Water pump plug and nipple sizes
Thread Starter
Instructor
Joined: Jul 2017
Posts: 217
Likes: 21
Water pump plug and nipple sizes
I got a new water pump for the 383 stroker I'm installing. It didn't come with the nipple to connect the heater or the plug that goes in the top. What are sizes for those? Links to them would be super helpful also!
Thread Starter
Instructor
Joined: Jul 2017
Posts: 217
Likes: 21
It's this one, there aren't any stats on this page
https://blueprintengines.com/product...-satin-bpp1668
https://blueprintengines.com/product...-satin-bpp1668
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
caution:
pump in BP link is almost certainly a standard short pump and shows .625" (5/8") OD pilot
There's a standard short pump ... and a corvette short pump ... corvette short is a bit longer than standard short
All too often mistakenly swapped ... result is corvette pulleys & belts will fit but Never align or perform properly ... constant headaches!
Also, the standard short pump's pilot that extends into fan clutch ... often are too small OD for vette ... vette usually 3/4" OD and others often 5/8"
you can remedy with shims & bushing ... but why? ... suggest do it right first time & be done with it ... verify exactly what pump you have & need.
pump in BP link is almost certainly a standard short pump and shows .625" (5/8") OD pilot
There's a standard short pump ... and a corvette short pump ... corvette short is a bit longer than standard short
All too often mistakenly swapped ... result is corvette pulleys & belts will fit but Never align or perform properly ... constant headaches!
Also, the standard short pump's pilot that extends into fan clutch ... often are too small OD for vette ... vette usually 3/4" OD and others often 5/8"
you can remedy with shims & bushing ... but why? ... suggest do it right first time & be done with it ... verify exactly what pump you have & need.
Last edited by jackson; Nov 9, 2019 at 08:17 PM.
Thread Starter
Instructor
Joined: Jul 2017
Posts: 217
Likes: 21
caution:
pump in BP link is almost certainly a standard short pump and shows .625" (5/8") OD pilot
There's a standard short pump ... and a corvette short pump ... corvette short is a bit longer than standard short
All too often mistakenly swapped ... result is corvette pulleys & belts will fit but Never align or perform properly ... constant headaches!
Also, the standard short pump's pilot that extends into fan clutch ... often are too small OD for vette ... vette usually 3/4" OD and others often 5/8"
you can remedy with shims & bushing ... but why? ... suggest do it right first time & be done with it ... verify exactly what pump you have & need.
pump in BP link is almost certainly a standard short pump and shows .625" (5/8") OD pilot
There's a standard short pump ... and a corvette short pump ... corvette short is a bit longer than standard short
All too often mistakenly swapped ... result is corvette pulleys & belts will fit but Never align or perform properly ... constant headaches!
Also, the standard short pump's pilot that extends into fan clutch ... often are too small OD for vette ... vette usually 3/4" OD and others often 5/8"
you can remedy with shims & bushing ... but why? ... suggest do it right first time & be done with it ... verify exactly what pump you have & need.
https://www.summitracing.com/ga/part...model/corvette
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Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,391
From: At my Bar drinking and wrenching in Lafayette Colorado
The big hole in the top of the pump is 3/4-14 pipe (minor diameter is .974 or 59/64). The heater hose nipple threads are 1/2-14 pipe thread (minor diameter is .763 or 45/64).
https://www.summitracing.com/parts/sum-221102/overview/
https://www.summitracing.com/parts/r...-072/overview/
If you need the 90-degree fitting in the top hole for an L79 intake manifiold, you have to use a 2-piece pipe bushing to reduce it down to 1/2-14 pipe with the 90-degree fitting.
Lars
https://www.summitracing.com/parts/sum-221102/overview/
https://www.summitracing.com/parts/r...-072/overview/
If you need the 90-degree fitting in the top hole for an L79 intake manifiold, you have to use a 2-piece pipe bushing to reduce it down to 1/2-14 pipe with the 90-degree fitting.
Lars
Last edited by lars; Nov 10, 2019 at 03:04 PM.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Thanks, I'm headed to summit today to buy the correct one:
https://www.summitracing.com/ga/part...model/corvette
https://www.summitracing.com/ga/part...model/corvette
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
If it were me ... and in a hurry ... I try a local NAPA etc ... know your measured requirements.
If it were me ... Not hurried ... I'd get and ensure correct PN's ... and shop web.
If it were me ... Not hurried ... I'd get and ensure correct PN's ... and shop web.
Thread Starter
Instructor
Joined: Jul 2017
Posts: 217
Likes: 21
Yeah, I’m at summit right now but I don’t need the pump yet, still getting the transmission rebuilt. Thanks everyone for the info, I’m gonna wait and get the right one.
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,391
From: At my Bar drinking and wrenching in Lafayette Colorado
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,028
