[lizardking7750]

He also has 462s should I trade with him, will these heads be able to make my 400 HP goal?

[cobalt327]

X2 on not recognising the 370 heads.

With the right combo you might get at least close to 400 HP, I just don't know if you can do it on pump gas. It WILL take a lot of cam- more than it would w/Vortec heads, that's for sure- so driveability will be compromised and you will need a low gear and loose TC.

The fulie heads are older than dirt, to be sure they are actually usable is important, and unless before purchase you can take them to a machinist and have them checked for cracks and condition (on your dime) I wouldn't want them, personally.

[RustoRod]

It can get expensive reconditioning old heads. If the 462 heads are in good shape they will work better than the 441's but they are not a 400 hp head in stock form.

[Duntov]

Originally Posted by techinspector1

441 heads have 155cc intake runners, 76cc chambers and the following flow numbers....

0.100 55/45
0.200 110/83
0.300 160/118
0.400 194/133
0.500 201/146
0.600 203/148

They do not appear to me to be a good foundation for a 400 hp 350 motor.
.

HEY TECH!!! I saw you had these numbers and was impressed..Not with the numbers, but the fact you have them.. Hoping you have, and are willing to share numbers for 441X. Have a specific use for them if they are truly 80cc and want to know whether that is a myth? Thanks in advance Duntov

[F-BIRD'88]

The 370 castings were used on 1970 350 LT-1 (360 370hp rated) motors.
They are much like the 492 castings. Last of the 64cc high perf kidney bean chamber Z28 LT1 "camel backs" with accessory bolt holes.
They should have 2.02x 1.60 valves and screw in studs and guide plates.
If they re in good condition they are a good deal. A lot of water has gone under the bridge since 1970. A worn out, used up,abused, cracked head is not much use.
Check the condition closely. Will need some porting to achieve 400+hp.

[cool rockin daddy]

No kidney bean shaped chambers on those heads. Bathtub shape back then. Just to clarify. Kidney bean shape is the modern head's combustion chamber shape. I know F-bird knows that, he just mis-typed.

[lizardking7750]

He said the 370s have a 2.02 and 1.60 valves, .585 lift springs and he just magnafluxed them, which I will to. So I take it I should trade.

[a1supersport]

Is this an even-trade? No money? This guy you're trading with is a friend of yours? Just curious because, if the 370's are like the 492's, and someone wants to trade you for your 441's...even trade...and he's not a friend of yours...would make me suspect something's wrong with the heads.

P.S. I have yet to find "370" anywhere, in any book/website.

[F-BIRD'88]

Originally Posted by a1supersport

Is this an even-trade? No money? This guy you're trading with is a friend of yours? Just curious because, if the 370's are like the 492's, and someone wants to trade you for your 441's...even trade...and he's not a friend of yours...would make me suspect something's wrong with the heads.

P.S. I have yet to find "370" anywhere, in any book/website.

3973370....69-70...350..........over the counter, 64cc, straight or angle plug

[cool rockin daddy]

Yeah, I found the same description. Little bit harder with Mortec site being down or gone.

[lizardking7750]

He does dirt track if I remember correctly and these type 76cc decent flowing heads are apparently what the rules call for in Alabama, he also has a few sets of double humps laying around 461s, 462s, 370, and some others.