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New guy here..first mustang, although I have some help locally.

looking for some help from those who know more than me. I have been around motors an other mustangs for years ..and I can get myself around an engine bay decently..but this is my first mustang and I am putting this thing together faster than I can learn.

so..my car: 88 GT hatch. t-5, with 3.73 gears.

so far: engine builder is putting together my DSS forged 331 balanced stroker bottom end. 10.5:1 compression. main girdle.

On the top, I already found some used AFR 165 heads and 1.6 rockers locally..box stock. I have an unported gt40 (well..2001 explorer) intake, that will haev some work done to the lower. I assume I will need something larger, but that might be 6 months down the road. (off topic, but edelbrock rpm vs track heat vs holley systemax, thought?)

My goal: this is a weekend only car. will rarely see a track, mostly for good fun on the street...cruise nights..sometimes some interstate travel to car shows etc. etc. (wont lie..some late night street racing might happen). I want the sound and feel of a 10.9 second car, but that is still streetable and will hopefully hit a high 11 with good tires...so I guess a car that is on the edge of feeling like a track car, but is well mannered enough to spend all its time on the street.

sooooo...my cam choice. I called comp twice..and got 2 different suggestions:

COMP Cams 35-518-8
COMP Cams 35-522-8 (this guy said the first guy was wrong and I need AT LEAST this much duration because of the compression..huh?)

I was originally going to run a trickflow stage 2..but I feel like comp is a more reputable cam company and I should at least take a suggestion from them over me just throwing a TFS stage 2 in because others I know have done that?

Anyway...looking for thoughts and opinions from those in the know? Is the bigger cam too much for my AFR 165? too high of a power band for a strret only car? (I dont want some slug up until 5k RPM and then turns into a speed demon, that makes for a horrible street car). I think DSS suggests not revving this bottom end past 6500..it will rarely see that as I dont feel safe past 6200 probably? ( i could be wrong..if someone can tell me that the standard DSS forged kit with i-beams can hit 6800RPM all day long then let me know, that could change my opinion). I could go the safe route with the smaller cam, but I want a nice hard choppy idle..obviously not at the expense of completely screwing up the combo with a wrong cam or making it not streetable..but if we are talking a few HP either way then I'll take the added "bark" of the bigger cam.

And finally. Before anyone comes in with "call such and such and get a custom grind"...I get it, no cam is good enough unless custom ground. These parts are very common..and you cant tell me that some company hasnt made grinds for this combo a million times and the grind is now part of their normal inventory. How many different ways can a custom grinder make a cam for a combination that probably exists in a thousand other cars...I am not the first guy with this setup.

Unless someone can offer me proof that my car with run 12.8 at best, and run like ****, with a OTC cam vs a ustom grind...please dont bother telling me. I understand I might give up 5-10 HP with an OTC cam..but if that means my car goes 11.9 and not 11.8, and I save 200 bucks...I am fine with that.


Thanks guys.
 

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your going to choke the engine with AFR 165 and track heat intake....from what Ive been told strokers need a 185 head or bigger. As for the intake the holley systemax may be an okay choice, I'm running a trick flow R intake on my 331. its not done yet so i cant report on how well all parts work together. as for the cam you should get a custom cam, call up a good cam company and tell them all your specs and what you plan on doing with it. but buy all your other parts first that way you can give them an accurate description of what you have

you need to think past a 302ci motor cuz thats the parts you thinking of installing. like many people have said....302 parts gets you 302 power
 

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Discussion Starter #5
your going to choke the engine with AFR 165 and track heat intake....from what Ive been told strokers need a 185 head or bigger. As for the intake the holley systemax may be an okay choice, I'm running a trick flow R intake on my 331. its not done yet so i cant report on how well all parts work together. as for the cam you should get a custom cam, call up a good cam company and tell them all your specs and what you plan on doing with it. but buy all your other parts first that way you can give them an accurate description of what you have

you need to think past a 302ci motor cuz thats the parts you thinking of installing. like many people have said....302 parts gets you 302 power

well...I already had the 165 heads. I respect your input, but I have heard otherwise on NEEDING 185 to hit my goals of maybe 425 flywheel horse. I hope I am not wrong, but I will let you know when it is together.

I'd like to hear how you like that intake..i can look into that one.

As far as the custom grind, based on my goals, budget, and opinions stated above...I just dont think I need a $400 cam.
 

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Ive havent priced cams but isnt the difference between a custom and normal cam about $150
 

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Ive havent priced cams but isnt the difference between a custom and normal cam about $150
Looking at these anderson cams...and yeah, thats about right.

I know it doesnt sound like much...but I am on a very strict budget with almost every other part I need accounted for and its going to be tight. Plus..these particular comp cams are plentiful and I can probably pick up a used one local, meaning I might save more like 200 bucks or more vs custom grind.

Gotta be someone on here with a setup similar to mine and experience with these comp cams? especially since these were suggestions from comp themselves based on my parts.....unless comp just throws parts numbers out no matter what the setup.
 

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Measuring crank hp is pointless. With a tfs intake, afr 185s.... being generous, and a ots grind other then maybe talking with anderson = 330 rwhp, 400 or so crank and prob 13.1s at 105 because the power curve is going to dive down at 5000 due to the restriction of the top end.
 

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Measuring crank hp is pointless. With a tfs intake, afr 185s.... being generous, and a ots grind other then maybe talking with anderson = 330 rwhp, 400 or so crank and prob 13.1s at 105 because the power curve is going to dive down at 5000 due to the restriction of the top end.
So you are suggesting what changes to meet my goals?
 

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Heads. Those heads are going to be brutal on a stroker motor.


