318 w/ 360 heads engine build

[68cuda92stealth]

Alright i have a 318 roller engine. i spun a bearing in the motor. i bought a crank for 50 bucks and had it polished. i am puttin new rods and pistons in. i had a set of 360 heads i ported and polished myself to match the headers. i have a 750 edelbrock carb with an edelbrock torker intake. any suggestions on a cam or other parts i could put this motor together with. i want a cam with a choppy idle but will move when i step on it. also i have a 3 speed manual tranny im droppin with it. its goin in my 68 cuda

[RacerHog]

What roller cam did you have with the 318???

[68cuda92stealth]

the factory roller cam that was in it. its outta a newer car but it was the stock cam

[RacerHog]

I say
474 intake and exh.
233I / 240E .050
110* Lobe center
9.8.1 CR
34* timing
2.02Intake Valve
1.60 Exh, Valve
Mild port
1.6 rocker
Victor intake
650DB Carb

375HP
460FP TQ

Just my 2 cents

Keep us posted on the progress....

[cudabob496]

Call the cam manufacturer tech lines and ask them as well. They were very helpful to me.

[rumblefish360]

get in touch with Hugesracing and ask for a Hyd. Roller to slam in and rock and roll with.
Depending on gear ratio and stall converter, 236 - 244 intake duration

[RacerHog]

Well theres 2 close ones......

[68cuda92stealth]

awesome but i dont have an automatic tranny. its a 3 speed manual. can i have a higher rpm cam then?

[rumblefish360]

It really depends on what this is for and how it will be driven.
You really have not given any specs worth making a good choice on, just general one for a general answer.
(With my luck,,,,we would have all gotten a great choice by accident for him)

What the cars, weight, gear ratio intended driving style RPM bracket in cruise/range/red line thoughts, drag circle, general performance.
Is there a time slip number sought?

These questions need to be answered instead of generating more questions like "Can I get a bigger cam"

(OH, IMO, I'd dump that 3 spd for a 4spd right quick. You'll be alot happier in the long run. Food for thought, been there done that.)

[RacerHog]

68cuda.......Rumblefish is spot on......When you shoot very general info...Your get something shot from the hip, Like what i gave you.....I All it was was a good step in the right direction....However Rumblefish is right all the way....You need to give all the info on what you have and what you are going to do with it.....Then start your parts list.....You can Go mild to wild, Depending on how big your wallet is......
Keep us posted

Hog

[hotrod7043]

ANd use a Dual plane intake you will be alot better of on the street.

[rumblefish360]

I have a TorkerII and a RPM air-gap. The RPM rocks over the TkrII. But, if your OK with it, use it. Also, it isn't so bad if your going to have a high stall converter and skip over 4000 rpm. That makes it kind of tuff for the street, but it'll do.

The TrkrII is a good intake on the cheap. I wouldn't bother with it new anymore.

OH, are you going to zero deck the pistons? IMO, I think you should. All that 360 stuff on top of the teen, it's gonna need some squezze in the cylinder head.

[68cuda92stealth]

Ok i have a stock rearend out of a 1971 duster. had a 318 in it. anyone know the gears it might have?

[68cuda92stealth]

Also It is the regular torker manifold not the torker II. I have an A230 Transmission 3 speed manual. i am running 215 45 R17 tires... i dont want to spend a whole lot that is why i am using parts i already have like the tranny and motor and heads i redone myself. I am however lookin to get a timing gear and a cam to give me the sound. If i dont get the sound thats alright as long as i have the power! I want torque! it has edelbrock headers with 2 1/2" exhaust runnin into 3 1/2" tips! Any other info wanted?

[68cuda92stealth]

A friend told me to keep the exhaust and intake lift between 260 and 270 or it will load up at the stop lights. I am using the car as a weekend cruiser and occasional strip car. I would like to see what it runs on the track

[hotrod7043]

2.76or2.94 7/1/4 aint worth even messing with scrap it.

[68cuda92stealth]

i dont have the money to get a different one.

[rumblefish360]

You will after you break it. And it will happen sooner than you think.

[hotrod7043]

Well ya cant be messing with cars and playin with no Money. that Rear is the same as ya got in car now, unless the car was A 340 or 383 car. You Want the sound of a geardrive , not needed and TORQUE IS HARD TO BUILD OUT OF A 318. put the money in A 8/34 and a 4spd od trans.

[rumblefish360]

A friend told me to keep the exhaust and intake lift between 260 and 270 or it will load up at the stop lights.

Duration ratings are advertised I assume. I don't understand "Loading up"
IMO, a zero decked 318 with 360 parts up top could use a a cam around at least 230 intake duration with a decent set of rear gears like 3.73 or beter and a small stall. This would make for a good street machine around 400 HP when used with a decently set of preped heads.

I didn't know Edelbrock made headers. Thats a new one on me. 2-1/2 inch exhaust pipes are good to 400 and change HP. So far, your a good 100 short of that on a great day. We'll fix that.

Whos got a link handy to that 400 HP magnum headed 318 hanging around. That would be a good build to follow. Easy, simple, powerful.
Timing gears don't give sound, cams give the tune, headers and mufflers by far give the note and how bass-ie it is or gets.

