Small Block Intake

[Maddog]

I have a small block intake that came with a Carter AFB attached. The casting number looks to be 3799349 X (6,8,9 hard to define)

Also GM 1 and a 2-2-61 Could this be a casting date?

Is this a 283 intake or 327? Thought the AFB came out in 62 for the 300HP 327. Is a high rise compared to the old WCFB intakes I have seen.

I have had since 1963, so it is an older one.

Thanks

 

[ChevyHiPro]

From your casting number, 3799349 X, your manifold started out life as; 1962-1964, 327 CID, 300 HP, 4bbl, AFB (Carter).
I couldn't find any reference to the X at the end of the casting number.
The GM 1 number; of course GM = General Motors, 1 = is Chevy designation.
The third number on your manifold, 2-2-61, looks like a date code to us, but it doesn't exactly jive with the manufacture date.
Of course, it could be a date code, it would make sense these manifolds would be cast early in 1961, for 1962 model cars production.
The manifolds would have to be cast, finish machined and assembled, QA'd, then shipped and stocked at the engine assembly plant, the engines then assembled, tested and sent to the vehicle assembly plant, stuffed in a vehicle and shipped to a dealer for the new model roll out in late August or early September, 1961, for the 1962 model year.
So, possibly is a date code.

You were spot on, the Carter AFB first came out in 1962 on the 300 HP, 327 and was a some what hi rise manifold by comparison to the older styles.
And, that's exactly the manifold and carb you have there.

It would be cool to find a 327 to put this intake and carb on!
That'd be sweet!

Hope some of this info helps.

 

[Maddog]

It is on a 327 block 3782870 1962-1965 (250-375 hp) 1234 date code? Bought in 65 as crate short block to replace the blown 283. The heads were replaced also with 3814480 60-67 283/327 250HP

Getting ready to finish the restoration started in 1974 on the 59 Vette.

Thanks for the information/help

 

[ChevyHiPro]

Sounds like an exciting build!!
Don't be a stranger on the forum!
Check in from time to time and keep us posted on your progress!

If nothing else, let us know you haven't got much done, then we can harass you into getting out in the shop and getting some work done!!

:lol:

Good luck with your build!

 

[Maddog]

Just came back from checking my stash of old parts I have kept for years.

283 short block 3896948
327 short block 3782870
and a 4 bolt main 3970010 (blue in color) 400? Have to check the numbers as I thought all 400 were 2 bolt. Has a funky harmonic balancer end to the crank.

These are parts that need to be cleaned up and inspected. The 327 is .60 over. The other 2 are original bore...I think.

 

[ChevyHiPro]

Hello maddog!
So, let's see exactly what you've got in those engines!

3970010 - Block Casting Number - 1969, 302 cid, 290 HP, 4 bolt main
1969 - 1979, 350 cid, 145, 165, 175, 200, 245, 250, 255, 270, 295, 300, 330, 360, 370 HP, 2 & 4 bolt main (4 bolt main most common).
This is a very common Block Casting Number, cast from 1969 through 1979, it was primarily used for 350 cid
engines of many HP outputs (see above), far and away the majority of these engines were 4 bolt main.
It was made into a 302 in 1969 only.

3896948 - 1966 - 1967, 283 cid, 195 HP, 2 bolt main.

3782870 - 1961 - 1967, 327 cid, 250, 275, 300, 325, 340, 350, 360, 365, 375 HP, car & truck, 2 bolt main.

The 3970010 engine is definitely a 350 (it could possibly be a 302), but it is not a 400 block.
It could quite possibly have a 400 crank in it!
That would explain the 'funky' harmonic balancer.
The 400 crank was 'externally' balanced, had a weight on the flywheel and funky harmonic balancer (compared to other SBC's).

SO, here's some stock values for the three engines;
283 - 1957 - 1967, 3.875" bore x 3.00" stroke, main journal 2.300", rod journal 2.000", 2 bolt main.

327 - 1962 - 1967, 4.001" bore x 3.250" stroke, main journal 2.300", rod journal 2.000", 2 bolt main.

327 - 1968 - 1969, 4.001" bore x 3.250" stroke, main journal 2.450", rod journal 2.100", 2 bolt main.

350 - 1967 - 1999, 4.001" bore x 3.480" stroke, main journal 2.450", rod journal 2.100", 2 & 4 bolt main.

400 - 1970 - 1972, 4.125" bore x 3.750" stroke, main journal 2.650", rod journal 2.100", 4 bolt main.

400 - 1973 - 1980, 4.125" bore x 3.750" stroke, main journal 2.650", rod journal 2.100", 2 bolt main.

If you can get the casting number off the 'blue' engines, #3970010 (probably a 350) crankshaft, we can check that out and see what kind of a crankshaft it is.

BTW, on the front, passenger side of the block, just below where the head sits on the block, there should be a raised pad, that should have two rows of numbers hand stamped on it.
If you can post those numbers it will help identify those engines, what HP they originally were and what car they came in.
Those numbers were alternately hand stamped on the block just above the oil filter mount and/or on the bellhousing flange at the rear of the block, usually on the top of the flange or down on the drivers side.


Hope some of this help!

 

[Maddog]

Thanks, Good information!

 

[ChevyHiPro]

Your quite welcome, glad to help.

That dimensional information is historic, it don't change, it's the way these engines start out life.
Of course, we all conspire to change all that, boring, stroking, decking, centerline boring, ect, ect . . . .
:lol:

Good luck with your projects and don't be a stranger here!!
Stop in from time to time and post an update on what your doing with this shop full of vintage engines!!