I just purchaced a 1974 Charger Rally which has the 205 Hp (400 cid) which is a N code in the vin. I see they also made a 250 HP (400 cid) which would be be a P code in the vin.
What i'm looking for is the differents in the 205 hp (400 cid)
& the 250 HP (400 cid) in 1974?
Both engines had 8.4 compression.
2007-06-05 01:08:45 · 5 answers · asked by moparwes 1 in Cars & Transportation ➔ Car Makes ➔ Dodge
amy az is headed in the right direction. It has do with the cam. The heads, blocks and intakes were all the same casting. So the 400-4HP engine had a different cam than the 400-4 engine.
74-75 400 / 440 /Head Casting# 3769 975/ 88cc,/Intake 2.08" Exhaust1.74"
Intake Manifold 74 400 4bbl Casting #3698 442
V8-400 4-bbl/ Bore/Stroke 4.34 x 3.38/ 8.2:1 Compression
V8-400 4-bblHP/ Bore/Stroke 4.34 x 3.38/ 8.2:1 Compression.
2007-06-05 08:45:36 · answer #1 · answered by 69 FstBck 4 · 1⤊ 0⤋
The difference in horse power could be a change in heads castings from the 906 to the 452's or a change in cam specks Also that could represent the difference between 2 and 4 barrel versions.Chrysler didn't have lean burn in 1974.Also if you swap to a 440 you don't have to swap the k frame the 400 is a big block as well just a b motor or low deck.
2007-06-05 08:18:26 · answer #2 · answered by Amy m 6 · 1⤊ 0⤋
I remember 1974 and american cars got smogged up. Performance was terrable and Lean burn systems caused lots of carburator difficulty. Any Dodge engine back then was way down on power as were Chevy and Ford. Just bite the bullet and Buy a 440 10 to one Crate motor with High Rise Manifold Replace the Carb with Holley 4BBL Pro-Inject system and make almost 500 streetable horsepower. That will satisfy need for speed. Rember the K frame will also need to change
2007-06-05 01:19:59 · answer #3 · answered by John Paul 7 · 1⤊ 2⤋
stumble on a three inch or greater intake gadget... substitute the exhaust to a greater loose flowing gadget. seem for a throttle physique spacer... and verify ebay for a working laptop or laptop reflash. actual a motor's an air pump so in case you get air out and in greater actual, you additionally could make greater potential. those are all less costly consumer-friendly fixes and the intake and throttle physique spacer may well be finished your self w/ purely a ratchet set and screwdriver
2016-11-05 00:02:44 · answer #4 · answered by ? 4 · 0⤊ 0⤋
I think a different camshaft was used in the P code
2007-06-05 11:28:27 · answer #5 · answered by Lee B 3 · 0⤊ 0⤋