HO cam

Topic: HO cam (Read 3736 times) previous topic - next topic

Reply #15 – June 26, 2009, 09:44:50 AM

it's not in my car, it's in his mustang. i'm putting the cam that came out of his mustang in my car as soon as my buddy gets me his HO computer from his dad's house.

HO cam

Reply #16 – June 26, 2009, 09:54:18 AM

I got one for sale if he comes up dry.

HO cam

Reply #17 – June 26, 2009, 11:26:29 AM

he aint gonna pull it back apart to put another cam in.

it's starting to change, i think maybe the computer is trying to compensate or something....

it's starting to lope and driveability is getting a LITTLE worse, but it's still not bad.

HO cam

Reply #18 – June 26, 2009, 11:33:18 AM

MAF or Megasquirt time!

HO cam

Reply #19 – June 26, 2009, 11:46:03 AM

he's gonna MAF it if it gets bad.

he has a guy thats gonna give him the whole setup cause its no use to him cause he carbs all his stangs.

HO cam

Reply #20 – June 26, 2009, 06:58:28 PM

MAF swap is so easy, it's just not even fair to those who haven't done it...I bought a reman ECU from my local parts store and still came in at less than $150 for everything...so it looks like hell, but it was dirt cheap.

HO cam

Reply #21 – June 27, 2009, 08:39:39 AM

Why would you want to stay speed density? Especially if you want a mod friendly car?

HO cam

Reply #22 – June 27, 2009, 10:32:22 AM

everyone downs speed density, but yet they have never tried it. they just automatically go MAF because they think you have to.

there are fast speed density cars with no computer tune. you just have to know what you are doing to make it run right.

back before MAF, they were tuning these cars with a timing light and a fuel pressure regulator.

HO cam

Reply #23 – June 27, 2009, 12:24:26 PM

I was running the combo in my sig on SD and it ran ok. I converted to MAF and it runs 1000% better than it ever did with SD. It used to buck/stall at times when it was cold and I could never get it to idle right. The only way SD is happy is with the stock cam. If you keep the stock cam you can change the heads and intake and it should run *ok*. The problem that people run into is that when you go adding heads/intake to SD is sometimes you need bigger injectors, which SD can't handle.

There is a reason everyone (including myself) switches to MAF from SD: it does make mods easier and keeps driveability. If SD was ok for big modifications don't you think we would have kept it

HO cam

Reply #24 – June 27, 2009, 05:04:10 PM

i'm just trying to get my t-bird running right, which means i basically am going to finish out the HO conversion and call it good for now and maybe start bracket racing it (wont matter how fast it is as long as it's consistant)

i'm either going to get a 4 eye bird or stang to make my new DD. it'll either be carbed or MAF.

HO cam

Reply #25 – June 27, 2009, 06:21:09 PM

For the past 4-5 years, I've been Mr. Speed Density. I wanted NOTHING to do with MAF. My car ran okay after the 351 swap, but drivability was lacking a little, it would NOT high idle when it was cold, it wouldn't stay running on initial start-up and when you hammered down it would do all sorts of strange things...like thunderjet302 said...1000% better after MAF swap.

Sure, SD cars can be made fast...but ONLY with a tune...who has money for $300-$600 trips to the dyno to have their car tuned?...and if you change ANYTHING, they have to be retuned again.

Good luck either way,
Don

HO cam

Reply #26 – June 28, 2009, 09:22:22 AM

All in all the speed density is NOT mod friendly. Its not expensive to convert I would at least keep it in mind rather than blow it off.

HO cam

Reply #27 – June 28, 2009, 01:38:06 PM

we are both going MAF when we come across good deals on the parts.

HO cam

Reply #28 – June 28, 2009, 02:06:55 PM

Quote from: 86XR7project;280027

All in all the speed density is NOT mod friendly.

No; it's not low vacuum friendly....

Most aftermarket cams aren't gonna give you the vacuum at idle needed for a problem free SD setup.

I've seen plenty of larger head/cam/intake and forced induction SD setups....

HO cam

Reply #29 – June 28, 2009, 05:28:27 PM

couldn't you add a vacuum pump and that would fix your idle problem when using a larger head/cam /intake or forced induction on a sd setup?