3rdgen - should I use MAF or Speed Density?

[IndyTruck]

I've got an 85 2.8 MPFI Camaro and an 89 2.8 parts car. Also have a 3.4 motor but I think I'm about to sell it. Will get another 3.4 someday...

Anyway, the 85 has SD and the 89 has MAF. Which system should I use, and why?

Stock 2.8 motor and T5 for now, stock 3.4 later. No emissions checks in FL.

thanks
kevin

[bobrules]

MAF

[3.4 slow to go]

edit: the 85 has MAF, 89 is SD [img]graemlins/stickpoke.gif[/img]
edit my edit: Which motor has the fewer miles on it? 89 is rated slightly higher hp & tq than the 85. Maybe use 89 long block w/85 induction.

[ November 21, 2003: Message edited by: 3.4 slow to go ]</p>

[IndyTruck]

No, the 89 absolutely has MAF. I haven't looked at the 85 lately but I'm 99% sure it doesn't.

I was a parts guy at a Chevy dealer in 89 when Chevy was retrofitting SD into MAF cars. You got a tube to replace the MAF, a chip, and a sticker.

The motor in the 85 is blown. I'm using the 89 motor, since I'm selling the 3.4. But if MAF is better, and if I can put it into the 85, I will.

Bob, thanks for your input. But I still need to know why. Especially since Chevy was taking out MAF under warranty.

I've been doing Fords for a while, and MAF is the way to go for most people with Fords, and even in 89 as Ford was going from SD to MAF, I was wondering why Chevy was going the other way. If anyone knows, I'd like to hear.

thanks
kevin

[3.4 slow to go]

yup, they went sd in 90 w/the 3.1 [img]graemlins/dunce.gif[/img] [img]graemlins/slap.gif[/img] [img]graemlins/slap.gif[/img]

double my bad.

No scientific reason from me as to why MAF is better, but GM had it, went to SD, & came back. I belive very few GM cars don't have it (could be wrong). Even have sen MAF conversionds for Vettes in Jegs tolet them have it.

[1998silverbird]

<blockquote>quote:</font><hr>Originally posted by 3.4 slow to go:
yup, they went sd in 90 w/the 3.1 [img]graemlins/dunce.gif[/img] [img]graemlins/slap.gif[/img] [img]graemlins/slap.gif[/img]

double my bad.

No scientific reason from me as to why MAF is better, but GM had it, went to SD, & came back. I belive very few GM cars don't have it (could be wrong). Even have sen MAF conversionds for Vettes in Jegs tolet them have it.<hr></blockquote>

Speed density is easier to tune and burn chips.. Thats about all I know on Speed density...

[ November 25, 2003: Message edited by: 1998silverbird ]</p>