Knock Knock...

[vigman]

The 4 holes

are plugs that are done @ the machine shop.. this head was cracked.. and that was the patch...... I had the same thing with 1 of my 461 heads.... It's not a bad thing.. as long as the repair was pressure tested.

So sorry......

The machine shop can change the valves from 194 to 2.02 by pulling the old seat out and machining for the new one...( $50.00 ish).


Vig!

 

[geekinavette]

Yeah, I realize that those are plugs...personally I wouldn't have gone through the trouble, especially with stock heads. I guess he wanted to keep it original (yet he repainted the thing a different color, go figure).

It was definately still leaking somewhere, I don't know if it was at the same spot or not.

I know that the heads can be machined for 2.02 intakes, but I don't really see the advantage with a CFI intake. Wouldn't you agree?

Bill

 

[vigman]

For a STOCK CFI intake ...yes

But what about the after market one.. and your thinking about a bigger cam...right?

Might......be worth it!

Vig!

 

[geekinavette]

An update on my basket case engine:

after messing around with it for many months...the beast is alive once again!

I wound up just tossing the old block, crank, and heads. I picked up a '91 truck block (it is a roller but I'm not running a roller cam right now, but plan to in the future). It's a 2-bolt block, but I did install ARP mains studs. Plain 'ol 1-pc rear main 350 crank, turned .010 under (with the correct bearings this time!). Cam is a Crane 2040 grind, flat hydraulic. Pistons are Speed-Pro flat-top hypereutectic, 9.5:1 with the stock heads. I had the throttle bodies bored to 2". The heads and intake are both stock, with quite a lot of time spent porting.

Here's a couple of shots of an exhaust port:

The intake ports were just gasket-match and clean up the casting.

I did make one major mistake, when I set the cam timing I used the wrong mark on the crank gear. It was one of those 3-keyway Summit gears, and I used the wrong "O" mark. I used the one right on the keyway, instead of the one to the left of the "O" keyway. A pretty dumb mistake, and a PITA to fix, but no harm done and it fired right up once that was fixed.

I still need to get the TBs balanced a little better I think, but she starts right up, idles nicely at about 600RPM. Can't wait to get on the road and see how it feels.

Bill

 

[vigman]

Great news Bill

I'll bet your GLAD to have her back in 1 piece!


Vig~

 

[geekinavette]

Man you ain't 'a kiddin' Vig. What a sweet sound when she finally fired up (besides being obnoxiously loud from the lack of mufflers). Today I'm going to install an 85 fuel pump, and tomorrow probably will have a set of mufflers installed, it's just too darn loud!

Bill

 

[WhalePirot]

2.02 intakes; advantage with a CFI

I was happy with my '84 after this mod to my stock heads, running a hotter cam. The added cost was low enough to easily justify the $$. Unless one polishes himself, as I did not, I could not justify the cost.

Lingenfelter told me that polishing my ports on my current engine was not worth it. While I was offended, I followed that advice. Now, I am curious about the payoff on most motors. Those ports sure are pretty!

Seems one would have to move a whole lot of air before the boundary layer improvements made a difference. Certainly a stock CFI would never flow enuf, and I wonder how high the RPM must go before one sees any real gain. As I recall, Ling's boys talked well above 7000. It's a real shame that the stock manifold cannot be opened up to flow. Someone told me I could run an old double quad manifold with the TBIs. I chose TPI before I got that far.

mike

 

[geekinavette]

My heads are 1.94". Yeah you're probably right that polishing was probably not really worth it, but I had the time to do it (not working and was waiting on other stuff at the time), and I wanted to get the experience for when it WILL make a difference.

Yeah it is a shame that more can't be done with the stock manifold. Someday I might pick up an offy or try to find an SY1. Right now I just don't need (or want) that much HP, I can't afford to be replacing the trans, rearend...etc. I think the porting job (including the stock headers) and the 2" TBs will be plenty for me for now. Once I get the hang of tuning the ECM then I'll probably get a little more radical with the engine.

Bill