This is topic choosing combo? in forum Tech Talk at Northern California Ford Owners  .


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Posted by charged306 (Member # 4761) on :
 
I'm building a new supercharged 306 combo for the street. Not sure of what cam to run? I was thinking of an e303 because of smog, but it seems to be a little small for AFR 185's? Can I pass smog with a custom cam? Its going into a 93gt.

Combo:
306 (8.8:1)(stock block)
185 AFR (box-stock)(1.6rr)
performer intake (match ported)
s-trim (8-10psi)
Shorty headers (smog)
 

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Posted by 98slowhoe 'FIFTYLX' (Member # 895) on :
 
you can pass smog with a lot of cams and lots of custom cam combos, You don't totally need carb numbers its not like the technician is gona ask to show you the cam. I would choose something other then an E cam. There are plenty of guys on here that can tell you exactly what to look for. If you can PM 93cobra he can help you out a lot.
 

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Posted by Tryin2GoFast (Member # 3166) on :
 
WHATEVER YOU DO. DO NOT RUN AN E-CAM IN THIS SETUP. IT WILL BE ONE OF THE BIGGEST WASTES EVER. Now that i can relax and take caps lock off. You can run alot of different cams. FTI could grind you a custom cam for around 300 that would make excellent numbers. There are a few off the shelf cams that make good numbers on blown apps such as tfs stage 2. Man look around. There around tons of cams that would make way better power than THE WEAKEST CAM FMS EVER MADE. AaronC and 93Pony cam help you out.
 

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Posted by AJBlackGT (Member # 3936) on :
 
Also with that combo, no matter what cam you end up getting, I would get the performer RPM intake instead of the regular performer because with those heads and an s-trim you are going to be moving a lot of air and will not need a long runner intake to help you build velocity. The s-trim will do that for you Also when looking for a super charger cam, look for a cam that has more duration and lift on the exhaust side to help get all of the air that you forced in with the s-trim out quicker. Like tryin2gofast said you can get someone to grind you a custom cam but they are a bit pricey. If you want to go that route look a FTI (Ed Curtis) or Buddy Rawls, they are both excellant choices
Andrew

[ September 06, 2004, 06:24 PM: Message edited by: AJBlackGT ]
 

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Posted by charged306 (Member # 4761) on :
 
I am not against a custom cam. I was wondering what kinds of off the shelf cams guys were passing smog with(while making good power). Also you think the rpm is better for the 185's?
 

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Posted by 98slowhoe 'FIFTYLX' (Member # 895) on :
 
I used an Anderson B-31 and I liked it, trick flow stage 1 is a good I think the stage 2 doesn't pass smog, the FMS f-cam is a good blower cam. I think its the comp 2031 that is a cam that a lot guys use, and there are plenty others that are pretty good. I have heard of guys using the xe274 or whatever it is.
 

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Posted by Fostang (Member # 3752) on :
 
If your worried about smog why not a stock cam with 1.7 rr's retarded 4* eh Jim.???
 

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Posted by charged306 (Member # 4761) on :
 
Fostang,
I don't have a cam yet...So if i have to buy one, I don't want it to be stock... Sometimes I think afr 165 might be better on a 306, maybe xe264hr w/ performer? Not sure if it will work w/s-trim. Where's the cam gods when you need em?
 

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Posted by white1990stang (Member # 2307) on :
 
put an f-cam in it. i love mine. made lots of power to
 

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Posted by 98slowhoe 'FIFTYLX' (Member # 895) on :
 

quote:

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Originally posted by Fostang:
If your worried about smog why not a stock cam with 1.7 rr's retarded 4* eh Jim.???

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I knnow that is a something alot of those guys run in some class. Pretty cheap and affective. You have to ask yourself what is a Blower cam to a turbo cam to a NA cam. A cam is a cam. Yeah some open and close at a little better time for whatever combination of HCI and power adder. you just have to find something that you think would be good for what you want out of your car? Maybe ask some people on the corral, more people to talk to there with different combos.
 

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Posted by AJBlackGT (Member # 3936) on :
 
The combo in my sig passed smog with flying colors, with the TFS Stage 1. It is also an n/a 306 though. You can usually get most tame cams to pass smog if you tune it right and the smog tech doesnt care/ notice that youve de-tuned it.
 

