ported stock intake dyno results....

[tomak]

results first.... GT40p's on 1986 motor. Very well tuned with stock intake and newer (60mm thorttle body). Added ported stock lower, cut, ported and welded upper with modified stock 63mm throttle body. Retuned for best hp and torque...

http://members.shaw.ca/sophisticated/intakedyno.jpg

Tests were started at 2500 rpm.... curves were identical upto about 3200 rpm...

then hp was
rpm ...stock ... ported
3300 172.93 173.51
3500 188.09 188.44
3700 199.39 202.66
3900 208.67 213.69
4100 216.41 222.65
4300 223.57 230.89
4500 227.25 238.24
4700 228.51 240.02
4900 229.16 241.32
5100 226.88 239.96
5300 219.73 236.74
5500 204.70 229.43

[tomak]

Here are some pics of the intake.... lower is ported to 1250 felpro gasket, 5 runners required epoxy... upper cut in half, ported to about gasket size and re welded...
http://members.shaw.ca/sophisticated/intake1.jpg
http://members.shaw.ca/sophisticated/intake2.jpg
http://members.shaw.ca/sophisticated/intake3.jpg
http://members.shaw.ca/sophisticated/intake4.jpg

[tomak]

As a side note.... at this power level.... the a K&N panel filter in the stock box was used. For kicks I tried removing the K&N and the power increase was exactly ZERO.

[Evil86lx]

My guese was pretty close..untill 5200 RPM. That a good increase in the upper RPM's.

kyle