3.4 camaro, new here

[bob442]

when there was a point in time i was looking for a lt1 intake, is was pretty much impossible. another option is getting a TB and a flange from a DOHC 3.4 from in a lumina. i made an adaptor from what i had actually removed with a hammer from the wrecker lol

[2.8/3400 1985 Camaro]

you shouldn't just gut the cat, that actually hurts flow and performance, should either replace it with a high flow cat or a straight pipe

[Jonsgreasemonkey]

It's sure better than it was. but I do have a high flow cat on order.

Here's the update:
I gutted the cat, and it actually drives like a 3.4 now. It makes the same power at 3/4(ish) throttle as it does at wot, not less; and it doesn't smell like raw fuel all the time. I'll putting it on the dyno this week for a base line. Then over spring break I'll weld the intake. I'm going to use the stock 3.4 TB and fuel injectors first. Once I get it running i'll swap bigger injectors and a bigger tb.

Then there's only one problem, the tune.

[Jonsgreasemonkey]

Back from the dyno take 2. Gutted cat, K&N cone filter.
The air fuel ratio was correct, I gained 10hp, but the Graph goes DOWN. It did however rev all the way to redline and shift, it wouldn't even do that before.

http://www.youtube.com/watch?v=tG7pP5D-jkw

[tkoforpresident]

I wish I could dyno after each mod lol

[Jonsgreasemonkey]

It's nice having friends. It still costs money but I work it into the cost.

How do you like your 3.42 gears? I was looking at getting some 3.73's. I think my rear axle bent.

[tkoforpresident]

It's nice having friends. It still costs money but I work it into the cost.

How do you like your 3.42 gears? I was looking at getting some 3.73's. I think my rear axle bent.

they're all right...nothing to brag about.. I'd rather have some 3.73's.

[86FieroSEv6]

Have you considered using a large single exhaust? Never doubt the power of the scavenge effect on medium size engines. When under vehicle clearance is an issue making dual exhaust necessary, you might consider anti-reversion cones at the exhaust ports.

[Jonsgreasemonkey]

It has pacesetter headers that merge into a 2.5" intermediate pipe. then it splits at the muffler.

I just remembered that I didn't replace my timing chain when I rebuilt the motor. Could a loose chain cause this issue? It's got 125,000 miles on it.

[86FieroSEv6]

This is a perfect occasion to invoke the magic DUH . . . .

[Jonsgreasemonkey]

To the timing chain?

[bob442]

wouldnt a sloppy timing chain hurt bottom end and better top end?

[Jonsgreasemonkey]

Theoretically if the engine is tuned right, but doesn't the computer give spark off the cam? or would the computer compensate for the retarded timing and advance the spark?

[geoffinbc]

No spark is dependent on crank position. A dyno graph does not tell much of the story. It is nice to know you are making power and in this case more than last time but a data log is a million times more helpful in this situation.

[Jonsgreasemonkey]

What is the best way to data log a 95 OBD 1.5? I can't even find a scanner that works, or get Tuner Pro to connect properly.