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Post Info TOPIC: intakes oem


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intakes oem


Hi guys   my 283 has a 4 barrel intake pretty sure it was added on by last owner  no idea what it was off    3844459  gm 1     my 327 intake 3844457 gm 8   is there any difference besides casting numbers hp wize ?  Thanks again



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Addicted!

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3844459 is for 1965 . 327/300 hp and used on passenger , Chevelle and Corvette
3844457 is for 1965 . 327/250 hp and is a service replacement intake .


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 68 / 69  4 spd B bodies

 



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very interesting Thank you Howmac

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A Poncho Legend!

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Yes one will be made for a Rochester 4GC and one is for a Carter carb.



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1966 Strato Chief 2 door, 427 4 speed, 43,000 original miles


Poncho Master!

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The 4gcs had a small base square bore for most, Id say the 300 hp carter was an afb with a slightly larger square bore footprint, same size as the Holley and Edelbrock. The 300hp is likely the better one for the 337 imho.

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63 Pariesienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC. Parting out a 63 Parisienne convertible.

Mahone Bay, NS Still not old enough to need an automatic



Poncho Master!

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have they holley one ,its pattern is different than the charter but can be used in a pinch



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Thanks again guys glad I checked..

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Guru

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Hi all question !! I have been putting off my 327 40 over L 79 cam rebuild ,was wanting to put the carter carb and 300hp oem intake that is on my 283 on the 327..but really do you think I would really notice a big difference in hp if I just put the 250 hp intake and rochester quad on the 327 ? I think high end maybe not as good but really not going to be a race car or see much high end anyways..what do you think ?? Thank youi !!

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Poncho Master!

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I think the cam in a 63 327 250 and 300 hp was the same; the 250 had the same 2 inch manifolds as the 283, the 327 had 2.5 inch exhaust manifolds. The 283 and 327-250 had triangle heads (Power pack nickname), the 300 had camel humps. The 283 was a 2 barrel 195 HP; earlier than 62 you could get a 283 4 barrel with triangle heads , it was 230HP.

So what do you have for exhaust manifolds and heads? Depending on what you have, the HP stock varied from 250 to 300 on a 327, with most of the extra power coming from the heads and exhaust manifolds. To answer your question, I'd guess considering the variables, you're talking 20-30Hp difference? Likely not noticeable for driving on the street.

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63 Pariesienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC. Parting out a 63 Parisienne convertible.

Mahone Bay, NS Still not old enough to need an automatic

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