Hey everyone, I have an 87 Sport Coupe with a 2.8 MPFI and it has around 50,000 og miles on it. It has a good amount of rust but mostly fenders and quarters which I have already picked up new ones. I just bought an Iroc so I could take this one off the road and rebuild it. Im pretty much focusing on the rust for right now, but I am planning to do some motor work since the car runs extremely well and I see the potential of it, plus i just flat out love my 60 degree . Here is what I plan, I am waiting for my step dad to pull the motor on his rustang, then we are going to pull the 2.8, and I want to pep it up a little, I have been researching parts for these cars for a looong time now and have a pretty good idea of what I want to do. Here is a few things I plan to do, i want it to breathe a little better so i am going to get a bigger throttle body and invest in the dynomax exhaust, i already have the pace setter headers on it, i am also thinking a hypertech or JET PROM chip, anyone have any experience with these chips? I am deffinatly going to upgrade the camshaft and heres where I need help. I notice more and more cams coming out for this car everyday and I hear some many different things about them all, if anyone has cammed there 2.8 please help me out, I want to see a little more low end torque, and just a little more power thru the whole power pand, just mild though i want to keep my driveability. I also might do a rebuild of the motor with forged internals, maybe, i also want to look into a turbo, it seems reasonably cheap and simple from daves how to, but well see. Any info would be much appreciated.

 

the 260 grind is a very nice all around cam,and is suitable as far as a boost friendly cam.if u give delta camshaft a call i belive u can get the cam for 50$'s as a regrind.which sure as hell beats comp and cranes price of 2xx$'s

 

Getting a regrind done by delta is the best $ per hp way to go, they also do custom grinds. If you have acess to a dyno program like DD2000 you can come up with your own profile with a little tinkering.

Forget the jet or hypertech chip though, complete waste of money. You can get the stuff to burn your own chips and swap ecms for less than that. Look here.

 

Ok thanks alot guys, I will keep you updated. Another question, with a bigger cam will I have to worry about the valves hitting the pistions since we have flat-tops? Would roller tip rockers make much of a difference besides less friction?

 

If you have a big enough cam it could be an issue, but a cam that large would be a waste on a mostly stock engine. Roller rockers reduce friction and more importantly extend the rpm range of the engine. Alot of engine building is for durability, not just raising output.

 

So I should be alright with the 260 grind? As far as rockers any suggestions on brand or ratios?

 

You will have no problem with the cam, lots of people are running one without problems. Look for crane rockers. They make just roller tip rockers that aren't very expensive. If you want to spend some money look for the gold race rockers.

 

Some fwd v6's are roller fulcrum, although getting them to fit may be a little trickey because of the width. You'd need to grind on them to get enough clearance.

 

Thanks for the ideas, right now I'm just trying to get my 305 to run right so I can work on my 2.8, I know sounds dumb, fixing one Camaro just to work on another. But I look forward to pulling my little 60* apart and seeing what she can do so I will let everyone know what I am doing and hopefully I will remember to take some pictures.

 

Take a look at what I did to mine. I've never dyno'd it but its lacks some serious power up top. My own research has led me to believe that the stock intake and heads won't flow enough air to make any power. Me upping the displacement only made the situation worse.

https://www.thirdgen.org/forums/v6/3...ed-intake.html

160 cfm per head isn't very much. So I guess its important that you do not over cam that motor with stock heads. I did and I regret it.

 

Ya, I've heard the heads are the biggest problem on are little motors, I enjoyed watching your drifting video, nicely done, but my 2.8 is off the road for now so I am gonna play around and see how well I can port the intake system, I still am undecided on what I want to do about the heads, I just know I'm not interested in the top end swap. But I'll see what happens, thanks for the info.

 

Also, any suggestions on lifters? I am probably just going to go ahead and do a timing chain, info on one would be , Thanks.

 

When you buy a cam also buy it with the right valve springs and lifters. Get a double roller timing chain too.

 

I was going to go with a re-grind from delta, can you get springs and lifters through them?

 

lifters yes, i dont know about springs,order the 916 springs from summit they are compcam parts

 

Will do, thanks for the input.

 

Delta is a decent company. Thats who I got my cam from. Its the biggest one (one of three?) for the MAF based 2.8. Its "working" with my MAP computer. Not well though. Idle is still not very tunable in closed loop mode. Too much overlap or something. The computer registers as lean but its really super rich.

Thanks for the props on the drifting! I try the best I can, there just isn't enough power to keep the drift through the straight parts of the track. Thats why i'm swapping in a new motor.

 

I look forward to see what the car will do with the new motor. The car is balanced to 8k? You wouldnt happen to have sound clip of that would you? That would be

 

i might have a clip of my car turning 7,800 rpms in the burnout box lemme see if i can find it ill even post the data log to go with it if i can find the video

 

 

not the clips i was looking for but i found some uploading to youtube now
rob has the clips of the real high rpm stuff ill have to see if he still has them on his pc

 

Either way, I always enjoy watching other peoples cars.

