If youve wondered if even the less expensive aftermarket heads have a worth while advantage over stock heads?
the dart platinum are a good value in an entry level aftermarket head, they provide a good significant boost over stock heads and are a direct replacement
well in most cases your flushing cash down the toilet porting stock heads compared to buying better aftermarket designs, most stock SBC heads have 155cc-170cc head ports designed decades ago and designed for the typical cars 1500rpm-4500rpm power range
http://streetmuscleaction.com/engines/i ... -vs-stock/
(Click on latest video/ head test )
A VIDEO DART VS 882 chevy heads TO WATCH
http://www.youtube.com/watch?annotation ... v3ZkqZiMjI
keep in mind that if your into true performance it requires far more changes than a simple head swap alone, but if your willing to change the compression ratio, drive train,intake and exhaust along with the improved cylinder heads there are other options that have significantly better power potential, such as the larger , trickflow dart, afr, brodix designs
Found the flow chart in Darts NEW 2012 Catalog.
http://www.dartheads.com/catalog.pdf
DART SHP 180, 64 or 72cc
FLOW DATA @ 28†Water
Lift Intake Exhaust
.200†139 114
.300†190 145
.400†218 164
.500†222 172
.600†218 174
DART SHP 200, 64 or 72cc
FLOW DATA @ 28†Water
Lift Intake Exhaust
.200†129 114
.300†185 145
.400†229 164
.500†261 172
.600†263 174
RELATED INFO
http://garage.grumpysperformance.com/index.php?threads/port-speeds-and-area.333/
viewtopic.php?f=52&t=5129
viewtopic.php?f=52&t=5078
viewtopic.php?f=69&t=5357
viewtopic.php?f=52&t=240&p=285&hilit=head+flow+numbers#p285
viewtopic.php?f=71&t=741
http://www.j-performance.com/index.php? ... view&id=48
viewtopic.php?f=52&t=975&p=1700&hilit=210cc#p1700
viewtopic.php?f=52&t=322&p=722&hilit=head+flow+numbers#p722
viewtopic.php?f=52&t=4664
viewtopic.php?f=50&t=3156
the dart platinum are a good value in an entry level aftermarket head, they provide a good significant boost over stock heads and are a direct replacement
well in most cases your flushing cash down the toilet porting stock heads compared to buying better aftermarket designs, most stock SBC heads have 155cc-170cc head ports designed decades ago and designed for the typical cars 1500rpm-4500rpm power range
http://streetmuscleaction.com/engines/i ... -vs-stock/
(Click on latest video/ head test )
A VIDEO DART VS 882 chevy heads TO WATCH
http://www.youtube.com/watch?annotation ... v3ZkqZiMjI
keep in mind that if your into true performance it requires far more changes than a simple head swap alone, but if your willing to change the compression ratio, drive train,intake and exhaust along with the improved cylinder heads there are other options that have significantly better power potential, such as the larger , trickflow dart, afr, brodix designs
Found the flow chart in Darts NEW 2012 Catalog.
http://www.dartheads.com/catalog.pdf
DART SHP 180, 64 or 72cc
FLOW DATA @ 28†Water
Lift Intake Exhaust
.200†139 114
.300†190 145
.400†218 164
.500†222 172
.600†218 174
DART SHP 200, 64 or 72cc
FLOW DATA @ 28†Water
Lift Intake Exhaust
.200†129 114
.300†185 145
.400†229 164
.500†261 172
.600†263 174
RELATED INFO
http://garage.grumpysperformance.com/index.php?threads/port-speeds-and-area.333/
viewtopic.php?f=52&t=5129
viewtopic.php?f=52&t=5078
viewtopic.php?f=69&t=5357
viewtopic.php?f=52&t=240&p=285&hilit=head+flow+numbers#p285
viewtopic.php?f=71&t=741
http://www.j-performance.com/index.php? ... view&id=48
viewtopic.php?f=52&t=975&p=1700&hilit=210cc#p1700
viewtopic.php?f=52&t=322&p=722&hilit=head+flow+numbers#p722
viewtopic.php?f=52&t=4664
viewtopic.php?f=50&t=3156
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