cam question

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jride1999

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the guy that rebuilt the motor in my duster said car will run a low low 15 high 14 easy.he said he put a lunati voodoo cam in,he doesnt no specs on it.is there anyway i can find out which one it is? i wanna run a dual plane air gap intake an a holley 650dbl,i no if the cam doesnt match rest i can loose power.Can anyone help me out thanx its a 318 block
 
sorry i dont no nothn about the engine sept he said has a voodoo cam intake says victor an has hooker comp headers im sorry thats all i no,if i find numbers on head can u tell by that an were r they?
 
sorry the intake says holly street dom an carb says carter afb comp series,i looked for numbers on side an front but nothn
 
Oooh, single-plane intake + 318 = bad idea. First find out what heads are on that thing then swap that Victor A.S.A.P. for a Performer or Performer RPM.
 
He changed to street dominator. Need a micrometer and base to measure lift at the rocker and a degree wheel for duration. not for the amateur. or pull the cam and look for grind numbers
 
Pull a valvecover off and see what numbers are cast into the runners,then we can go from there...
 
The carb numbers, if an OE carb, are on the carbs pad. Look at the front and rear if need be. Otherwise, the throttle plate size would be needed to know. I'd bet it a 600.

A cam of approx 214/218 intake and similar exhaust duration or a slight bit more will make that power for that time in the 1/4.

Like my Crane, 216/228 @ .050 w/.454 / .480 lift

(Stroked340, bet there stock 318 heads, no mods.)
 
I am guessing that if it is a stock compression, stock head 318, it would need a warm cam of the specs Rumblefish displayed to run a high 14 or low 15s. A better converter and gears of 3.21 or numerically higher should seal the deal, possibly even a bit better. I run consistant low 15s with a stock converter in a similar combo 318, with a XE268 cam. The converter is definately the ball in my chain right now. It is a stock 1400 rpm unit. I plan to up to 2300-2500 and it should wake it up even further. 18-19 mpg on the hwy out of this.

I am guessing he has open chamber 318 heads.
 
I think very much we have very similar builds you and I MOPARJ.

Indeed a higher stall, not much, would be good. That tranny I have is a lock up '79 model. 3.91 would get this pup moven well. My finish line RPM was never exactly noted, but IIRC, somewhere around 5000, give or take.
Not to mention a bit more compresion. That '79, 318 of mine is dead on it's heels with probably less than 8.0-1 though advertised at 8-1 when new.

I ran @ ATCO on the MoPar meet day a 15.14 @ 89 without a tuned distrib or carb. When I tune those up/dail those in better on a slightly warmer day, it'll run the 14's.
 
I think very much we have very similar builds you and I MOPARJ.

Indeed a higher stall, not much, would be good. That tranny I have is a lock up '79 model. 3.91 would get this pup moven well. My finish line RPM was never exactly noted, but IIRC, somewhere around 5000, give or take.
Not to mention a bit more compresion. That '79, 318 of mine is dead on it's heels with probably less than 8.0-1 though advertised at 8-1 when new.

I ran @ ATCO on the MoPar meet day a 15.14 @ 89 without a tuned distrib or carb. When I tune those up/dail those in better on a slightly warmer day, it'll run the 14's.

Yeah, I have a 73 model with 8:5 advertised. I believe TRW cast replacements with moly rings were used on the rebuild. I think I would feel a difference with a 2000 stall. I am running the lower performance square bodied Holley 600 single feed with manual choke. I have not messed with the jets and it may be a smiggin' lean, but it burns clean and gets good milage. I am runnin 3.21s in a peg leg 8 1/4. Mainly want to change the tc to help out the mid range acceleration, especially through second gear. From a standstill start, it pulls hard through first up to 5,500. A bit better acceleration at hwy speed would be great too to inorder to make up for the slight loss of low end torque.
 
I'm getting slightly less mileage with my set up. About 1 - 2 mpg's.
I have a Holley ready to bolt on for chits and giggles and comprao at the track.
It's a 4160 convetered to a 4150, E choke and vacuum secondary.
Stock engine just taken aprts to have a look. It's gettin tired, but not to bad.
Rebuild soon.
 
so best bet is pull cam out an check for numbers?this is my first car were building im new to this stuff,ive helpd friends build cars,but thats it thanx
 
You may not find numbers on the cam. Some companys stamp the numbers on them, others paint them on, others still yet will use a paint strip for general catogory.

(All MP "Purple" cams are painted purple just to say there MoPar cams.)

I would select a new cam in the performance area you want to be in before you just take it out to check on it. This way you know where you are instead of guessing. Though I'd bet alot on it is a similar speced cam like mine or MOPARJ's.
(Of course knowing the rest of your set up may incourage me to bet the wallet on it. LOL! )
 
ok thanx,what whould b a good set up(meaning cam, intake,and carb) rear axel is a 8 1/4 dont no what gears r in it, were building the car to cruse in, an weeknds at drag strip with my son(father an son time)
 
That sounds great. 14's sound like a good starting point with your son? How old is he?
 
i pulled valve covers off numbers say 3769973 i looked them up an says 1.78 intake an 1.50 exhaust la heads.on top of carb #8867 on bottom base#9605s an 2104.Im not trying to build all out race car,just something we can take to track,my son is 4 an daughter is 10 thanx for ur guys help
 
I would buy an RPM Edelbrock at a swap (the 318/360 ones are dirt cheap all the time) and buy the HP book on tuning Carter carburetors. It sounds like it's a pretty good base for a father/son/daughter deal. Lose the idea of a double pumper for a while, and spendyour money on gears and an 8 3/4 if you plan to race/grow it.
 
i have np with way runs now an all,just wanted to try get some more hsp out of it. im gona get the book on buildng mopar engines today an go from there
 
I would not bother pulling the engine apart to find out what cam it is. If it runs well, just leave it alone, until you decide to change cams. You can sort of get an idea of what kind of cam it is by the vacuum at idle, do you have that figure ?
 
i pulled valve covers off numbers say 3769973 i looked them up an says 1.78 intake an 1.50 exhaust la heads.on top of carb #8867 on bottom base#9605s an 2104.Im not trying to build all out race car,just something we can take to track,my son is 4 an daughter is 10 thanx for ur guys help

Those are '75-'76 smog motor heads..you deffinately DON'T want to be running a single plane intake,your best bet is a performer intake it has the small ports for 318 heads,the performer rpm is designed for 340-360 ports..For comparison a buddy of mine is running a '77 smog motor 318 with nothing more then a performer intake,carter carb,comp cams .477/.480 cam,and a 8 3/4 w/3.91's,his best time to date is a 14.9...
 
9605? Sounds like a 600 cfm Edelbrock. IIRC, I think it a manual choke, non-emissions carb.

I'd follow moper's advice on rear and gear upgrades for now. When you decide on a engine package or a simple cam upgrade, then go from there.
 
Those are '75-'76 smog motor heads..you deffinately DON'T want to be running a single plane intake,your best bet is a performer intake it has the small ports for 318 heads,the performer rpm is designed for 340-360 ports..For comparison a buddy of mine is running a '77 smog motor 318 with nothing more then a performer intake,carter carb,comp cams .477/.480 cam,and a 8 3/4 w/3.91's,his best time to date is a 14.9...

Hmmm, depending on tuning, I would think somewhat better times are possible, considering the gearing that is in it.

Back to the original poster, I wouldnt tear it apart. I am betting that it is a fairly warm hydralic cam (at least warm for a stock compression 318). Just run it and enjoy it.
 
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