 and stick with what’s there.
joes68340s
Well-Known Member
Im running 18x10s square with Hankook Ventus 285x35x18s. I could fit an 18x11 wheel square But I prefer the 285s. Now I have to wait for Tires. I am actually thinking of putting the car up for sale as I have been focused on My Drag car.
Dang. Was RT615+ supposed to be made in a 335 ?
-
