What kind of motor is this?

[Anonymous]

My sister is buying a 77 Maverick with a straight 6. I haven't really got a chance to look at it, but I was checking out some horsepower numbers for it and I saw something like 77HP.....this must have been a typo.

I was wanting to know what kind motor this is, and what kind of horsepower it should make. Shurley it makes more than this! lol

Can you guys help me out?

Matt

 

[Patrick66]

probably not a typo...

in stock form these motors don't make much power. especially the later ones with lower compression and emissions stuff.

 

[CZLN6]

Howdy matt:

The six cylinder in your sis' Maverick will either be a 200 cu. in. or a 250 cu. in. engine. Both are quite reliable an reasonably economical, with good mid-car size and safety. Neither engine is a powerhouse, but that was not FoMoCos intent with these engines.

The assets of the little sixes is that they are simple and easy to work on and maintain. A '77 will have a pointless, electronic type ignition- much less maintance then the earlier point type ignitions.

Give us more details and we can be more exact in IDing what you have.

Adios, David

 

[250mav]

yea dont expect any speed demon out of the car. my '76 250 makes pretty good tq tho so i can still keep up with traffic. i pulled all the emissons crap of mine and put on a bigger carb and it helped. weight reduction does wonders too, like those bumpers lol

some good things about the car however is that it will already be 5 lug and have front disc brakes.

 

[Anonymous]

Thanks for the replies so far guys.

Like I said before I haven't had a chance to look at it, or even drive it. After I take it for the spin I'll give you guys a feedback. I have a couple inlines in my trucks, but they're just a little more powerful than 77HP.

I'm guessing clifford performance will be a good friend of mine as soon as she gets tired of it, lol.

Matt

 

[CZLN6]

Howdy Back:

The 170 six disappeared, as an option, in 1972, so Sis' six is either a 200 or a 250. A '75 200 and 250 were rated, at the rear wheels, aka net HP, at 84 and 92 respectively. With a C4, flywheel HP would be about 20 - 25% higher. A manual transmission will have less parasitic loss. Sis' '77 is about the same.

Both engines generated good torque readings; 200- 151 @ 1,800 rpms, 250- 180 @ 1,400 rpms.

Either engine can benefit from an additional bump to the initial advance setting of about 5 degrees over what stock specs call for.

Rather than Clifford, how about giving our host a look see for aftermarket parts. It's called Classic Inline and has a link at the top. Just a click away.

First check on what your Sis wants from her car, then ID what engine, trans, rear gear, and EPA systems are in place. How many miles?

Til then, help her with a good cleaning, both outside and inside the engine. Check all vacuum and fuel lines for leaks and repair. Check and replace all filters and add fresh oil.

Listen for lifter noise. If the engine has not been well maintained, it is likely that there will be some lifter noise. Fresh oil with a high detergent additive can help with mild lifter noise.

The oil passage holes in the shaft mounted rocker arm system can easily get gunked up to the point of closed. This is most likely in the front cylinders, which are farthest away from the source of the oil.

You likely knew all this, but it bears repeating. That should get you started. Keep us posted.

Adios, David

 

[Anonymous]

Thanks for the reply dave.

It only has 50K miles. My dad was the test driver and he told me about it. No lifter noise, runs like a top so I've heard. She's supposed to be getting it within this week, so I'll be sure to keep everyone updated about it.

He told me the first thing he's going to do is bump the timing and give it a little boost. I'll be sure to check out the classic inlines website after writing this and give it a once over.

I'm definatly going to keep an inline in it, I love them. The only thing I've got that doesn't have a six is a bronco, it's pretty much a mess around truck, and with a 351 it's got the torque of the 300 and the horsepower of a 302...pretty much best of both worlds if your not worried about gas.

I'd like to put a 300 in this truck, alot better platform to start out with, IMO, but I'd probably have to put a new tranny behind it too, am I right?
It has a C4, but maybe a different bellhousing would work?

I know I'm rambling, but I'm pretty excited about this old car, and I'm wanting to know more about it.

Again thanks for the replies so far, keep em' comming!

Matt

 

[mustang6]

You don't say exactly which 351 you have (351 Windsor, Cleveland, or Modified) but if it's a 351W (or 351C) it shares the same small block bellhousing as the 300 and 302. Only the 351M has a different bellhousing as it has the same big block pattern as the 400/429/460.

 

[Anonymous]

It's a Windsor...yep your exactly right.

What I was wondering though is if these motors have the same bellhousing as the larger 240 and 300 inlines. I was wanting to know if you could swap a 300 in place of the 200, or 250 that's in this Maverick. Performance wise I'd like to start out with a little better platform than the 200 or 250, I know everyone's heard the old saying "there's no replacement for displacement"....I guess it's the same way with an inline, right?

Matt

 

[250mav]

240/300's are alot taller and longer then the stock maverick engine bay was designed to handle so you will have some fabrication work ahhead of you but it has been done

 

[757-A_V_8_R]

Net horsepower is flywheel horsepower as the engine will sit in the car (with alt, exhaust manifolds, all pumps, etc). Gross (pre-1972) was also flywheel horsepower, but with open headers, and no accesories. (pretty much if the engine could run without it, they left it off for higher dyno numbers) This along with emmisions standards accounts for the dramatic loss in HP ratings during the 70's.

 

[Anonymous]

Yep, whenever I bought my first truck (a 73 F100) I couldn't believe it only put out 120 horsepower, but I guess it was not that huge of a drop considering all of the accessories that were added to the truck, plus an auto tranny.

Even though...it's proably only putting about 110 horsepower at the flywheel, give or take. There's definatly room for improvement IMO.

Matt