Serpentine conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**FL71C10** · 01-02-2011, 01:45 AM

I am considering converting my engine accessories to a serpentine system. What do I need to look out for? Will any year fit my 75 impala 350 motor? I remeber seeing somewhere that a 4.3l 6 cyl has the same brackets. Is that so? I guess I'll have to chanmge out the ps hose fittings due to metric?

hugger6933 · 01-02-2011, 11:02 AM

Yes/ the 4.3 carry the same braket . They made a couple different one the most popular is the one from late 89 to 95 and far a s the steering hose difference just unscrew the fitting on the back of you r pump and put iit in the newer one or you can buy an adapter . This swap is high up on my list as well. Jim

allengator · 01-02-2011, 11:49 AM

I used the one from summit... A little pricey, but everything is clean and new!
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68 TT · 01-02-2011, 01:20 PM

Quote:

Originally Posted by FL71C10

I am considering converting my engine accessories to a serpentine system. What do I need to look out for? Will any year fit my 75 impala 350 motor? I remeber seeing somewhere that a 4.3l 6 cyl has the same brackets. Is that so? I guess I'll have to chanmge out the ps hose fittings due to metric?

I used the parts off an early 90's S-10 Blazer 4.3 and it all bolted up and fit great. Make sure you get the cooling fan too as the rotation is backwards from the non-serpentine systems. The bolt pattern is smaller to keep you from using the wrong one too.

vasquezmrysvll · 01-02-2011, 01:30 PM

im running one from a 88-92 camaro/bird 5.0/5.7. complete setup can be had for $100. check thirdgen.org classifieds.

**FL71C10** · 01-02-2011, 03:16 PM

Quote:

Originally Posted by 68 TT

I used the parts off an early 90's S-10 Blazer 4.3 and it all bolted up and fit great. Make sure you get the cooling fan too as the rotation is backwards from the non-serpentine systems. The bolt pattern is smaller to keep you from using the wrong one too.

Did you have any problems with the distance of the fan to the radiator?

**FL71C10** · 01-02-2011, 08:43 PM

Those of you that have converted to serpentine belt, what did you do with the smog pump? Or air pump?
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**FL71C10** · 01-03-2011, 12:54 AM

anyone?

gcburdic · 01-03-2011, 10:05 AM

Quote:

Originally Posted by FL71C10

Did you have any problems with the distance of the fan to the radiator?

JMHO....now would be a good time to upgrade to electric fans....there's a FAQ somewhere that show's you how on the cheap.....I'll try to post it for ya

**FL71C10** · 01-03-2011, 10:15 AM

Quote:

Originally Posted by gcburdic

JMHO....now would be a good time to upgrade to electric fans....there's a FAQ somewhere that show's you how on the cheap.....I'll try to post it for ya

That'd be great, thanks. I heard that they don't work as well as the factory clutch fan.

vasquezmrysvll · 01-03-2011, 01:28 PM

Quote:

Originally Posted by FL71C10

That'd be great, thanks. I heard that they don't work as well as the factory clutch fan.

im running dual 12" fans they come on at 195 and click off at 180, fans only run for 37 seconds on average while idling. not bad in my opinion?

68 TT · 01-03-2011, 01:09 PM

Quote:

Originally Posted by FL71C10

Did you have any problems with the distance of the fan to the radiator?

I ended up running an electric fan but the clutch fan cleared fine. The water pump is no deeper than a standard rotation pump.

I also modified a set of extra serpentine ribbed belt pulleys to fit an older engine with standard rotation accessories & water pump. I just had to drill a new bolt pattern in the water pump pulley and it all lined up. Much better high RPM belt retention than V-belts.

Alex Hayley · 01-03-2011, 01:05 AM

You can buy a smog pump delete pulley.
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**FL71C10** · 01-03-2011, 01:28 AM

Thanks, anyone know about the issue of distance to the radiator?
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gcburdic · 01-03-2011, 10:23 AM

I personally haven't done it, but here are a couple I got from the FAQ thread...
http://67-72chevytrucks.com/vboard/s...d.php?t=216128
http://www.67-72chevytrucks.com/vboa...d.php?t=254617

note that these threads are several years old and pricing may differ a little...
It seems from what I've read that a serp conversion and a electric fan setup goes hand in hand?!?!?
Hope it helps

01-02-2011, 01:45 AM	#1
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Serpentine conversion I am considering converting my engine accessories to a serpentine system. What do I need to look out for? Will any year fit my 75 impala 350 motor? I remeber seeing somewhere that a 4.3l 6 cyl has the same brackets. Is that so? I guess I'll have to chanmge out the ps hose fittings due to metric? __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

01-02-2011, 11:02 AM	#2
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,279	Re: Serpentine conversion Yes/ the 4.3 carry the same braket . They made a couple different one the most popular is the one from late 89 to 95 and far a s the steering hose difference just unscrew the fitting on the back of you r pump and put iit in the newer one or you can buy an adapter . This swap is high up on my list as well. Jim

01-02-2011, 11:49 AM	#3
allengator Registered User Join Date: Dec 2010 Location: Burleson, Texas Posts: 596	Re: Serpentine conversion I used the one from summit... A little pricey, but everything is clean and new! Posted via Mobile Device __________________ Allengator Outta the Blue (my band - available for hire in the DFW area!) 1980 Chevy SWB Pickup (build thread) 1951 Chevy Sedan Delivery 2004 Chevy Tahoe Z71 2011 Harley Davidson Street Glide 2018 Silverado Z71 Crew Cab

01-02-2011, 01:30 PM	#5
vasquezmrysvll "the other guy" Join Date: Oct 2008 Location: Olivehurst California 95961 Posts: 901	Re: Serpentine conversion im running one from a 88-92 camaro/bird 5.0/5.7. complete setup can be had for $100. check thirdgen.org classifieds. __________________ God Said,"Building A 10 Second Import Is Like Coming Out Of The Closet, In The End Ur Still....."EXPLETIVE"

01-02-2011, 08:43 PM	#7
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Serpentine conversion Those of you that have converted to serpentine belt, what did you do with the smog pump? Or air pump? Posted via Mobile Device __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now. Last edited by FL71C10; 01-03-2011 at 12:54 AM.

01-03-2011, 12:54 AM	#8
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Serpentine conversion anyone? __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

01-03-2011, 01:05 AM	#13
Alex Hayley Registered User Join Date: Jul 2000 Location: NC Posts: 987	Re: Serpentine conversion You can buy a smog pump delete pulley. Posted via Mobile Device

01-03-2011, 01:28 AM	#14
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Serpentine conversion Thanks, anyone know about the issue of distance to the radiator? Posted via Mobile Device __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

01-03-2011, 10:23 AM	#15
gcburdic Restoration Virgin! Join Date: Jan 2008 Location: Huntersville, NC Posts: 8,298	Re: Serpentine conversion I personally haven't done it, but here are a couple I got from the FAQ thread... http://67-72chevytrucks.com/vboard/s...d.php?t=216128 http://www.67-72chevytrucks.com/vboa...d.php?t=254617 note that these threads are several years old and pricing may differ a little... It seems from what I've read that a serp conversion and a electric fan setup goes hand in hand?!?!? Hope it helps __________________ Geoff with a G 1968 Chevy C10 SWB The Mistress 1972 Custom Deluxe C20 Suburban A Suburban Named Isabella 1966 Ford Mustang Mama's High School Graduation Present Last edited by gcburdic; 01-03-2011 at 10:24 AM.



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