what were you traping before you didn the cam and heads?

 

Before the heads/cam, the car ran a best time of 13.24 @ 101.94 with a 60' of 1.77. I dont remember the 1/8 times.

Brian

 

Brian...the dyno numbers you posted are pretty darned close. I'll try and get them scanned tonight and sent to you so Andy can put them up on your site.
The dyno numbers are STD. Tune is right on...that's not a problem.
I still think it was the fuel pump. The old butt-o-meter isn't always accurate.
It's not the gearing, it's not the converter, it's not the tires...so quit thinking that.
So you have verified wot pressure then? Not just revving the car?
I wonder if that maf malfunction code has something to do with it. Pull the codes out again when you get home and see if that code is there...again.
Other than that I'm at a loss. :sad:

 

Dan,

That post of yours sounds pretty much like our phone conversations lately. Actually, it sounds exactly like our phone conversations that we have ahd that last few weeks. With that MAF malfunction code, the car would always put out an SES light and it hasnt done that yet. When I get home this weekend, I will either move the computer to the garage and read the code or stop over at your house maybe friday night at have you read the code for me. I also am going to be changing the intake this weekend as I believe it is causing some air flow problems. The intake ports on the intake itself are larger than the ports on the heads. This is causing the air to go turbulent or change directions as I was told by Seth at CMotorsports. The parts are larger because I port matched them to a different gasket than what I used on the heads to make the port opening size. This is my own stupid mistake that I realized today when I was stuck in traffic for 3.5 hours . Well I gotta go, and will look forward to that email from ya.

Brian

 

Dan,

I also am going to go out and re-verify that the fuel pressure doesnt dip at all aagin this weekend. If you want, I can bring the gauge to your house and I can check it when you are there.

Brian

 

I'm sure you're quite capable of checking fuel pressure by yourself.
I'm guessing that intake has something to do with your problem.

 

Yeah, yeah yeah I know its a stupid mistake. I guess I can call it a beginners mistake. Well anyway I just need to get the porting bits from Baxter's so that I can port match the intake the proper way. If I get the intake painted friday night or sat morning, it should be on the car by sat afternoon I hope. Then maybe I will head up your way and we can make a few logs of the car and/or add some fuel to it.

Brian

 

Your car is simply a hunk of **** Brian. You should hand it over to me free of charge. It'll get sorted out I'm sure, from what I read about the PSI fluttering around, I'd say that was definitely a big problem.

 

If you are talking about port matching the intake to the heads we did one that way and actually found the non-port match made more torque (30 ft/lbs) and the HP stayed the same if not just a tad more (1-2).

 

Ken,

So your saying that I shouldnt even mess with the intake at all in my situation??? I currently have the ported one that is on the car, and then I still have the bone stock one that I removed when I did the heads/cam/intake swap many months ago. Should I just put the intake on in its stock form and go from there. Your help here is greatly appreciated since you have dealt with this before.

Brian

 

Here are the links to my recent hp and tq dyno graphs. These were made with all of the current mods I listed previously except for the fuel pump.

Horsepower chart--
http://groups.msn.com/BriansFbodyPic...oto&PhotoID=79


Torque Chart--
http://groups.msn.com/BriansFbodyPic...oto&PhotoID=80

Thanks to Dan K for getting these to me.

Brian

 

We were just as puzzled as the next guy.
We did not think it would make that big of difference but it did. Since changing the intakes on these motors are pretty easy anyway I would try it and see.

It has something to do with making the air/fuel tumble a little more before it goes into the chamber is the only reason that we could think of.