I'm having a feeling your mighty new to this.

[hotrod7043]

Rumble he aint got money for 8/34 , but has it for a Gear drive, a magnum head swap or that buildup is for us experienced guys.400 hp out of a318 is getting there.ya gotta admit it, i read that article and ya know i didnt believe it. a 14.sec A body with a 318 is really good .ya gotta admit that.

[MOPEkid]

Yeah, what exactly are you trying to do? If you get a cam for the chop-chop idle, it's going to run like CRAP on the street. I have a '70 Duster with a 318 too, and all I'm going to do to it is a 4-barrel (Carter ThermoQuad on 360 truck manifold) and dual exhaust off the stock manifolds. I was thinking about building up a 318, but it's just not worth it. I might be getting a good deal on a 360 "core" which I'm going to top with ported Magnum heads and other goodies.

And FYI the only noise a timing gear will give you is a loud "whine", which will be cool at first but no doubt will get old REAL fast. And go ahead and try running that 7-1/4" rear end with any amount of power above stock, you'll step on the gas and all of a sudden... BANG!!! Don't try to fool yourself. If you don't have the money to hotrod your car properly, then DON'T DO IT.

[hotrod7043]

Exactly.a the 340/360 factory cast iron intake aint a bad piece Stokers can run 10secs with one. this Kid need acouple Ofthe of performance books. i had a 77 318 Aspen r/t with a 73 tg manifold duals and a 8/14 3.21 rear ran 15.20 and got 20 mpg with 73 400 tq that was played with.of course i de smogged it to0.Was wifeys car she was pissed when i wrecked it. iwas too

[rumblefish360]

Well, he wants to bad and thats a great start, desire!

Build up your army (Bank roll) and get set for war (Learn and read books) for the fight is yours if you want it. (Theres plenty of time to do what you want, you just need to get set up first.) Plenty of brand X cars to run against. There not going anywhere. They will be waiting, and so will be to help out.

I worked my buttoff when I was younger with the soul purpose of building a car. It seemed like forever. It was worth the wiat. It's just no one told me how addictive it is and here I am 23 years later still doing the same thing, saving money and stock piling parts for the next build.

[68cuda92stealth]

Yes i decided not to get the gear drive and i have an 8 3/4 shortened i gotta tub out my trunk tho cuz it was shortened. i sold it to my bro but he hasnt used it in a couple years so i could drop that in. i had the stock inline six motor when i got the car but i tore it out with the 360 i put in it. i found another rearend outta another cuda. tore it out so i decided to take the rearend outta my duster. its done good till my motor went out. yes i am new to engine buildin as my dad has always been here and he is not here anymore so im doin this alone now.

[hotrod7043]

Calm down now son , whats the measurement on the 8/3/4 thats shortened ? backing plate to backing Plate?

[68cuda92stealth]

Also i screw my idea with the choppy idle. i want power and yes im stickin with the 318. i will get that 8 3/4. Usin the 360 heads!...I will try and find a 4 speed. if i cant i gotta use the 3 speed. the headers are hooker not edelbrock. i was thinking of my girlfriends camaro ones. any ideas on a cam. roller or not. lifters? Rockers? should i go with roller?

[68cuda92stealth]

also any ideas on water pump? are electric good. i want an aluminum radiator. i have till it starts warmin up to save some cash.

[hotrod7043]

THE a/c waterpump works good, you are throwing alotta ? with no budget.use 360 heads a 270 comp cam or a 274 isky mega cam they pull well and idle good, i used a wiennd steath on my sons 340 duster, and a Dual pattern Utra Dyne 278/284 its got a nasty idle and it pulls like crazy from 2000 to 6500.and the car has a 780 vac secodary Holley, but its a 345 inch motor, and 9.5 to 1.

[rumblefish360]

yes i am new to engine buildin as my dad has always been here and he is not here anymore so im doin this alone now.

Sorry to hear about Dad not being with us anymore. However, your not alone anymore. We all here would be happy to help point you in the right direction and such.

Welcome to the brotherhood.

I would contact a machinest and get to know them a bit. It can not hurt to ask them if you could stick around alittle bit and learn something. I did this at local garages when I was your age. (41 years now) It worked there and then, it could very well work for you. I don't see why not.

On a cam, the XE line from Comp Cams is very good as well what was mentioned above. Go with a dual / split pattern cam to help with the exhaust.
There ground on a 110 so it will have a good muscle sound to it.

A standard water pump (AKA stock) is all your going to need with a clean rad for cooloing. MoPar also has a HP unit. Purchase that one if cooling is borderline with a good clean flowing rad. Skip the added expense on the aluminum rad. It really isn't needed. Otherwise, you'll be surprised how well stock parts can perform.

IMO, the 318 should use a zero deck piston with the 360 heads and there large chambers. Otherwise, the compresion ratio is likely to drop into the high 7's.
Use 360 heads with the smaller 1.88 intake valve, not the 2.02's. You'll retain hi velocity in the ports for a snappier throttle response, good fuel atomiztion for a better and more complete burn for power. This will add torque, something a short stroke engine can use.