L31 Crate Engine available again - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**tdangle** · 07-13-2020, 02:11 PM

I see they are available again with quite the price increase! No more $1800 long blocks.

https://www.gmperformancemotor.com/parts/12691672.html

Tom · 07-13-2020, 04:36 PM

And yet people will buy them vs just rebuilding.

**truckster** · 07-13-2020, 08:30 PM

Ouch! Did they go with the platinum pistons?

b454rat · 07-13-2020, 08:39 PM

wholly crap!!!! Id think I'd rather rebuilt one for that price. pretty sure I can get it rebuilt for less than that....wow.

geezer#99 · 07-14-2020, 12:08 AM

Jeg’s and Summit have reman L31’s much cheaper.

https://www.jegs.com/i/JEGS/059/0282/10002/-1

Likely be as good as a new one.

BB72CHEVKT · 07-14-2020, 02:12 PM

Almost everyone is going LS so all small block crates have increase due to lack of demand.

EVRLET · 07-15-2020, 04:13 AM

Careful with these crate L31s. I bought 4 at different times of the year and 3 out of the 4 had whining or crappy oil pumps that went out within months. They were all Melling pumps too. And don’t be fooled by the warranty. If you’re a DIYer, the amount of paperwork you have to submit and the time it takes for GM to approve warranty repair is ridiculous. After about 5 months of GM warranty crap, I just replaced the pump on my own and gave GM the finger.

68 P.O.S. · 07-16-2020, 02:02 PM

F that!!! You're most of the way to a better crate engine for that price smh

**LEEVON** · 07-16-2020, 02:28 PM

FYI these are being manufactured in Springfield MO now.

**Captainfab** · 07-16-2020, 09:55 PM

Are you talking about the new GM L31 crate engine, or the rebuilt L31's?

Quote:

Originally Posted by LEEVON

FYI these are being manufactured in Springfield MO now.

**Rickysnickers** · 07-17-2020, 10:31 AM

Wow!!

**LEEVON** · 07-17-2020, 03:15 PM

Quote:

Originally Posted by Captainfab

Are you talking about the new GM L31 crate engine, or the rebuilt L31's?

I was told ALL of the GMPP small blocks were consolidated here (and no more Mexico) although I only have personally seen the reman plant. Based on the timing of the price change it makes sense...

**mattfranklin** · 07-22-2020, 01:44 PM

Quote:

Originally Posted by Captainfab

Are you talking about the new GM L31 crate engine, or the rebuilt L31's?

It looks like the L31 at the Jeg's link was a new replacement, and they said they still have at least ten left at the $1800 price. So the sky's not falling, yet.

Kudzupatch · 07-22-2020, 02:05 PM

WOW is right! That dramatically change my plans.

I did a little math with my local machine shop a year ago and this engine made sense price wise. With all the machine work it was just 300-400 more for a brand new engine. For me and the fact it was pull one out, swap externals to new motor and slap it back it, it was worth the difference. Now looking at a grand difference or more...... not so much.

**tdangle** · 07-23-2020, 02:02 PM

Quote:

Originally Posted by mattfranklin

It looks like the L31 at the Jeg's link was a new replacement, and they said they still have at least ten left at the $1800 price. So the sky's not falling, yet.

Looks to me like that is for a rebuilt replacement.

geezer#99 · 07-23-2020, 06:01 PM

Says right in block information.
Seasoned block.
Easy to figure out what that means.

**truckster** · 07-23-2020, 06:38 PM

Quote:

Originally Posted by geezer#99

Says right in block information.
Seasoned block.
Easy to figure out what that means.

Salt and pepper? Basil and herbs?

Tom · 07-23-2020, 07:46 PM

Quote:

Originally Posted by geezer#99

Says right in block information.
Seasoned block.
Easy to figure out what that means.

Couple hours at 200* covered in olive oil?

Nobody seems to care that used blocks are better? Core shift is done and machined out during the rebuild.

**mattfranklin** · 07-24-2020, 12:30 PM

You guys are funny.
The best seasoning is McCormick's Montreal Seasoning.
I put it on everything from tritip to mushrooms to hamburgers ;-)

Wow, you're right! I totally missed it. That advert is sneaky.
It seems all new until you see the "1996-2000 seasoned OE block" in the details.
And the block has 2-bolt main caps.

EDIT:
on the plus side, Scoggin-Dickey has them for $2300 including shipping. Not $1800, but not bad, and not $3300.

https://sdparts.com/i-19928423-gm-en...IaAkXmEALw_wcB

**tdangle** · 07-24-2020, 01:43 PM

Quote:

Originally Posted by mattfranklin

You guys are funny.
The best seasoning is McCormick's Montreal Seasoning.
I put it on everything from tritip to mushrooms to hamburgers ;-)

Wow, you're right! I totally missed it. That advert is sneaky.
It seems all new until you see the "1996-2000 seasoned OE block" in the details.
And the block has 2-bolt main caps.

