the block casting is a 62-67, 327 truck or passenger car 250-375hp..the heads look like they are the smaller 283 heads which were used on 327.. they had small valve 1.75 intake 1.50 exhaust something like that with a 58cc chamber possible

 

can those heads be taken to the 2.02 size valve? how well do they flow?are they worth machining?

 

if infact they are the 283 heads which im not real sure, just look like they are.. No they can not be fitted with 2.02/1.60 valves.. I tried that many years ago with a set of 283 heads.. but for sure, need the casting numbers from the heads to be sure

 

the valve covers need to be removed to find the casting numbers correct?

if those are the 283 heads what would you guess the hp is at now with the assumed cam to go with those heads valve/lift etc. i will find out tues or wednesday on the casting on the head which i will then post, i will be too busy to check until then.

holley carb btw

 

can those heads be taken to the 2.02 size valve? how well do they flow?are they worth machining?

not really, you can buy a set of aftermarket heads complete for the price you would pay to have those machined.. Im sure the ports are really small on those as well

 

the valve covers need to be removed to find the casting numbers correct?

if those are the 283 heads what would you guess the hp is at now with the assumed cam to go with those heads valve/lift etc. i will find out tues or wednesday on the casting on the head which i will then post, i will be too busy to check until then.

holley carb btw

yes you will need to remove the valve covers.. the id number will be a like a 6 or 7 digit number.. the last three are the most important numbers we need to see what they are.. as far as HP the way it is.. maybe 200-250HP or so just guessing not really sure

 

bringing the motor up to my home garage tomorrow night will have an update on the heads late tomorrow evening.

 

they are 3998993 heads so they are the common big chamber head blech, what do you guys think of the RHS aftermarket heads via jegs? im looking for about 460 or so crank horsepower.

 

RHS heads 170cc intake runners would be fine, a guy did a dyo sim with a 327 .030 over using the RHS heads and made about 450 hp at 6000rpm and 450lbs of torque at 4500rpm with a mid upper range cam using these heads http://www.hotrodders.com/forum/sbc-heads-199090.html post #6

 

well there is a 235 cc intake, 220, 200, etc would it not behoove me to go bigger to start wih? the 235cc isn't that spendy in comparison.

 

235cc IMO is way to big for a 327.. you will loose low end torque 190cc would be the max I would go as far as intake runner size with a 64cc chamber.. these are just my suggestions, but you do what you would like to do.. If you had a 400sbc and were to do some racing with it, then the 235cc would be the ticket.. this is the head i was refering to http://www.competitionproducts.com/...om/RHS-Cast-Iron-Chev-SB-Vortec-Head-170cc_64cc-Bare-Each/productinfo/RHS12407/

 

will that work with this cam? also i dont really want much more than 400 ft lbs.

http://www.lunatipower.com/Product.aspx?id=1966&gid=284

 

Marine motor

its a 327 block after looking up the numbers but I can not find the head numbers you posted. But you have a 327 only block not a 283 62-67.

 

will that work with this cam? also i dont really want much more than 400 ft lbs.

http://www.lunatipower.com/Product.aspx?id=1966&gid=284

That cam will work just fine with the RHS heads I was referring to

 

The heads you have now what I have found is that they are 350 heads with small runners and valves and a big combustion chamber like 75cc If I remember right from what I read

 

993 Heads>> http://www.chevytech.info/3c3998993.html

Other Head Info.> http://www.chevytech.info/3c10.html

 

So I've been looking at heads and intakes all day this is what I came up with. looking for 450-460ish crank hp or so at 7000rpm

regardless;
327 small journal motor
this cam
http://www.lunatipower.com/Product.aspx?id=1966&gid=284
between 10:1 and 10.5:1 compression (whatever pistons I may need for that)
----------
I have two different head/intake combos I have come up with

1.
Intake
http://www.jegs.com/i/Edelbrock/350/5001/10002/-1

Heads
http://www.jegs.com/i/Patriot+Performance/723/2168/10002/-1

OR

2.
Intake
http://www.jegs.com/i/Edelbrock/350/7516/10002/-1

Heads
http://www.jegs.com/i/Patriot+Performance/723/2151/10002/-1

Which setup do you think I will be better off with for my power goals?

 

i guess it would be better to post a different thread with those specs...

 

327 identification

Dear Colleagues,
I'm so sorry that I'm refreshing such old topic, but I can't find any information about what engine I got
I would like to know hom much HP it has?

Any ideas? Only thing I know that it's a industry engine
Thank you.

 

Dear Colleagues,
I'm so sorry that I'm refreshing such old topic, but I can't find any information about what engine I got
I would like to know hom much HP it has?

Any ideas? Only thing I know that it's a industry engine
Thank you.

You have a cross-up of numbers and codes, so it is hard to say for sure exactly what you have..

The "3970010" casting number is for a 4" bore block, from 1969-1979, and used to make either '69 327 or '69-79 350 engines, and could be machined either for 2 or 4 bolt mains

The "S" in the S0415CFA stamped code is for "Saginaw Service" plant, the "0415" is fourth month, fifteenth day....but the "CFA" code comes up as either '82 or '85 305 engine, - which is not possible according the block casting #

Codes posted online and in code books typically are for just production car and truck engines and not industrial/marine/agricultural applications....so that may be the reason the code application does not jibe with the block casting info.

My best guess is that you have a industrial 350, likely 4-bolt main....but you will probably have to open it up and check bore size and crank casting number to truly know for sure exactly what you have.

Head casting number, from under the valvecovers, could provide more clues.

Heads appear to be the late '69-70 "Camel Hump" type head, just from the two hump identifier in the pic showing the stamped codes.

327 or 350 with these heads in an industrial engine is usually a 230-250 hp engine...but a real good starting point for a hot rod engine. Usually have forged steel cranks instead of cast iron.

 

. WHERE are you located? Need more info... is it a Chevy engine? a V8? Approximate year? full picture? type of equipment used on? Casting number under valve cover? Any info on block next to distributor?

, BTW, as to original poster, 327" marine engines of that era were usually rated about 225 HP... but the crappy newer heads somebody swapped on prolly knocked it down under 200 HP... took away 'planing off' torque...

 

. The -010 casting block was originally cast of the best iron alloy, but after 1971 and with smog engines making little power anymore, GM no longer cared what they were cast with...

 

Thank you so much for so fast information
Next pictures

I will check the number on the heads.
And what is odd On the oil dipstick it has a German words

 

The heads are camel hump heads, which are obvious in the picture. They look to be the 186 castings but hard to tell by sight.
The block was cast during the day shift, as indicated as the arrow points at "D"
THe clock indicates it was cast around 5 o'clock. THe date code will be on the bell housing area as well. It will look like this example: A 5 9
A is the month, January. 5 is the date, the 5th, 9 is the year, 1969, 79, 89, You'll know which year by checking the block's casting number and the years it was cast.