Is the crate 260hp enough ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dirish · 10-20-2016, 12:41 PM

I have read and read but..... who has the 260hp in a 4x4 blazer. All stock. Plan on keeping manifolds insted of headers.
opinions on a daily driver crate 350, looking at the 260hp. But..... is it enough? I don't need to race people I just want reliability and power to go the speed limit.
330hp is nice but don't want to go electric fuel pump.
Thank you in advance.

orange72blazer · 10-20-2016, 01:28 PM

Quote:

Originally Posted by dirish

I have read and read but..... who has the 260hp in a 4x4 blazer. All stock. Plan on keeping manifolds insted of headers.
opinions on a daily driver crate 350, looking at the 260hp. But..... is it enough? I don't need to race people I just want reliability and power to go the speed limit.
330hp is nice but don't want to go electric fuel pump.
Thank you in advance.

I have one in my Blazer but I pulled the heads & replaced them with some rebuilt vortec heads & replaced the cam with the Comp Cams XE268H. I did this when the engine was new so I have no idea how it ran stock but it runs awesome set up like I have it.

**72gmguy** · 10-20-2016, 01:43 PM

I'm sure the 260 horse motor has more power than any stock motor that ever came in a first gen blazer. They rated hp differently back then. Plus everything I've read recently about those motors is that they respond well to mods and are very durable. I just read an article not too long ago and I think they put a turbo charger one with low boost and it survived a bunch of dyno runs unscathed.

dirish · 10-20-2016, 01:49 PM

Quote:

Originally Posted by 72gmguy

I'm sure the 260 horse motor has more power than any stock motor that ever came in a first gen blazer. They rated hp differently back then. Plus everything I've read recently about those motors is that they respond well to mods and are very durable. I just read an article not too long ago and I think they put a turbo charger one with low boost and it survived a bunch of dyno runs unscathed.

Mine has a week original 350. I'm thinking anything would be better. Is the l31 vortex motor a simple drop in? I need a new intake, anything else?
Thanks!!

starterman99 · 10-20-2016, 02:17 PM

The L31 does not have fuel pump mounted on block so you would need electric fuel pump. also has one piece rear main oil seal so you would have to replace flywheel.

hemi43 · 10-20-2016, 05:32 PM

The 5.3 swaps that everyone is doing are only rated at just 300HP, and thats more than enough power. I guess it all depends on what you plan on doing with the truck. If you put an overdrive transmission behind that 260HP engine and 4.10 gears you'll be more than happy, IMHO.

bigdogz · 10-20-2016, 07:42 PM

Its plenty of power. I put it in mine and love it... I have a 4" lift and run 35s. I have headers on mine. If I had it to do over I would put the same motor in it.

dirish · 10-20-2016, 08:32 PM

Quote:

Originally Posted by bigdogz

Its plenty of power. I put it in mine and love it... I have a 4" lift and run 35s. I have headers on mine. If I had it to do over I would put the same motor in it.

Thanks, is that a th350? I believe I'm gonna order jegs kit .

bigdogz · 10-20-2016, 09:42 PM

Thats where mine came from. I bought the kit with carb.,distributor,intake. Little over 2k.

dirish · 10-21-2016, 03:39 PM

Just found this, looks like the bet for my needs.
Karlperformanceparts.com part number 10067353K3
Complete, any thoughts. I'm no mechanic so I'm trying to keep it simple.

BB72CHEVKT · 10-21-2016, 05:38 PM

Quote:

Originally Posted by dirish

Just found this, looks like the bet for my needs.
Karlperformanceparts.com part number 10067353K3
Complete, any thoughts. I'm no mechanic so I'm trying to keep it simple.

That is just he GM crate engine 10067353 with a gasket set.

dirish · 10-21-2016, 06:00 PM

Quote:

Originally Posted by BB72CHEVKT

That is just he GM crate engine 10067353 with a gasket set.

K3 kit comes carb to pan, water pump, starter.

10-20-2016, 12:41 PM	#1
dirish Registered User Join Date: Dec 2012 Location: Heart of Tennessee Posts: 1,120	Is the crate 260hp enough ? I have read and read but..... who has the 260hp in a 4x4 blazer. All stock. Plan on keeping manifolds insted of headers. opinions on a daily driver crate 350, looking at the 260hp. But..... is it enough? I don't need to race people I just want reliability and power to go the speed limit. 330hp is nice but don't want to go electric fuel pump. Thank you in advance.

10-20-2016, 01:43 PM	#3
72gmguy Senior Member Join Date: Mar 2009 Location: Brigantine NJ Posts: 821	Re: Is the crate 260hp enough ? I'm sure the 260 horse motor has more power than any stock motor that ever came in a first gen blazer. They rated hp differently back then. Plus everything I've read recently about those motors is that they respond well to mods and are very durable. I just read an article not too long ago and I think they put a turbo charger one with low boost and it survived a bunch of dyno runs unscathed. __________________ Jeremy 1969 Blazer 4x4 original cst 1971 Blazer partial 2wd convert 1972 Blazer 4x4 original cst 1970 Blazer 4x4 w/ 2 1/2in lift and 33in tires w/4 wheel camper 1970 4x4 suburban w/ 6in lift and 35in tires 1968 Corvette convertible 1970 Malibu convertible 1959 Brookwood wagon 1972 International Scout ii

10-20-2016, 02:17 PM	#5
starterman99 Registered User Join Date: Jun 2008 Location: santa maria,ca. Posts: 312	Re: Is the crate 260hp enough ? The L31 does not have fuel pump mounted on block so you would need electric fuel pump. also has one piece rear main oil seal so you would have to replace flywheel. __________________ 1957 3100 1950 5 window

10-20-2016, 05:32 PM	#6
hemi43 Registered User Join Date: Mar 2015 Location: Ontario Canada Posts: 1,523	Re: Is the crate 260hp enough ? The 5.3 swaps that everyone is doing are only rated at just 300HP, and thats more than enough power. I guess it all depends on what you plan on doing with the truck. If you put an overdrive transmission behind that 260HP engine and 4.10 gears you'll be more than happy, IMHO.

10-20-2016, 07:42 PM	#7
bigdogz Registered User Join Date: May 2014 Location: Summerville Ga Posts: 21	Re: Is the crate 260hp enough ? Its plenty of power. I put it in mine and love it... I have a 4" lift and run 35s. I have headers on mine. If I had it to do over I would put the same motor in it. Attached Images

10-20-2016, 09:42 PM	#9
bigdogz Registered User Join Date: May 2014 Location: Summerville Ga Posts: 21	Re: Is the crate 260hp enough ? Thats where mine came from. I bought the kit with carb.,distributor,intake. Little over 2k.

10-21-2016, 03:39 PM	#10
dirish Registered User Join Date: Dec 2012 Location: Heart of Tennessee Posts: 1,120	Re: Is the crate 260hp enough ? Just found this, looks like the bet for my needs. Karlperformanceparts.com part number 10067353K3 Complete, any thoughts. I'm no mechanic so I'm trying to keep it simple.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.