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Posted by Blue Oval (Member # 2548) on :
 
if u want a stock cam id be willin to give u the one i have sittin on my shelf as long as u told me the track times it made.id try the stock cam,u can always swicth it out if u dont like it.
if not id suggest a custom
 

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Posted by charged306 (Member # 4761) on :
 
white1990stang,
Whats your combo? How much power does it make?

AJBlackGT, How much power does that combo make?Also how does it feels on the street?

Seems to me a lot of people are installing cams retarded, why is this?
 

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Posted by AJBlackGT (Member # 3936) on :
 
I drive that combo everyday on the street and it runs great. Really torquey and fun on the street. I got it dynoed and tuned, it put down about 300rwhp and 325rwtq, its in a light as little notch with a 5 speed so its really fun on the street, and I have no driveability issues with it now that its tuned.
 

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Posted by AJBlackGT (Member # 3936) on :
 
As far as retarding cams, I THINK that when you retard a cam it moves the powerband upwards and gives you more hp, and a little less torque. Now when you advance a cam the powerband comes down and you get more torque. You might want to search the corral.net for this as I am not positive, so dont quote me on this. Maybe someone else could chime in and clarify?
Andrew
 

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Posted by white1990stang (Member # 2307) on :
 
tfs high ports, track heat intake, 70mm tb, f-cam, longtubes, s-trim, 1.6rr, and all the other bolt on crap. it made 433 at the wheels at only 5500 rpms. thats where it ran out of fuel. when i upgrade my rails and lines it will go all the way to 6500 and should make close to 500
 

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Posted by AaronC (Member # 86) on :
 

quote:

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Originally posted by AJBlackGT:
As far as retarding cams, I THINK that when you retard a cam it moves the powerband upwards and gives you more hp, and a little less torque. Now when you advance a cam the powerband comes down and you get more torque. You might want to search the corral.net for this as I am not positive, so dont quote me on this. Maybe someone else could chime in and clarify?
Andrew

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In 5.0 and LS1 applications this isn't necessarily true. The longer runners of the EFI manifold will produce torque by design. The air takes more time to get started, so by delaying the intake opening for when the piston is more towards TDC or on the downstroke will produce a quicker air response time in the manifold. Also running a cam of this design can allow you to run a smaller intake lobe and have it act bigger vs a bigger lobe that's advanced. By retarding it, you get the valve to close later. If both lobes have the same closing point (224 vs 232 example) then the 224 that's retarded will provide more cylinder pressure (torque) vs. the 232 that's advanced. This is because the 232 is open longer and has less time to make cylinder pressure. It's a complex subject and not easy to type right to get the point across.
 

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Posted by charged306 (Member # 4761) on :
 
Looks like you can get pretty granular w/ details of retarding/advancing cams.....All in all I think I am going to step down to the 165's and a trickflow stage 1 cam, Like AJBlackGT's combo.+S-trim. I hope the performer won't be my bottle neck. Thanks for the heads up guys.
 

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Posted by 98slowhoe 'FIFTYLX' (Member # 895) on :
 

quote:

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Originally posted by charged306:
Looks like you can get pretty granular w/ details of retarding/advancing cams.....All in all I think I am going to step down to the 165's and a trickflow stage 1 cam, Like AJBlackGT's combo.+S-trim. I hope the performer won't be my bottle neck. Thanks for the heads up guys.

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quote:

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Originally posted by charged306:
Looks like you can get pretty granular w/ details of retarding/advancing cams.....All in all I think I am going to step down to the 165's and a trickflow stage 1 cam, Like AJBlackGT's combo.+S-trim. I hope the performer won't be my bottle neck. Thanks for the heads up guys.

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quote:

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Originally posted by AaronC:

quote:

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Originally posted by charged306:
Looks like you can get pretty granular w/ details of retarding/advancing cams.....All in all I think I am going to step down to the 165's and a trickflow stage 1 cam, Like AJBlackGT's combo.+S-trim. I hope the performer won't be my bottle neck. Thanks for the heads up guys.

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I like that setup. Put the TFS 1 cam on the 4 degree retard slot. It'll run really well and pull some extra RPM's without giving up low end with the Performer maniflold.

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quote:

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Originally posted by FasterDamnit:
Run it w/ 1.7's, also... [/QB]

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What he said

 

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Posted by 2stangs69-91 (Member # 1951) on :
 
there is nothing wrong with the E-cam in supercharged aplications. In my 302 it was advanced 4 degrees with 1.7's and I managed to turn a 11.41 and trap over 124. In my new 331 I did go to a XE274 cam and I really like it so far. This is a street daily driven car.
 

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