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-   -   Crate GoodWrench 350 Questions (https://67-72chevytrucks.com/vboard/showthread.php?t=630525)

LostMy65 09-14-2018 11:12 PM
Re: Crate GoodWrench 350 Questions
 
Quote:
Originally Posted by Warrens69GMC (Post 8344615)
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.
http://67-72chevytrucks.com/vboard/a...1&d=1534979379

SunSoaked 09-14-2018 11:25 PM
Re: Crate GoodWrench 350 Questions
 
Or a Duramax transplant :gi:

Warrens69GMC 09-15-2018 09:20 AM
Re: Crate GoodWrench 350 Questions
 
Quote:
Originally Posted by LostMy65 (Post 8344644)
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
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?

Warrens69GMC 09-15-2018 10:10 PM
Re: Crate GoodWrench 350 Questions
 
Quote:
Originally Posted by LostMy65 (Post 8345148)
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
Re: Crate GoodWrench 350 Questions
 
1 Attachment(s)
Quote:
Originally Posted by Warrens69GMC (Post 8344615)
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
Re: Crate GoodWrench 350 Questions
 
Quote:
Originally Posted by Warrens69GMC (Post 8344615)
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
Re: Crate GoodWrench 350 Questions
 
1 Attachment(s)
Quote:
Originally Posted by oldgold70c10 (Post 8345478)
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
Re: Crate GoodWrench 350 Questions
 
Quote:
Originally Posted by Warrens69GMC (Post 8345216)
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
Re: Crate GoodWrench 350 Questions
 
Quote:
Originally Posted by LostMy65 (Post 8343962)
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
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?

SunSoaked 02-09-2022 08:49 PM
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.

AcampoDave 02-09-2022 09:03 PM
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.

Warrens69GMC 02-09-2022 09:50 PM
Re: Crate GoodWrench 350 Questions
 
ZZ shortblock, summit vortec heads and a dual plane intake is the ticket right now


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