Late 80's swirl port heads 302/714's
I'd like to know more about the combo.
Not much to the story really.
Zero deck, TRW flat tops, MP HD rods(the ones that looked just like stock rods but were made out of better material), steel crank, Canton oval track pan, UD tight lash solid cam, HS rockers(for a while, then Norris).
596 heads, 1.88/1.50 valves, 1-5/8>1-3/4 stepped headers, msd ignition.
Rules were stock iron 2bbl intake manifold, we used the 360 intakes.
1” carb spacer adapter to fit the mandatory Holley 4412 carb.
On the faster tracks without a gear rule, they would run them to about 7k.
The first year I used MP 1.88 SS intake valves, which were 4 groove.
The area around the grooves wasn’t hard enough, and all the grooves on all the intake valves were totally worn out after the season.
At this point the rules still required stock stem diameters.
I got some extra long bbc 1.88 ex valves and had them cut off and regrooved for the next season, single square groove. No problems with those valves, but the rockers started breaking.
After seeing how thin they were where they were breaking...... it was no wonder.
We got Norris stainless rockers for them, and that ended the rocker breakage.
For one of the motors(the “spare”) I used Crane gold rockers.
Never any breakage with those either.
For the next year I went to 11/32 stem guides and valves and just cut down SBC 1.94’s to 1.88.
