Number on engine. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skokie · 01-28-2005, 02:23 AM

While I was tinkering on my engine tonight I noticed a number on a pad in the front of the block. The number is 1M0 5MP. What does that number mean?

Thanks

GMC AMI · 01-28-2005, 07:18 AM

Quote:

Originally Posted by skokie

While I was tinkering on my engine tonight I noticed a number on a pad in the front of the block. The number is 1M0 5MP. What does that number mean?

Thanks

It would appear that the engine may be a 283? It would be better if it was a 302 than you my friend would have a valuable engine, IMO.
http://www.nastyz28.com/spmenu.html

Blue Beard · 01-28-2005, 08:05 AM

Why is the 302 a valuable motor? I can remember them being very common place.

GMC AMI · 01-28-2005, 12:35 PM

Quote:

Originally Posted by Blue Beard

Why is the 302 a valuable motor? I can remember them being very common place.

I was thinking 302 z-28 engines were not too common. It would be real valuable to a Camaro restorer. BB do you know where there are any? Thanks,
Mike.

dons454s · 01-28-2005, 01:01 PM

my book only list it as a 67 camaro 302

skokie · 01-28-2005, 02:10 PM

Mike thanks for the info. The casting number on the back pad is 10066036 and according to mortec it a 350...........2 or 4...Target Master/Goodwrench crate motor, 2-piece rear seal, "Hecho en Mexico"

I wish it was a 302

I thought that number was the model number or something. By the way what is a target master? I did a search on google and just found casting numbers.

toms68cst · 01-28-2005, 02:30 PM

My engine-casting number book lists the 3914678 block for my 327 as also applying to 68-69 302 camaro/z28 in addition to other passenger cars and trucks.

A302 is just a de-stroked 327/350 right? It was fairly high reving performance engine for the z28 if I remember.

Longhorn Man · 01-28-2005, 03:53 PM

Blue...the ford 302 is as common as parking lot gravel...and all chevy verses ford stuff asside, a good little motor too.
The Chevy 302 was only built for the first gen camaros, and only installed in Z-28 optioned cars. While it was basicly a destroked 327...it was quite a bit more involved than that.

GMC AMI · 01-28-2005, 04:26 PM

Quote:

Originally Posted by skokie

Mike thanks for the info. The casting number on the back pad is 10066036 and according to mortec it a 350...........2 or 4...Target Master/Goodwrench crate motor, 2-piece rear seal, "Hecho en Mexico"

I wish it was a 302

I thought that number was the model number or something. By the way what is a target master? I did a search on google and just found casting numbers.

That is why it is important to have both sets of numbers,suffix and block casting #s to tell for certain. I think GM started using some of the suffix #'s over. The crate motors you can buy from GM as replacements.

beautimus · 01-28-2005, 05:47 PM

By the way what is a target master?

target master was a performance street small block that chevy used to make (or maybe they still do) it was a factory crate motor. it wasn't factory equipment on any car , you had to get them from a chevy dealer.
they are pretty good little small blocks for a street engine.

Longhorn Man · 01-28-2005, 06:52 PM

a performance rep[lacement motor?
I thought it was more of a generic replacement motor for anything from the family station wagon to work truck motor.

beautimus · 01-28-2005, 11:22 PM

a performance rep[lacement motor?
I thought it was more of a generic replacement motor for anything from the family station wagon to work truck motor.

you could be right about the performance part of the thing there Andy but the only ones of them that i have been around would run like a scaulded dog.
(lots of torque and ponies) i have never tried to buy one, so i was assuming the performance part, as far as how chevrolet classified it.
i would like to have a new one for the old rust bucket but i have to settle for rebuilding the big block i got from cadiac ....
Tony

Tx Firefighter · 01-28-2005, 11:42 PM

You can buy a Goodwrench engine for about 1200 bucks from your local dealership. They are a good quality, 4 bolt main 350 engine, 100 percent brand new with 3 year 50k mile warranty.

They are dead nuts generic though. Not a performance engine by any means.

skokie · 01-29-2005, 12:42 AM

Tx Firefighter
I belive thats whats in there now. Well according to mortec anyway.

Thanks to all.

*Randy70C-10* · 01-29-2005, 10:44 AM

Quote:

Originally Posted by Longhorn Man

Blue...the ford 302 is as common as parking lot gravel...and all chevy verses ford stuff asside, a good little motor too.

It can't be bad, it's still American built!!

GMC AMI · 01-30-2005, 08:16 AM

I have a crate motor in my lifted 68 and it runs fairly well. IMO any 350 71 and earlier will out run the reg. non-al head crate motors hands down. I have been spoiled by too many GM BBs
so SBs are OK but once you have had a tatse of BB torque, MMM MMM good!

Tx Firefighter · 01-30-2005, 09:53 AM

You know Mike, I've heard that stuff about big blocks my whole life.

I built a couple of these trucks with big blocks, one a 396 and the other a 454. It's just not for me.

I like small blocks, I can afford small blocks, and they're much easier to do. All the accesories are so much easier to find for a small block. Neither of my big blocks (both bone stock internally) were very impressive.

GMC AMI · 01-30-2005, 11:35 AM

Quote:

Originally Posted by Tx Firefighter

You know Mike, I've heard that stuff about big blocks my whole life.

I built a couple of these trucks with big blocks, one a 396 and the other a 454. It's just not for me.

I like small blocks, I can afford small blocks, and they're much easier to do. All the accesories are so much easier to find for a small block. Neither of my big blocks (both bone stock internally) were very impressive.

