Mopar performance 360/380 hp crate motor
Going from a 200 cfm head to a 300 plus cfm head will gain substantial power gains, problems is your stuck with 9:1 cr limiting and cam upgrade.
Yes, but, Not really unless he swaps in a cam that lifts the valve up high enough to take advantage of the heads greater flow. He will gain power but only as far as the flow differences allow at the max valve lift and only just on the raw numbers, there will be more power but minimal amounts. The actual port itself may or may not yield a greater result.
IF! One can find a good reliable source of the stock head flow with the same valve in the head, (I forget if the MP 360/380 has OE valve size or an upgraded 2.02) they could match it up against the Trick Flow heads flow numbers and compare. The comparison would only be good until the cam stops lifting the valve which is around, IIRC, .513 lift? I forget!
To really take advantage of that head, would be a new higher lifting the valve cam. (As a basic) Otherwise, I forecast low gains, high disappointment & a thin wallet.
Truly the biggest issue are the pistons and how much lift they will allow..... or not....
Also, what are the head chamber cc’s of each head?
9.0-1 is that middle of the road ratio. Might have to play tricky things on it with cam timing to get best results.
@R4Sedan , they were good engines for what they were and performed well for what they were. But I really didn’t and still don’t think much of them. They lack head flow and could really use a RPM intake, which MoPar doesn’t have. Just the aluminum dual plane copy and the as equipped, M1 single plane which is to much intake for what it is.
They did do well at the track in gutted Dusters. That’s for sure! But not really a street friendly combo.
