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#1
05-16-2003, 07:36 PM
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i bought a long block it is an 71" but i could not find the cast# in a book the # is 481990 the last # was hard to read i think it is a "0". it has 4X heads on it but front and back bolt holes for the exaust are not drilled on both heads was there a reason for this? Thanks for any help!
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#2
05-16-2003, 07:36 PM
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i bought a long block it is an 71" but i could not find the cast# in a book the # is 481990 the last # was hard to read i think it is a "0". it has 4X heads on it but front and back bolt holes for the exaust are not drilled on both heads was there a reason for this? Thanks for any help!
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#3
05-18-2003, 08:31 PM
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481990 is the block casting code for a 1971 350.
Was there a reason for the end holes not being there? Not really. Probably so the factory could save 2 cents. johnta1 Pontiac Power RULES !!! www.wallaceracing.com 
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#4
05-19-2003, 08:59 PM
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thank you. i was thinking about getting headers and was sure if i would have drill and tap the bolt holes?
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#5
05-19-2003, 09:43 PM
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If it's got the flange there,just not drilled,go ahead and drill and tap it.
If it's missing the flange altogether,look up Paul Spotts at Spottsperformance.com johnta1 Pontiac Power RULES !!! www.wallaceracing.com
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#6
05-23-2003, 01:28 PM
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thank you! i curently have a points ingition and want to change it to hei or pertronics magnetic pick up conversion kit do u know anything about these kit? or is hei better? i will have to check the heads for the flang, but i'm pretty sure there. thank u again.
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#7
06-03-2003, 09:27 AM
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Personally I would go with the HEI.
The Pertronix seems to be ok,except they make 2 versions.The one with the lobes is better I think. johnta1 Pontiac Power RULES !!! www.wallaceracing.com
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#8
06-21-2003, 09:28 PM
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thanks i went with the HEI and the engine runs a smoother and has more power.
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#9
06-21-2003, 09:28 PM
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thanks i went with the HEI and the engine runs a smoother and has more power.
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