On a side note. Why a 331, and not a 347?



Please, for the love of God don't say anything about burning oil, or engine life.
 

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Discussion Starter #11
Heads. Those heads are going to be brutal on a stroker motor.


On a side note. Why a 331, and not a 347?



Please, for the love of God don't say anything about burning oil, or engine life.
Well...lol..I guess my info is dated. Heard a lot about 347 putting way more stress on a block because of rod angle,and not being as durable?

So the afr 165 have GOT to go...need 185? DSS seemed to think they would be okay as long as I wasn't trying to make a 10 second car...but they could have just bee. Saying whatever I want to hear as long as I was buying their kit?

Still no thoughts on those cams?
 

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My bro-in-law is running a flat top 331 with afr 185's, the (518) Comp XE274HR cam with holley intake. His runs great, I think that would be an excellent cam for the set up you have. The stage 2 trick flow has similar specs and should work well also.
 

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Thats a lie, if your engine builder told you that, find a new one... he can't build engines.

If your budget is decent go with a trick flow head, a custom cam, or call anderson. They prob have a sufficient cam for your combo.
 

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Yeah, those rumors still make the rounds, but its just not the case. Lots of people run the 347s with no issues.

The AFR 165s are really too small for a 302, so they're definitely small for a 331 or 347. I would go with at least 185s. If you run the 165s, you'll be at the point that you could save money on the stroker kit, and spend money on a good H/C/I for the 302, and it will make more power than the 331 would.

As far as the cams go, I'd have to look those numbers up, and just haven't had a chance. But be sure you understand, that there is a lot that goes into cam selection, and not many people know the first thing about spec'ing a cam. I bet if you call Comp, you'll get a third answer on a cam. That's the way those guys are...lol
 

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Heads. Those heads are going to be brutal on a stroker motor.


On a side note. Why a 331, and not a 347?



Please, for the love of God don't say anything about burning oil, or engine life.
I hear this dumb **** daily, lol. Well said!
 

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COMP Cams 35-518-8
COMP Cams 35-522-8 (this guy said the first guy was wrong and I need AT LEAST this much duration because of the compression..huh?)


Thanks guys.
First cam choice, save a bunch of money and buy the TFS stage 2. Second cam, a little large for your heads. If you are going to use your existing heads, stuff a stage 2 tfs cam in it, and be happy with it. It'll sound good and make good power up to about 5200, then sign off. Save up and buy a good set of heads, and intake, then swap to a cam that goes with that combo. Doesn't matter what head you have with that restrictive intake. I like the systemax out of the three you mentioned of changing to later.
 

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Discussion Starter #17
Good info from a bunch of people. I have some responses on the different subjects:

1. As far the 347 vs 331. Looks like my info was simply dated..you live and learn. The kit is already bought, and installed...so too late on that...lets move on.

2. I understand I need a bigger intake...unless someone wants to give me one for free, It has to wait a while. Let's just ASSUME I will have a performer RPM, RPM2, or systemax at some point.

3. As for the heads...I respect everyones opinion. The info I have gotten from DSS racing, Comp cams, AFR, AND a local engine builder with 20 years of experience is that my goals of a 12.0 car are right at the limit of my heads. To be safe, I could go with a 185..but that is gonna be another huge expense over budget at this point, and it sounds like I can nail my goal with these heads if I get everything else right.

4. As for the cams. It seems the popular opinion seems to be the smaller comp cam..which is really a TF stage 2 (or dang similar). I have a few people who feel the larger comp cam would actually benefit my smaller heads...that doesnt make sense to me..but I am not the expert.

Like others have mentioned, I got curious and have called comp 4 times so I could talk to 4 different people (hand to hang up on one guy a couple times, he must have had the fastest hands when answering and was messing up my little test). the first guy told me the smaller cam...the other 3 actually ALL told me the larger cam I have listed in my first post...so there does seem to be some consistency at least. I asked for reasoning, and all 3 seemed to think that it would simply be a better fit to hit my goals even with the afr 165 heads...they did say that for breathing room a 185 would DEFINITELY hit my goals. Are these guys all wrong?

5. I am trying to get through to anderson since he seems to be a popular choice. I think its overpriced..but maybe based on what he suggests it will give me an idea of whether DSS and Comp seem to be spot on, or dead wrong.



Thanks guys. No matter what happens in the end, I'll report results after this is all over so we can see if I come out looking like an idiot with a 13.0 second 331 stroker or not lol.
 

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12.0 isn't good with a 331 stroker, but if it's a goal, its a goal to be honest. It would probably hit 12.0 with the perfect cam on that small of a headf, but it's still far fetched. Would have been better off going on a 302 with a good gear.
 

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There's nothing wrong with going with a 331. With your small heads, you wouldn't gain anything by going with the 347 anyways.

The cam is going to be the key to getting this thing where you want it, and some cam companies just have better lobe profiles than others. The Anderson may be more, but they are good cams. You get what you pay for, in this case. I think a 12.0 is possible with those heads.
 

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12.0 isn't good with a 331 stroker, but if it's a goal, its a goal to be honest. It would probably hit 12.0 with the perfect cam on that small of a headf, but it's still far fetched. Would have been better off going on a 302 with a good gear.
Well..here the other side of it. Lets say I do as you suggest, swap to 185's..get a $400 custom cam...and grab a $600 RPM2 intake. Where will that put me, low 11's? Its just too fast at that point...my wife is learning to drive a manual for the first time on this car. So maybe I should have built a 302...but I had everyone telling me the 302 was going to have to be pretty radical to hit that goal...and by just adding some cubic inch I would get there easier.
 
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