need new water pump or reuse the old one?
#1
Senior Member
Thread Starter
need new water pump or reuse the old one?
hello, ive searched for a while on the boards but for some reason i cant find this even though it seems to me like a question that would have been asked before lol
when replacing a 305 to 350HO vortec motor... if the 305's pump is in fine condition, do you need to replace the water pump? or are all small block pumps the same.. no matter the displacement or power of the motor etc. is it really required?
sorry if the question was asked before, but please lead me in the right direction
when replacing a 305 to 350HO vortec motor... if the 305's pump is in fine condition, do you need to replace the water pump? or are all small block pumps the same.. no matter the displacement or power of the motor etc. is it really required?
sorry if the question was asked before, but please lead me in the right direction
#2
Senior Member
Join Date: Jan 2002
Location: Chesapeake Va
Posts: 943
Likes: 0
Received 0 Likes
on
0 Posts
most of the sbc water pumps are the same, there are however some reverse rotation pumps out there for the serpentine belt system. if you are sure the pump you have is good and the rotation is correct then I don't see any problem with reusing it. if your motor is of the higher output variety you may want to consider on of the high flow pumps just because our cars have trouble getting enough air flow and tend to run hot.
#4
Supreme Member
Join Date: May 2002
Location: Texas
Posts: 1,332
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Z28 Convertible
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23 with Eaton posi
Agree with 86 redbird and dano
Find out from the motor manuf. what kind of watre pump is req. True, on the serpentine belt, the pump has to be rvs rotation. So going from the 305 to 350 should not make any difference is what style pump.
But, get a flashlight and look at the underside of your pump from under your car. There is a little hole about dead center behind where the pulley attaches. The 'weep' hole. If you see stains from coolant leakage from this hole, its time for a replacment anyway.
I got a alum/ hi-flow water pump from edelbrock (@ Year One). Works great. And since you are getting a 350, prob worth the $$.
But, get a flashlight and look at the underside of your pump from under your car. There is a little hole about dead center behind where the pulley attaches. The 'weep' hole. If you see stains from coolant leakage from this hole, its time for a replacment anyway.
I got a alum/ hi-flow water pump from edelbrock (@ Year One). Works great. And since you are getting a 350, prob worth the $$.
Thread
Thread Starter
Forum
Replies
Last Post
evilstuie
Tech / General Engine
22
01-09-2020 08:29 PM
Chuck84TA
Engine/Drivetrain/Suspension Parts for Sale
10
07-15-2016 09:05 PM