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water necks/ thermostat housings & bolt sets -Corvette-
(note "-" means through)
order now/ pricing
see section 21 on catalog page/schematic |
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#21-05B |
63-65
340-375hp
(pictured with stud kit #21-08b) |
(#...370)
* |
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#21-05H |
66-67
300hp,
all 427 except L88
(pictured with stud kit #21-08c)
#3877660 number on neck and indents on base:
(#'s came both ways from factory, we only have # on base)
*66 300 uses this
housing - the NCRS manual is incorrect (does not used cast iron)**66
300 NCRS note |
(#...660) |
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#21-05J |
63-65
327/250-300hp,
66-67 327/350hp,
65 396
67 L88
(pictured with stud kit #21-8a 63-65)
(pictured with stud kit #21-8dr 396/l88)
*66 300 NCRS note |
(#..369) |
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#21-08a |
therm housing bolt set (for
#21-05J)
63-65 250 - 300hp and 66-67 350 hp
1 long 'tr' + 1 short 'tr' |
63-65,66-67 |
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#21-08b |
therm housing STUD set (for
#21-05B)
63-65 HIPER (340,350,360,365, 375hp) |
63-65 |
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#21-08c |
therm housing bolt set (for
#21-05D,05H)
66-67 ALL EXCEPT 350HP 66-67 427
1 long 'tr' + 1 short 'tr' |
66-67 |

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#21-08d |
therm. housing bolt
set (replacement)
(no headmarks) 65 396 & 67 L88 |
65 396
67 L88 |
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| #21-08E |
Therm. housing bolts
(427 a.i.r. with spacer)
1 long 'tr' + 1 short 'tr' |
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-#21-05H
*note NCRS stated 66 300 hp uses a cast iron housing
(#21-05j) We do not believe this is accurate - the Chevrolet parts book and
Dobbins Book original car photos page 165 - concur with our application
definitions.)
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*21-05b(this
part is correct in appearance except it is stainless steel
63,64,65,66,67,c2 Corvette Parts
"Enter This # online
to order or get # --#21-08c
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