I did not think that much of a 396 I had put in my 71 GMC 4x4 either TX.
Note I posted GM BB motors. OLDS 455, Buick 455, Caddy 472+500 and once a 425 Olds in a short bed 79 Chevy. These are more the BB I have used in trucks. I fooled around a lot at Oxford Plains Dragstrip when younger. Chevys
can be built up, I did not want to spend a lot so I went with the other GM BBs. Now I do keep the original small blocks in the trucks and agree with you
100% on your opinion on small blocks. Thanks for your input Kevin.

Longhorn Man · 01-30-2005, 11:46 AM

yeah...GM big blocks are cool.

poink 71 chev · 01-31-2005, 08:20 PM

I have put many Targetmaster 366 in school buses and the Targetmaster IS just a very nice crate engine, not performance but easy to install. Its pretty much complete less intake and accessories.

01-28-2005, 02:23 AM	#1
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,334	Number on engine. While I was tinkering on my engine tonight I noticed a number on a pad in the front of the block. The number is 1M0 5MP. What does that number mean? Thanks __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

01-28-2005, 08:05 AM	#3
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	Why is the 302 a valuable motor? I can remember them being very common place. __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

01-28-2005, 02:10 PM	#6
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,334	Mike thanks for the info. The casting number on the back pad is 10066036 and according to mortec it a 350...........2 or 4...Target Master/Goodwrench crate motor, 2-piece rear seal, "Hecho en Mexico" I wish it was a 302 I thought that number was the model number or something. By the way what is a target master? I did a search on google and just found casting numbers. __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

01-28-2005, 02:30 PM	#7
toms68cst Registered User Join Date: Jun 2000 Location: Bismarck, ND Posts: 4,282	My engine-casting number book lists the 3914678 block for my 327 as also applying to 68-69 302 camaro/z28 in addition to other passenger cars and trucks. A302 is just a de-stroked 327/350 right? It was fairly high reving performance engine for the z28 if I remember. __________________ Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club.

01-28-2005, 05:47 PM	#10
beautimus Registered User Join Date: Mar 2002 Location: woodstock, alabama, usa Posts: 938	By the way what is a target master? target master was a performance street small block that chevy used to make (or maybe they still do) it was a factory crate motor. it wasn't factory equipment on any car , you had to get them from a chevy dealer. they are pretty good little small blocks for a street engine. __________________ i survived cancer and kidney stones, but my kids are killing me.

01-28-2005, 01:01 PM	#5
dons454s Registered User Join Date: Nov 2004 Location: Claysburg, Pa Posts: 408	my book only list it as a 67 camaro 302

01-28-2005, 03:53 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Blue...the ford 302 is as common as parking lot gravel...and all chevy verses ford stuff asside, a good little motor too. The Chevy 302 was only built for the first gen camaros, and only installed in Z-28 optioned cars. While it was basicly a destroked 327...it was quite a bit more involved than that.

01-28-2005, 06:52 PM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	a performance rep[lacement motor? I thought it was more of a generic replacement motor for anything from the family station wagon to work truck motor.

01-28-2005, 11:22 PM	#12
beautimus Registered User Join Date: Mar 2002 Location: woodstock, alabama, usa Posts: 938	a performance rep[lacement motor? I thought it was more of a generic replacement motor for anything from the family station wagon to work truck motor. you could be right about the performance part of the thing there Andy but the only ones of them that i have been around would run like a scaulded dog. (lots of torque and ponies) i have never tried to buy one, so i was assuming the performance part, as far as how chevrolet classified it. i would like to have a new one for the old rust bucket but i have to settle for rebuilding the big block i got from cadiac .... Tony __________________ i survived cancer and kidney stones, but my kids are killing me.

01-28-2005, 11:42 PM	#13
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	You can buy a Goodwrench engine for about 1200 bucks from your local dealership. They are a good quality, 4 bolt main 350 engine, 100 percent brand new with 3 year 50k mile warranty. They are dead nuts generic though. Not a performance engine by any means. __________________ I'm on the Instagram- @Gearhead_Kevin

01-29-2005, 12:42 AM	#14
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,334	Tx Firefighter I belive thats whats in there now. Well according to mortec anyway. Thanks to all. __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

01-30-2005, 08:16 AM	#16
GMC AMI Registered User Join Date: Apr 2004 Location: The Other Maine! Posts: 2,236	I have a crate motor in my lifted 68 and it runs fairly well. IMO any 350 71 and earlier will out run the reg. non-al head crate motors hands down. I have been spoiled by too many GM BBs so SBs are OK but once you have had a tatse of BB torque, MMM MMM good! __________________ 1968 Chevy 4x4 307 4 speed Last edited by GMC AMI; 01-30-2005 at 08:28 AM.

01-30-2005, 09:53 AM	#17
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	You know Mike, I've heard that stuff about big blocks my whole life. I built a couple of these trucks with big blocks, one a 396 and the other a 454. It's just not for me. I like small blocks, I can afford small blocks, and they're much easier to do. All the accesories are so much easier to find for a small block. Neither of my big blocks (both bone stock internally) were very impressive. __________________ I'm on the Instagram- @Gearhead_Kevin

01-30-2005, 11:46 AM	#19
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	yeah...GM big blocks are cool.

01-31-2005, 08:20 PM	#20
poink 71 chev Registered User Join Date: Nov 2004 Posts: 55	I have put many Targetmaster 366 in school buses and the Targetmaster IS just a very nice crate engine, not performance but easy to install. Its pretty much complete less intake and accessories.



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