Project Junky Junk

[blykins]

Target static compression ratio?

At this point I’ve got 10.5 in my head.

[blykins]

[410bruce]

Looks like a nice, docile street grind. lol.

[frnkeore]

That's  a very interesting LC you chose for the cam. Can you give us your thoughts on it?

[blykins]

Two reasons:

1.  This cam has somewhat of an aggressive lobe, which means that even though the .050" duration is somewhat high, the advertised duration is really not.  This engine needs a specific window of overlap and if this cam were on a 108-110-112, it just wouldn't have enough.   We are sitting at 76° of overlap as it is. 

2.  A tighter LSA has a decent bearing on the torque curve and a smaller engine needs help in this area. 

[frnkeore]

I'm very interested in what it will do to the torque curve. Do you think it will bring the peak HP and peak torque, closer together and will you vary the intake center, in your testing?

[blykins]

Going with a set of C0’s that I found.

[blykins]

Well, they don't look like much now, but they will.......

I like doing the before/after shots.



I'm doing a clean-up/organization this weekend and found a new set of 1.620", 7mm, titanium valves that I had.  They are FE length as-is, but will trim the stems to allow for a lash cap since the tips aren't hardened.

I think my intake valves weigh like 85g and these exhaust valves weigh 60.  Will allow me to run a lot less spring pressure.

[Stangman]

On the front cylinder head it looks like one of the guide bosses is cracked. I’m not sure what to call it but the 4th one down.

[blykins]

Yep, no biggie, they will get bronze valve guides.  All of that will be removed.

[FirstEliminator]

 At what rpm would a 352 be happy to idle at with a cam like this?

[blykins]

1100-1200

[Heo]

Chambers look like 289 chambers except for the dip between valves

[frnkeore]

I like the 7mm ex, what are the intakes going to be?

[blykins]

Block is bored/honed, line honed, and decked.  Lot more prep work to do.

Looks a little different.

Before:



After: