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Dyno Time - 304

Deuce

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The diff and tyre size affect overall gear ratio.
I still do not think that you can multiply ratios of gears to see what you have. That just doesn't seem right.
 

VSCristian

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True...

I don't know what if any affect running the test in second rather than third would do, other than the higher torque figure.
 

Circlotron

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Third being 1:1 ratio where the planetary gears are locked together and rotate as a single lump might have less friction losses than first or second gear where the planetary bits roll around each other.
 

Slugger 1979

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Hey guys
New to this thread, but been reading for a while.
I have a VK modified dirt curcuit car.
Running a 304 against a swarm of LS Chevs.
Every one is trying to convince me to join the LS side but I’m not interested in joining that mob of sheep.
So I’ve built a new 304.
I wanted to keep it stock stroke with spike rods forged flat tops.
I ended up getting a set of RPM alloy heads and air gap manifold, spent a few days port matching and cleaning up short turns and plenum.
Machined them down to 55cc.
Cam is a custom 244 @50deg and 580 lift 108 love separation.
YT Platnum 1.75 rockers.
650 Holley 4150 double pumper.
Ice 2 stage ignition
Manta 1 3/4 primaries 3” collectors.
It’s in the car now and running and sounds bloody nasty.
I will get it tuned in a couple of weeks to see what we have got.
Will give u an update then..,.
 

NORTI

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Good luck it’s hard holding onto the old 5L in a field of LS :(
We are the same in burnout scene. It’s lonely being a 304 in a world of LS and Barras :rolleyes:
 

Deuce

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Hey guys
New to this thread, but been reading for a while.
I have a VK modified dirt curcuit car.
Running a 304 against a swarm of LS Chevs.
Every one is trying to convince me to join the LS side but I’m not interested in joining that mob of sheep.
So I’ve built a new 304.
I wanted to keep it stock stroke with spike rods forged flat tops.
I ended up getting a set of RPM alloy heads and air gap manifold, spent a few days port matching and cleaning up short turns and plenum.
Machined them down to 55cc.
Cam is a custom 244 @50deg and 580 lift 108 love separation.
YT Platnum 1.75 rockers.
650 Holley 4150 double pumper.
Ice 2 stage ignition
Manta 1 3/4 primaries 3” collectors.
It’s in the car now and running and sounds bloody nasty.
I will get it tuned in a couple of weeks to see what we have got.
Will give u an update then..,.
Totally need a dedicated thread to this build (V8 development section)
And you need to add pictures.

Maybe @Immortality can move it for us?
 

Slugger 1979

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Good luck it’s hard holding onto the old 5L in a field of LS :(
We are the same in burnout scene. It’s lonely being a 304 in a world of LS and Barras :rolleyes:
Yes it’s gunna be interesting. We will be ringing its neck, but I think we have the rest of the car set up pretty well so hopefully will take it up to them….
 

Immortality

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Doesn't matter, you'll sound better doing it no matter what.

edit:
Is that a single or dual plane manifold? If it's the dual plane try running it with a 1" open spacer, others have found that gives a better result as it evens out an imbalance the manifold seems to have.
 
Last edited:

Slugger 1979

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Doesn't matter, you'll sound better doing it no matter what.

edit:
Is that a single or dual plane manifold? If it's the dual plane try running it with a 1" open spacer, others have found that gives a better result as it evens out an imbalance the manifold seems to have.
It’s a high rise dual plane, will definitely try a spacer to get the last drop out of her….
 
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