Is it sensible to replace stock I6 with a 428 SCJ?
I have a '67 hardtop with an original I6/200 CI and want to put in a 428 Super Cobra Jet. I'm not worried about space I just want to know if its worth the work?
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1967 Mustang Coupe
L6 / 3.3L / 204CI - boiled, bored 0.040, master rebuild kit (complete)
Getting new rear frame rails and trunk pan
Front frame rails, floor pan, and firewall (complete)
Space is the least of your problems. It is MONEY that you will be in short supply of.
The little Stang will need to rebuilt from the ground up! Nearly every part of the steering, drivetrain and suspension will need to be modified or replaced.
Tominator is right major mods will have to be done. If you have the doner car check out the parts you may have a good start on the parts you will need if not I hope you have deep pockets and time. I stopped counting after $20,000.00 on my 69 War Horse. But there is only one thrill better than unleashing the low end torque of that brute and BLASTING out of the hole in that rocket on some wide meats and a nine inch rear end ripping up the road.
If you decide to do the 428 I hope you know this is going to effect the car's handling conciderably. It's going to be really nose heavy and a completely different car on the road. This set up is really a straight line performance deal . Go for it but be aware of the difference in handling.--Chuck
Okay, i got the answers that i figured were coming. so what about a 390? i just want something with a bit more power than a 350. i would expect to have to change the tranny, driveshaft, and rear end, and mod the suspension some, but would i still have to make major mods to the front end and steering?
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1967 Mustang Coupe
L6 / 3.3L / 204CI - boiled, bored 0.040, master rebuild kit (complete)
Getting new rear frame rails and trunk pan
Front frame rails, floor pan, and firewall (complete)
the problem with the FE family in a Mustang is that the FE equipt Mustangs had different shock towers that were reinforced and had slightly more clearence, plus the motor mount brackets are not avalible. Swapping to a 351W is not only easier, but it would be cheaper unless you want some big stroker engine with high end heads and trick parts. A 428CJ is a very expensive engine, the rods, crank, heads and block are unique to the engine. I have had a 428 for years and I could not afford to build a 428 powered car if I had to go buy one.
The steering linkage is different on the V8 cars but the parts are available. You'll need to purchase a shock tower reinforcement kit and weld it in. There has been a resurgance of interest in the FE series engine because of the Cobra roadster kit cars. All of this stuff is expensive and you can say it's "Rich Boy Toy" stuff. If you have the money you can even get an all aluminum 427 FE from Shelby in crate form. I don't know how much money you have to work with, but I guess you can get just about anything you want if money is no object. If you are just looking for more cubic inches for the money then a stroked Windsor is about the most economical way to go. What about a 385 series big block from say Ford Racing? You can get motor mount kits for them and parts are a little more reasonable than an FE. If I were going to put a big block in my pony that is what I would do. The 385 series is basically an enlarged Cleveland with the canted valve cylinder heads like the Cleveland and Boss engines. Well I hope you're sucessful with your project, any V8 is alot more performance than the inline six. All the best,---Chuck
I have a '67 hardtop with an original I6/200 CI and want to put in a 428 Super Cobra Jet. I'm not worried about space I just want to know if its worth the work?
you came to the wrong site. You know we're going to enable you.
From a logical perspective, it would be sensible to replace it with a 2.3L hybrid.
Quit joking around and throw in the 428.
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Woe to him who builds his palace by unrighteousness,his upper rooms by injustice,making his countrymen work for nothing...Does it make you a king to have more and more cedar?Did not your father have food and drink?He did what was right and just,so all went well with him. He defended the cause of the poor and needy,and so all went well...But your eyes and your heart are set only on dishonest gain,on shedding innocent blood and on oppression and extortion. Jer 22:13, 15-17
the 390 and 428 are the same block, think the only difference is the crank, so the weight and size are still the same issue. Look at a stroked windsor you can get easily 350 ponies on up to 500. My car was a 390 and am putting in 428 with really no changes. Today a small block ford (302 and 351) is now putting out more hp with less weight than any of the 390's and most 428's that were originally in the cars. Parts are a lot cheaper and easier to find too. The motor I am pulling out had 302hp down at the tires from a stroked windsor, the 390's back in 67-68 were 325 and 335 hp, can't remember which year had the higher hp 67 or 68. That was at the crank, you are looking at 15% min loss to get that to the tires, so maybe 280 would be at the tires back then. A 302 or windsor with less weight can easily place that much hp at the tires.
ok the 390 had a 4.05 bore and the 428 a 4.13 had to look that up but many of the parts are interchangeable, inlcuding crank. The 390s if thick enough can be bored out to 4.13 and you have a 428, size wise the blocks are the same as far as stuffing under the hood.
I can tell you now that I have over 7k into my 428 build without trans between machine work, alum top end, carb, new pistons, rings, arp fasteners, and still no water pump, valve covers, oil pan etc unless I wanted to run stock heads, intake and other stuff. Who ever said you had better have a lot of money above was dead on right.
Is it sensible to replace stock I6 with a 428 SCJ? 
