Crate GoodWrench 350 Questions - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LostMy65 · 09-14-2018, 11:12 PM

Quote:

Originally Posted by Warrens69GMC

1978 Big 10, 165hp 350, TH350, 3.08 and 28" tires. Doesn't do too bad, except loaded and going uphill.

You might need 3.42 rear gears.

SunSoaked · 09-14-2018, 11:25 PM

Or a Duramax transplant

**Warrens69GMC** · 09-15-2018, 09:20 AM

Quote:

Originally Posted by LostMy65

You might need 3.42 rear gears.

I have a 1995 LT1 and 4L60E from a camaro, thinking of 3.73 gears as well.............🤔

LostMy65 · 09-15-2018, 08:47 PM

I've been doing research, is it true they built it with really low compression so the engine could use low octane gas?

**Warrens69GMC** · 09-15-2018, 10:10 PM

Quote:

Originally Posted by LostMy65

I've been doing research, is it true they built it with really low compression so the engine could use low octane gas?

The goodwrench 350? Yes that is partially true. They wanted a economical engine that could be put in most 1985 and under cars and trucks and pass emission standards everywhere. If the made a 350hp 350, it might not pass some emission requirements.

AcampoDave · 09-16-2018, 09:45 AM

Quote:

Originally Posted by Warrens69GMC

1978 Big 10, 165hp 350, TH350, 3.08 and 28" tires. Doesn't do too bad, except loaded and going uphill.

Agreed, mostly stock 283 with 225/75/15 tires and 3 on the tree. 3.08 is great

**oldgold70c10** · 09-16-2018, 11:24 AM

Quote:

Originally Posted by Warrens69GMC

1978 Big 10, 165hp 350, TH350, 3.08 and 28" tires. Doesn't do too bad, except loaded and going uphill.

My 78 big 10 is just like yours, stock 350/TH350 and 3:08, and will hold 70 with the AC on using the cruise going uphill with out any trouble.

**Warrens69GMC** · 09-16-2018, 12:12 PM

Quote:

Originally Posted by oldgold70c10

My 78 big 10 is just like yours, stock 350/TH350 and 3:08, and will hold 70 with the AC on using the cruise going uphill with out any trouble.

I agree. I was referring to it loaded AND going uphill. Like with a 1500 slide in camper and another 700lbs worth of stuff inside.

LostMy65 · 05-10-2021, 12:32 PM

Quote:

Originally Posted by Warrens69GMC

The goodwrench 350? Yes that is partially true. They wanted a economical engine that could be put in most 1985 and under cars and trucks and pass emission standards everywhere. If the made a 350hp 350, it might not pass some emission requirements.

I'm not sure why I missed this post before.
That totally makes sense. I just couldn't figure why they would deliberately build it to be a dog - It needs to pass emissions in every State in every car.
Here in Oregon anything around 1974 and older doesn't have to do an emissions test.

LostMy65 · 05-10-2021, 01:34 PM

Quote:

Originally Posted by LostMy65

Is there a way to know what horsepower version my GM Goodwrench 350 is?

I found this in another thread:
https://www.mortec.com/location.htm

LostMy65 · 02-09-2022, 06:10 PM

Is a stock gm Goodwrench 350 good 'as is' for a truck application where you are mainly concerned about fuel economy and low end torque?

SunSoaked · 02-09-2022, 08:49 PM

Mediocre. I had to swap to vortec heads, cam and headers so it could get out of it's own way.

AcampoDave · 02-09-2022, 09:03 PM

I think its fine however, these days a roller cam seems to be the hot ticket because of the new oil. I do fine with a 283 for just driving around so that 350 should be great for driving around. Especially if you have dual exhaust and a nice aluminium dual plane intake. I dunno I've seen many a smokey burnout from a stock Goodwrech 350 in a classic truck.

**Warrens69GMC** · 02-09-2022, 09:50 PM

ZZ shortblock, summit vortec heads and a dual plane intake is the ticket right now

09-14-2018, 11:25 PM	#27
SunSoaked Registered User Join Date: Dec 2011 Location: Yuma Arizona Posts: 1,525	Re: Crate GoodWrench 350 Questions Or a Duramax transplant

09-15-2018, 08:47 PM	#29
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: Crate GoodWrench 350 Questions I've been doing research, is it true they built it with really low compression so the engine could use low octane gas? __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 Last edited by LostMy65; 09-15-2018 at 09:00 PM.

02-09-2022, 06:10 PM	#36
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: Crate GoodWrench 350 Questions Is a stock gm Goodwrench 350 good 'as is' for a truck application where you are mainly concerned about fuel economy and low end torque? __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

02-09-2022, 08:49 PM	#37
SunSoaked Registered User Join Date: Dec 2011 Location: Yuma Arizona Posts: 1,525	Re: Crate GoodWrench 350 Questions Mediocre. I had to swap to vortec heads, cam and headers so it could get out of it's own way.

02-09-2022, 09:03 PM	#38
AcampoDave Registered User Join Date: Feb 2013 Location: central California Posts: 2,778	Re: Crate GoodWrench 350 Questions I think its fine however, these days a roller cam seems to be the hot ticket because of the new oil. I do fine with a 283 for just driving around so that 350 should be great for driving around. Especially if you have dual exhaust and a nice aluminium dual plane intake. I dunno I've seen many a smokey burnout from a stock Goodwrech 350 in a classic truck.

02-09-2022, 09:50 PM	#39
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,625	Re: Crate GoodWrench 350 Questions ZZ shortblock, summit vortec heads and a dual plane intake is the ticket right now __________________ 1969 307, t350 1950 Chevy Wagon 1978 Big 10 1967 C10, 250,3-OTT



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