Late Model Racecraft

We have received our LT1 castings from GM and have already flowed/torn down and started grinding on them. Overall we should have numbers very soon.

Our before numbers were as follows:

Was flowed on a 4.060 bore at 28" of water with a Untouched port and valve job.

lift Intake Exhaust
.200 134 120
.300 204 164
.400 258 193
.500 291 204
.600 285 208
.650 291 210


And now for some pictures





And now the fun part begins!

Roughed in Exhaust port

ZONES89RS

iTrader: (25)

In for results! Looks promising. Could be wrong but looks like there is plenty of room for grinding.

Worm Boy

iTrader: (2)

Our C7 is scheduled to arrive end of august or sometime in September. We should have quite a few prototype parts to install the day she arrives for testing. Then the twin turbo system R&D begins.

BizZzatch350

iTrader: (33)

LT1 heads, remake a LS based CC306 for it and a wet kit, go to rankin and a watch your boy make cash like it was 1995.

HioSSilver

iTrader: (8)

How do they compare to previous ls heads?

nastychevelle

iTrader: (7)

More Development pictures

ZONES89RS

iTrader: (25)

Doesn't get too much big block port looking than that!

Late Model Racecraft

Updated flow numbers (still not finished)

Lift Intake/Exhaust
.200 137/116
.300 208/154
.400 270/197
.500 310/228
.600 331/245
.650 335/252
.700 340/257
.800 345/260


Still have quite a bit more development to do, this was first attempt.

08-4door

iTrader: (5)

That's a pretty good improvement.

nastychevelle

iTrader: (7)

And that's just the first try!

flyinZ

iTrader: (15)

Looks good!

TAEnvy

iTrader: (2)

I am disappoint. I thought this was gen II content.

Still mildly excited to see final results.

ZONES89RS

iTrader: (25)

Gen II, lol. It's been done.

KCS

iTrader: (20)

It looks like you guys broke through. Is that the spring seat?

What are the valve dimensions and does it look like the seat has room for larger diameter valves?

Late Model Racecraft

We did break through, and that has been addressed already. The stock intake valve is a 2.140" valve and looks like it has enough guide spacing for quite a bit bigger valve.

02silverstang

iTrader: (7)

Thats what I was thinking yesterday.

I doubt they would tell any info they barely tell us the ci of the set ups they build.

Late Model Racecraft

Check again, it was posted right before you made your post.

And as for your "I doubt they would tell any info they barely tell us the ci of the set ups they build." comment, If you spent your time and money designing something would you give it away for free?

KCS

iTrader: (20)

I didn't mean it to sound like it was criticism, it is development work. It happens.

I'm looking at the pics and keep finding all kinds of weird changes. The valves have been flipped around and now the spark plug is angled at the intake valve. That's a big deal.

KCS

iTrader: (20)

The pictures alone are very revealing if you know what you're looking at. As they say, a picture is worth a thousand words. They're not giving away too much, but I'd say they're being very generous with what they've posted so far.

Zmg00camaross

iTrader: (11)

Looks good so far, Still going to destroy them with my cathderal LS1