Project 3400 Roller Cam Block (Page 75/82)
lou_dias JUL 05, 03:32 PM
"An inside look" at my car!
lou_dias AUG 27, 08:47 AM
Sorry for no direct updates in a while.
The car may have 1 last race in it for this season in October if:

I only have valvetrain issues that can be fixed before then.
On the Memorial Day race of this year, the track was wet and I over-revved the motor on both launches. 2 weeks later when I had brought it back to the track the car had a noticeable power loss. It now seems to be running on 4 cylinders.
I am hoping it's just a valve-train issue that can be fixed. In the meantime I have started building up a 3.5L build but waiting on the custom pistons and rods from La Fiera.

The other thing I am trying to fix is the handling. The rear HELD bump-steer correction arms are old have the heim joints are worn which is why I've been spinning out in turn 3/4 when driving hard rather that sliding out like an '88.
I ordered some parts from Grainger: 20F989 male rod end, RH, 3/4-16. That is based on information another ARRAUT rear bump-steer kit owner gave me. They need to be un-tack-welded and hopefully these are a perfect replacement and eliminate my wiggly behavior coming out of turn 2 and into 3 and 4.

So the car will be down another month. In the meantime I am adding some coil-overs to my red 3800SC-auto car so that may show up at the track again soon. F40 -> 4.9 swap is pending as well.
lou_dias FEB 23, 05:53 PM
Long-story short, I lost compression in 2 cylinders.

Anyway here's the heads that were on that motor, the guides were warped so I had them drilled out and new guides were put in.

I will use these on my stock Formula once it's time to replace the 2.8...

https://rumble.com/v2aonfa-...-v6-heads-redux.html
Notorio FEB 24, 05:09 PM
Those 1.4" ID exhaust ports are incredible! Did you also do the custom mod to the middle intake??



Do you think you are now upper Intake limited? I guess the MPFI straight-shot intake must be quite a bit better than our stock, distributor-avoiding upper, yes??
lou_dias FEB 24, 06:11 PM
yes, as I documented, I picked up 22 rwhp at 6000 rpm by notching the middle intake

I'm switching to a custom upper+middle combined intake for the next engine.

[This message has been edited by lou_dias (edited 02-24-2023).]

lou_dias SEP 06, 10:07 AM
New build is finally getting closer to being done...

6" rods, custom pistons with 3.7" bore; titanium valves 1.8"/1.5" and a higher revving cam with ~.550" lift
fierosound SEP 06, 11:08 AM

quote
Originally posted by lou_dias:






That's an interesting oil filter adapter.
Tell me more.


.------------------
My World of Wheels Winners (Click on links below)

3.4L Supercharged 87 GT and Super Duty 4 Indy #163

[This message has been edited by fierosound (edited 09-06-2023).]

lou_dias SEP 06, 11:32 AM
It came with the used 3400 engine. It may hit our cradle and will probably get removed during the installation. I believe the donor was a 2000 Oldsmobile w/3400. It's 3.5L now. The machine shop was putting everything back on from the 3400 and I had to stop him. He had the 3400 water-pump on as well. I clipped that out of the pics... Ordering all new Fiero hardware.

[This message has been edited by lou_dias (edited 09-06-2023).]

fierosound SEP 06, 07:49 PM

quote
Originally posted by lou_dias:

It came with the used 3400 engine. It may hit our cradle and will probably get removed during the installation.



I was wondering about that. It looks like it might.

But it's crowded in that area on my GT.
(NOTE: I have a later model small starter on engine now)

[This message has been edited by fierosound (edited 09-06-2023).]

La fiera SEP 06, 09:33 PM

quote
Originally posted by fierosound:


I was wondering about that. It looks like it might.

But it's crowded in that area on my GT.
(NOTE: I have a later model small starter on engine now)






Fierosound that looks like a work of art! What engine is that?