Iroccer

iTrader: (1)

What do you all think of this. i bought an'87 Iroc with a 350 auto. The motor has less than 500 miles on it. It has all kinds of go fast parts on it and makes very little power. Some of the items include,edelbrock heads ,accell runners and manifold base, a bbk throttlebody, headers a hypertech chip and some sort of cam that sounds pretty lumpy at idle, an msd ignition and who knows what else. when I got it figured it needed a custom chip to run, so I sent it off to the dyno. The inital pull said it was leaning way out after 3000 rpm. The richened the air fuel ratio and the next pull produced 122 hp at 4300 rpms. Laughable, i have a few theories but I wanted to bounce this off you guys. Any ideas would be appreciated. I've alway got good help from this site. By the way i didn't build the motor so I'm not sure whats in it. I bought it cause it was a good deal.

sofakingdom

iTrader: (1)

Happens a lot. Has all the earmarks of being one of those situations where somebody washed their hands of a failed project.

Sounds like it's not really quite a "motor"; it's just ... some motor parts that somebody ... associated with each other.

I'd suggest tearing it down, find out what's in it, throw away any obviously inappropriate mismatched stuff you find (for example, "lumpy cam" and TPI don't mix), and do a better job of building it.

Since "it was a good deal", that leaves you with plenty of money to take care of whatever you find.

Ozz1967

iTrader: (4)

hahaha

Well said Sofa, well said.

Iroccer

iTrader: (1)

I took off a valve cover and measured the the lift on the intake valve on the #1 cylinder and got only .320. Thats not enough is it? My next step is to get the id number of the cam and talk to comp cams. So far I know it's a roller and the rockers are roller tipped with 1.52 stamped on them. Both the rockers and the lifters are comp cam pieces so I'm hoping it's a comp cam with the wrong length push rods. That's my theory. Any others?