EDIT:
on the plus side, Scoggin-Dickey has them for $2300 including shipping. Not $1800, but not bad, and not $3300.

https://sdparts.com/i-19928423-gm-en...IaAkXmEALw_wcB

That is not a L31. It is a stock 350 with 2 piece rear main seal 76 cc heads

07-13-2020, 02:11 PM	#1
tdangle Senior Member Join Date: Mar 2005 Location: Jurupa Valley, Ca Posts: 1,209	L31 Crate Engine available again I see they are available again with quite the price increase! No more $1800 long blocks. https://www.gmperformancemotor.com/parts/12691672.html __________________ Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC

07-13-2020, 04:36 PM	#2
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,691	Re: L31 Crate Engine available again And yet people will buy them vs just rebuilding. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

07-13-2020, 08:30 PM	#3
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,794	Re: L31 Crate Engine available again Ouch! Did they go with the platinum pistons? __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

07-13-2020, 08:39 PM	#4
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,453	Re: L31 Crate Engine available again wholly crap!!!! Id think I'd rather rebuilt one for that price. pretty sure I can get it rebuilt for less than that....wow.

07-14-2020, 12:08 AM	#5
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,512	Re: L31 Crate Engine available again Jeg’s and Summit have reman L31’s much cheaper. https://www.jegs.com/i/JEGS/059/0282/10002/-1 Likely be as good as a new one.

07-14-2020, 02:12 PM	#6
BB72CHEVKT Junior Member Join Date: Mar 2007 Location: Hideaway, TX Posts: 4,948	Re: L31 Crate Engine available again Almost everyone is going LS so all small block crates have increase due to lack of demand. __________________ 71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400

07-15-2020, 04:13 AM	#7
EVRLET Registered User Join Date: Aug 2015 Location: Las Vegas NV Posts: 354	Re: L31 Crate Engine available again Careful with these crate L31s. I bought 4 at different times of the year and 3 out of the 4 had whining or crappy oil pumps that went out within months. They were all Melling pumps too. And don’t be fooled by the warranty. If you’re a DIYer, the amount of paperwork you have to submit and the time it takes for GM to approve warranty repair is ridiculous. After about 5 months of GM warranty crap, I just replaced the pump on my own and gave GM the finger. __________________ Customization is what you want it to look like -- not what other people think it should look like

07-16-2020, 02:02 PM	#8
68 P.O.S. Registered User Join Date: Jan 2007 Location: Puyallup, WA Posts: 1,661	Re: L31 Crate Engine available again F that!!! You're most of the way to a better crate engine for that price smh __________________ 72 C10 lwb fleetside -stock 350/350 combo

07-16-2020, 02:28 PM	#9
LEEVON Registered User Join Date: Jul 2006 Location: Ozark, MO Posts: 4,887	Re: L31 Crate Engine available again FYI these are being manufactured in Springfield MO now. __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids

07-17-2020, 10:31 AM	#11
Rickysnickers Senior Member Join Date: Oct 2014 Location: Eagle, ID Posts: 2,933	Re: L31 Crate Engine available again Wow!!

07-22-2020, 02:05 PM	#14
Kudzupatch Registered User Join Date: Apr 2013 Location: GUNTERSVILLE Posts: 621	Re: L31 Crate Engine available again WOW is right! That dramatically change my plans. I did a little math with my local machine shop a year ago and this engine made sense price wise. With all the machine work it was just 300-400 more for a brand new engine. For me and the fact it was pull one out, swap externals to new motor and slap it back it, it was worth the difference. Now looking at a grand difference or more...... not so much. Last edited by Kudzupatch; 07-22-2020 at 02:44 PM.

07-23-2020, 06:01 PM	#16
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,512	Re: L31 Crate Engine available again Says right in block information. Seasoned block. Easy to figure out what that means.

07-24-2020, 12:30 PM	#19
mattfranklin Senior Member Join Date: Dec 2011 Location: Moraga, CA Posts: 799	Re: L31 Crate Engine available again You guys are funny. The best seasoning is McCormick's Montreal Seasoning. I put it on everything from tritip to mushrooms to hamburgers ;-) Wow, you're right! I totally missed it. That advert is sneaky. It seems all new until you see the "1996-2000 seasoned OE block" in the details. And the block has 2-bolt main caps. EDIT: on the plus side, Scoggin-Dickey has them for $2300 including shipping. Not $1800, but not bad, and not $3300. https://sdparts.com/i-19928423-gm-en...IaAkXmEALw_wcB __________________ (Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340



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