head hunter
In the second paragraph, the last two sentences confirm what I have been attempting to convey to Dusterboy.
“The #302 swirl port castings are the best choice for a mild 318 buildup if you are having them ported. If you are going the un-ported route, go with the 360 heads but have them milled.”
The operative word here is MILD…my only point to this rant was to inform folks that if you are looking for BIG power, then save your money because 302’s are for MILD street performance and trucks.
I case you are interested; this was my old 318 combo to the best of my memory:
67 Barracuda, 318, 302 heads, MP 284/.484 cam, RPM manifold, 650 dp, 1 5/8 headers, 727, 3500 stall, 8 ¾ w/ 3.55 gears. 14.6-14.5 @ 100.
Same as above except with ported J heads: 13.9 @ 105.
All runs were at Bandimere Speedway, Denver CO 5800 feet above sea level.
FWIW, current combo is similar except with a 360:
Same car, Eddy heads, MP 292/.509 cam, Air Gap, 750 dp, 1 ¾ headers, 727, 3500 stall, 8 ¾ w/ 4.10 gears. Best to date, 10.97 at 123 MPH.
I forgot to mention one VERY important factor! All of these runs were on a 150 shot of my favorite oxidizer…That might be why my engine favored the larger ports. But running on the motor, the difference was still about a half second between the 302’s and the J’s… et’s were in the mid 15 to low 16 second range on the motor.
In the second paragraph, the last two sentences confirm what I have been attempting to convey to Dusterboy.
“The #302 swirl port castings are the best choice for a mild 318 buildup if you are having them ported. If you are going the un-ported route, go with the 360 heads but have them milled.”
The operative word here is MILD…my only point to this rant was to inform folks that if you are looking for BIG power, then save your money because 302’s are for MILD street performance and trucks.
I case you are interested; this was my old 318 combo to the best of my memory:
67 Barracuda, 318, 302 heads, MP 284/.484 cam, RPM manifold, 650 dp, 1 5/8 headers, 727, 3500 stall, 8 ¾ w/ 3.55 gears. 14.6-14.5 @ 100.
Same as above except with ported J heads: 13.9 @ 105.
All runs were at Bandimere Speedway, Denver CO 5800 feet above sea level.
FWIW, current combo is similar except with a 360:
Same car, Eddy heads, MP 292/.509 cam, Air Gap, 750 dp, 1 ¾ headers, 727, 3500 stall, 8 ¾ w/ 4.10 gears. Best to date, 10.97 at 123 MPH.
I forgot to mention one VERY important factor! All of these runs were on a 150 shot of my favorite oxidizer…That might be why my engine favored the larger ports. But running on the motor, the difference was still about a half second between the 302’s and the J’s… et’s were in the mid 15 to low 16 second range on the motor.