do you have a part number for the headIf you want to have a hybrid head that has 300 cfm of flow, use sections from an LS3 head that has rectangular intake ports.
Do not waste time using any of the LS cathedral port heads.
If it is a stock head, have it ported after it is completed.
We were looking at using an inexpensive aftermarket head that flowed 320 cfm right out of box.
F20C copycat 300
- Thread starter Tbone3366
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Bare 255cc Intake Runner 72cc Combustion Chamber | LPC
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Cylinder Heads, LS Block Chevy Cylinder Headswww.libertyperformance.com
Firepower354
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311cfm feeding 30ci is going to have a higher specific output than the same head feeding 50ci...
A swell example is Holdener's test of 302/327/350 Chevy's with essentially the same heads, cam, induction. Same peak power, different shaped curves.
For a Sawzall and Superglue piece, the Subaru 4v bore pitch is even closer than the LS
If one were to have a fairy godmother grant them the massive resources, such as finances, engineering talent, programming skills, manufacturing machinery, tooling, ad nauseam, to create a 4v head from nothing, making a set of billet camshafts would be child's play. We roughed them in house, on the 777/1002ci V12 4v engines, sent them to Crower for finishing.
A swell example is Holdener's test of 302/327/350 Chevy's with essentially the same heads, cam, induction. Same peak power, different shaped curves.
For a Sawzall and Superglue piece, the Subaru 4v bore pitch is even closer than the LS
If one were to have a fairy godmother grant them the massive resources, such as finances, engineering talent, programming skills, manufacturing machinery, tooling, ad nauseam, to create a 4v head from nothing, making a set of billet camshafts would be child's play. We roughed them in house, on the 777/1002ci V12 4v engines, sent them to Crower for finishing.
The Honda @ 8300 rpm has 150 lbs torque @237HP. A 300 at 1/2 the rpm with the same HP= 300 lbs torque @ 237 HP, 4150 rpm. The old pick up truck is dragging the squealing Honda backwards behind it, and doesn't even know it's there. Drop the 300 down to 3000 rpm @ 237 HP (very attainable), and it has 415 lbs of torque. . It is now pulling 2.7 Hondas behind it, while they are screaming away @ 8300 rpm. What Honda? . . swat that buzzing fly on the wall.
HP is only half the work equation.
You could hold the brakes on the old truck while the Honda burns the tires off.
You're just showing off Frank, stop picking! jk!
You're just showing off Frank, stop picking! jk!
Kinda-sorta, sho-'nuf. Too many years of running low rpm diesels dragging heavy stuff. LOL.