 

how did you manage 8k? What displacement and setup do you have? I bet the turbo helps with the upper rpm power.

 

http://www.youtube.com/watch?v=_UC6o5YRh0k#

in order that shoudl be liek 6k rpms 6,500 rpms and the last should be just over 7k roms
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the old clips i had were 2.8L with the 260 cam that thing loved to rev with the turbo(these are the clips i have to see if rob has still)

the clips i posted are 3.1L custom 268/272 cam from delta same turbo from the 2.8 lemme find the data logs from the old 2.8 motor

btw be sure to click the watch video in highquality link

 

Thanks. Hell Yeah! What a nice distinct sound in the midst of all those V8's, way to rep the 60*s!

 

data logs of turning the 2.8 to 6,800 and 7,400

 

Very nice, did the 260 cam make any power up there, or did the turbo just take control?

 

its mostly the turbo,the 260 is a nice cam it deff adds alot of mid and high rpm range to the na motors, but the intake in the na apps is hurting them to long of a runner with a very small plenum volume.

thats why i built this

 

this is the inside cutaway views of the stock 2.8/3.1 upper











lol even honda motors intakes have a larger plenum volume then out motors have

 

Yeah, I would say that would be a problem at high rpm's. I like your design, simple yet effective any idea on cfm numbers? I dont know if you have seen the aftermarket intake McKinney makes , the runners look longer than stock, make for some nice torque, looks like a knock-off tuned-port for a V-6, im not sure if its worth $300, but it looks kinda cool.

 

mckinney is alan, he posts on the boards here i dont know the flow numbers i never had it flowed,but it makes a very huge and noticable diff even on a na motor.specially above 3,500 rpms.and it was amplified even more on the turbo motor

put it this way i picked up 4-5 inches of vacum at idle on a stock motor.

btw alan i belive has still to this day the fastest na v6'er

 

Now that I think about it, I remember reading that on a post a while back. I dont remember the numbers but I remember it was impressive, I dont plan to stay n/a for long, once money allows I am planning on attempting the turbo install, but for now I will just build up to that with the cam, valvetrain, exhaust, porting, etc, etc. Little stuff here n there, so many people asked me why I bought a v6 Camaro, when I pull up then im gone when the smoke clears, theyll know

 

Would anyone recommend that Intake Manifold from McKinney Racing??

Looks pretty cool looking.

62mm Throttle Body 8-0. How much bigger is that to our stock TB??

 

Considering that he has the fastest n/a v6 id say yes it probably works alot better then stock. Our TB i think is 48-52mm I could be wrong. Anyone else know?

 

I think its 48. Not sure without measuring.

If I remember correctly, the port choke limited horse power is 220-240 for our motors. Without changing that I doubt he hit that. I hate the iron V6 heads.... But with modifying the intake like the McKinney I bet he got close to 180-190. Just my experience with things.

 

Yeah I would really like to see performance parts take off for our 2.8/3.1's. Especially with gas the way it is, maybe theres hope, if not screw it ill make my own parts.

 

the gold racing rockers wont give you much difference and you just want more of a daily drive situations, so keep it to comp cams, magnum roller rocker arms they make a good set for the 60 degree 173 motor also with the gold racing rockers its going to cost like 300 plus, and you will have clearance problems.

 

You won't have any clearance problems at all with either rockers. Both types of rockers are 1.6 ratio, I'm running some now on a stock motor and they are fine.

 

o really? i could have swore i heard someone saying that there is a problem with the clearance with the gold, because they are a more fatter type to say, but yes i know the 1.6 magnums from com cams would fit, thanks for the correction.

 

Woah! I think I'm gonna get that McKinney intake and TB!

One question though. In the pic its got the 3.1 style IAC and I'll need the 2.8 style. Will my stock IAC bolt to that TB?

 

wouldnt the intakes both match up? because all gm really did to the 2.8 was bore it out. to make a 3.1.so...im pretty sure if you wanted to you could use the same upper intake from a 3.1...this is just me thinking really hard about it....so...i can be wrong. but yea that intake is really sick.

 

A 3.1 is a stroked 2.8. The 3.1 intake is the same as the 2.8.

 

I was referring to the Idle Air Control solenoid on top of the TB which is typically called an IAC. The 3.1 uses a different one than the 2.8. Just wondering if I can just use the one from my TB on the McKinney TB 'cause in the pic its got the 3.1 IAC.

 

I believe that the TBs themselves are the same. That top plate that the IAC is housed on can unbolt and be swapped with a 2.8 one.

 

Thanks man, that is what I needed to know! My local wrecking yard has dozens of 2.8 and 3.1 f-bodies so if worst came to worst I was gonna just go pick up a 3.1 TB and experiment.