Getting a smallblock to rev
Some good replies here chaps, thanks for the effort.
To try and clarify the rules a bit;
I have to use factory cast heads (but in my interpretation, j or x heads are still factory with a trim around the top of the bore??) larger valves can be incorporated.
Their wording, 'performance can be improved by the removal of metal'
Stroke must remain the same
Bore can be a maximum of 1.5mm over
Induction, exhaust and manifolds are free as long as they were available before 1972,
Roller cam is allowed
decking heads, block or higher compression height pistons is allowed,
Long story short, as long as the component can be described to run in the same manner as it does factory, eg oil pump uses similar internals and runs off the same part of driveline, there are certain freedoms to upgrade it.
the main circuit in consideratin for the class, as you can see it's overall a pretty fast circuit, lots of top end, most cars in the class are doing this 2.4 km stretch in around 1:04 so 8,000 rpm down the back straight would be a great advantage
The other circuit down here requires more mid range
it's not the best example as it's a step up on the class i'm playing with (more freedoms) but gives an idea of the track / class in question
[ame="http://www.youtube.com/watch?v=ri2wD7PqepY"]Symmons Plains Touring Car Masters.Raw no commentary., - YouTube[/ame]
Hope this helps
Some good replies here chaps, thanks for the effort.
To try and clarify the rules a bit;
I have to use factory cast heads (but in my interpretation, j or x heads are still factory with a trim around the top of the bore??) larger valves can be incorporated.
Their wording, 'performance can be improved by the removal of metal'
Stroke must remain the same
Bore can be a maximum of 1.5mm over
Induction, exhaust and manifolds are free as long as they were available before 1972,
Roller cam is allowed
decking heads, block or higher compression height pistons is allowed,
Long story short, as long as the component can be described to run in the same manner as it does factory, eg oil pump uses similar internals and runs off the same part of driveline, there are certain freedoms to upgrade it.
the main circuit in consideratin for the class, as you can see it's overall a pretty fast circuit, lots of top end, most cars in the class are doing this 2.4 km stretch in around 1:04 so 8,000 rpm down the back straight would be a great advantage
The other circuit down here requires more mid range
it's not the best example as it's a step up on the class i'm playing with (more freedoms) but gives an idea of the track / class in question
[ame="http://www.youtube.com/watch?v=ri2wD7PqepY"]Symmons Plains Touring Car Masters.Raw no commentary., - YouTube[/ame]
Hope this helps
