A big, light, 5.0 Ford engine.

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pdq67
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A big, light, 5.0 Ford engine.

Post by pdq67 » Fri Sep 29, 2017 9:54 pm

Maybe I asked this before, I forget?

How big a 5.0 Ford engine can you build using either an aftermarket cast-iron/ductile-iron or an aluminum block?

A max. cube, small, lightweight engine. One that could be installed in a rear wheel drive Chevette 3-door. And I know a SBC will fit too, but whatever...

I'm dreaming again is all..... He, He!!

pdq67

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Re: A big, light, 5.0 Ford engine.

Post by Joe-71 » Fri Sep 29, 2017 10:01 pm

4.185 x 4.185 x 3.5" x 6.2832 = 385.159 cubic inches with Dart block. More stroke will give larger cubes, and a Man-O-War block at 4.200" bore will also. Joe-71

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Re: A big, light, 5.0 Ford engine.

Post by paulzig » Sat Sep 30, 2017 12:00 am

pdq67 wrote:
Fri Sep 29, 2017 9:54 pm
Maybe I asked this before, I forget?

How big a 5.0 Ford engine can you build using either an aftermarket cast-iron/ductile-iron or an aluminum block?

A max. cube, small, lightweight engine. One that could be installed in a rear wheel drive Chevette 3-door. And I know a SBC will fit too, but whatever...

I'm dreaming again is all..... He, He!!

pdq67
The easiest way with off the shelf parts would be a 4.125" bore and a 3.4" stroke in a Dart block to make a 363.. There is an off the shelf 3.5 crank and a shelf 4.165 piston so that will get you a 381 odd... You can go more with all custom parts, and grinding for clearance

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Re: A big, light, 5.0 Ford engine.

Post by fastblackracing » Sat Sep 30, 2017 12:16 am

If you step up to a 351 based block you can to 450+ inches with only a
small physical size increase and the cost would be very close to the 5.0 build.

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Re: A big, light, 5.0 Ford engine.

Post by plovett » Sat Sep 30, 2017 7:05 am

fastblackracing wrote:
Sat Sep 30, 2017 12:16 am
If you step up to a 351 based block you can to 450+ inches with only a
small physical size increase and the cost would be very close to the 5.0 build.
I would say the 351 block is considerably larger and heavier.

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Re: A big, light, 5.0 Ford engine.

Post by DaveMcLain » Sat Sep 30, 2017 8:24 am

The largest 8.200 deck small Ford that I've seen in person was a 410 inch one that Scott Main built for the Engine Masters. He did that because he wanted to be able to use an after market block along with the CHI heads. This made his engine a "Boss 302" based build which allowed the use of a Windsor style block.

His engine ran very well and survived the contest no problem.

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Re: A big, light, 5.0 Ford engine.

Post by peejay » Sat Sep 30, 2017 8:35 am

plovett wrote:
Sat Sep 30, 2017 7:05 am
fastblackracing wrote:
Sat Sep 30, 2017 12:16 am
If you step up to a 351 based block you can to 450+ inches with only a
small physical size increase and the cost would be very close to the 5.0 build.
I would say the 351 block is considerably larger and heavier.
Aftermarket 8.2 deck blocks aren't lighter than 351W blocks, for practical purposes. Maybe a couple pounds give or take, but not significantly so. It isn't that the 351W is heavy, it's that Ford shaved a few too many pounds of the production 8.2 blocks.

4.185" with a 3.6-3.7" stroke crank is the largest I've heard from a 8.2 deck block.

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Re: A big, light, 5.0 Ford engine.

Post by Caprimaniac » Sat Sep 30, 2017 9:12 am

Say aftermarket aluminum block. % weight gain from 8.2 to 9.5" deck is smaller than the gains in cubes say 380 to 460 cui and potential n/a hp.
How to turn GURU in an instant.....

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Re: A big, light, 5.0 Ford engine.

Post by plovett » Sat Sep 30, 2017 10:19 am

peejay wrote:
Sat Sep 30, 2017 8:35 am
plovett wrote:
Sat Sep 30, 2017 7:05 am
fastblackracing wrote:
Sat Sep 30, 2017 12:16 am
If you step up to a 351 based block you can to 450+ inches with only a
small physical size increase and the cost would be very close to the 5.0 build.
I would say the 351 block is considerably larger and heavier.
Aftermarket 8.2 deck blocks aren't lighter than 351W blocks, for practical purposes. Maybe a couple pounds give or take, but not significantly so. It isn't that the 351W is heavy, it's that Ford shaved a few too many pounds of the production 8.2 blocks.

4.185" with a 3.6-3.7" stroke crank is the largest I've heard from a 8.2 deck block.
A 351W is also larger, specifically wider and taller. In a Chevette that might be important. That might be why the original poster was asking about 5.0 (8.2") based blocks.

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Re: A big, light, 5.0 Ford engine.

Post by cab0154 » Sat Sep 30, 2017 11:14 am

there is also a point of diminishing returns in terms of power extra stroke will make. the most I would run on an 8.2 would be 3.5, but even then I don't think it would run that much better than turning a 3.4 more rpm.

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Re: A big, light, 5.0 Ford engine.

Post by fastblackracing » Sat Sep 30, 2017 5:53 pm

Go to the bottom right side for exterior dimensions.

Apparently oil pan issues and a heavy front end weight percentage are 2 of the biggest issues with this swap.

PDQ I get a kick out of your posts....if we were close I would help you get your High rpm sbc camaro up and running.....sounds like a fun car to bomb around in......Pretty sure the chevette would be undrivable with any real amount of power and not doing major surgery to set the engine back and rear tubs/good suspension in the rear.

Best wishes.FBR

https://performanceparts.ford.com/downl ... nsions.pdf


SBC for reference.....


http://www.enginefactory.com/chevdimensions.htm

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Re: A big, light, 5.0 Ford engine.

Post by pdq67 » Sat Sep 30, 2017 8:32 pm

fastblackracing wrote:
Sat Sep 30, 2017 5:53 pm
Go to the bottom right side for exterior dimensions.

Apparently oil pan issues and a heavy front end weight percentage are 2 of the biggest issues with this swap.

PDQ I get a kick out of your posts....if we were close I would help you get your High rpm sbc camaro up and running.....sounds like a fun car to bomb around in......Pretty sure the chevette would be undrivable with any real amount of power and not doing major surgery to set the engine back and rear tubs/good suspension in the rear.

Best wishes.FBR

https://performanceparts.ford.com/downl ... nsions.pdf


SBC for reference.....


http://www.enginefactory.com/chevdimensions.htm
fbr,

I'm glad you do.

Then how about a Vega hatch or Monza 2+2? (And I bought a new '75, Monza 2+2 V-8 4-speed, posi- back then. Engine was a POS, BUT it was a SBC!)...

And use an aluminum 5.0 block and heads for max. weight reduction.

pdq67

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Re: A big, light, 5.0 Ford engine.

Post by Mark O'Neal » Sat Sep 30, 2017 11:58 pm

The biggest 5.0 engine you can build, would be 5.0.. :P

pdq67
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Re: A big, light, 5.0 Ford engine.

Post by pdq67 » Sun Oct 01, 2017 6:19 am

Just word semantics Mark, but right.

In other words, an aluminum block at say 4.125" b x 3.4" s would be about the easiest/cheapest to make, but not the largest using the 5.0 type 8.2" deck height block.

Make a 363.5" engine.

pdq67

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Re: A big, light, 5.0 Ford engine.

Post by mag2555 » Sun Oct 01, 2017 7:04 am

Ductile iron block?

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