347 Build

[lukep6470]

Hi,

Now I've got my home made stack injection working well on the 289 I've started my 347 Build.

Lots of Pics:

[cage]

Looks like Xmas.

[lukep6470]

Many years of smuggling parts into the garage

[boofhead]

Cage you know the feeling..... I do as well - its great.


Luke, Interesting set of parts. Two things stood out to me
1) Its not bad infact it is great though not necessary for a street engine - so why the shaft rocker assembly? I like to understand your choice.
2) The Cam is a custom grind using XE flat tapped cam profiles - why a flat tappet grind - how did you choose the cam lobes for the grind? Just want to understand your logic applied in the choices.

Every thing looks great - I look forward to more pictures as you build the engine and then put the great home developed 8 Stack on top. What you have done is great so no doubt its going to be fantastic.

[Shaunp]

Nice heads cnc Brodix.

[lukep6470]

The grind was decided by comp cams to suit the injection style and compression ratio. As you know this is a DD so I didn't want to go nuts and end up hating it while sitting in traffic.

The LGM shaft rockers were about the same price as high end conventional stud rockers and I just feel they are more set and forget.

[lukep6470]

I got the heads from Keith Craft. Notice they were shipped in Edlbrock E Street boxes

Great service but the heads are an unknown quantity as yet.

[boofhead]

Thanks - nice heads for sure. Makes perfect sense as far as the shaft rockers - very nice choice.

I am on the fence with he Cam choice. It is certainly not what I would have chosen as I would never select a flat tappet cam these days. Having said that, it will be interesting to how it turns out for you.

Bring on the build pictures.

[Shaunp]

Those heads will be fine they are similar to what most of the QLD Trans-am cars run.

[lukep6470]

So the cam is degreed, heads are on, the shaft rockers are spot on in the centre of the valve without shimming.

Now I just need to order some pushrods, and spark plugs and I'll be ready to start the swap.

[nassi]

So the cam is degreed, heads are on, the shaft rockers are spot on in the centre of the valve without shimming.

Now I just need to order some pushrods, and spark plugs and I'll be ready to start the swap.

Since I am unemployed I would like to volunteer to run that little sucker in for you. It all looks a bit tasty.

[lukep6470]

Since I am unemployed I would like to volunteer to run that little sucker in for you. It all looks a bit tasty.

The instructions that came with the short block from Dart said to use break in oil for 600miles than switch to full synthetic. I plan to do that on the first weekend!!

[nassi]

Since I am unemployed I would like to volunteer to run that little sucker in for you. It all looks a bit tasty.

The instructions that came with the short block from Dart said to use break in oil for 600miles than switch to full synthetic. I plan to do that on the first weekend!!

Perfect................ why delay these things.

[donoauto]

Mmmmmmm Engine Porn..

[lukep6470]

So pushrod length.

I've set the pushrod length checker and I get an actual length of 6.100. This is in about the middle of the adjustment range for the rockers.

If I've got this right by the comp cams doco I have the following measurements:

Actual 6.100
Theoretical 6.125
gauge 6.066

From what I can see on the comp cams site their pushrod start at a gauge length of 6.200 which doesn't help me at all.

The shaft rockers have a lot of adjustment in them but I'm unsure if they'll cope with .133" too long.