Big block questions.....

[70rs/ss]

The prefix portion of the ID code tells you the assembly plant code, and the engine's production date (for example, 0701 = July 1st....no year is indicated).

T 02090

Looks like the first T = Tonawanda and the rest 02090 is the date 02/09/70 would be my guess, but it is a 72 model so not sure. The block should have a date code cast into it as well. But by the three letter code it is a 402 from a truck.

The suffix portion tells you the original model year / engine / transmission / car combination when it went down the assembly line (for example, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400).

THB 1972 Truck 402 210 400 L-47 30, fwd




As for the holley cast intake, I'd love to see the intake, I was not aware Holley made a cast iron intake, but they could have. As for value? Is it a running driving motor? If it is and everything is A-OK somewhere between $300-800 (remember gas is $/gal) and a 396/402 isn't as popular as the 454's. Just my opinion. If it was a 396 out of a Chevelle or camaro and had the 3 let code to verify, it might be worth more?

[Hart_Rod]

Originally Posted by 70rs/ss

The prefix portion of the ID code tells you the assembly plant code, and the engine's production date (for example, 0701 = July 1st....no year is indicated).

T 02090

Looks like the first T = Tonawanda and the rest 02090 is the date 02/09/70 would be my guess, but it is a 72 model so not sure. The block should have a date code cast into it as well. But by the three letter code it is a 402 from a truck.

The suffix portion tells you the original model year / engine / transmission / car combination when it went down the assembly line (for example, CTY = 1970 396 Camaro, 375 hp, 11.0:1, TH400).

THB 1972 Truck 402 210 400 L-47 30, fwd




As for the holley cast intake, I'd love to see the intake, I was not aware Holley made a cast iron intake, but they could have. As for value? Is it a running driving motor? If it is and everything is A-OK somewhere between $300-800 (remember gas is $/gal) and a 396/402 isn't as popular as the 454's. Just my opinion. If it was a 396 out of a Chevelle or camaro and had the 3 let code to verify, it might be worth more?

The numbers on the block are confusing and inconsistent. It definitely is a cast iron holley intake. I found some info that mentioned that it was on a 427. I'll pull the casting numbers later. Thanks for the info.

[sameyrasmea72]

The intake looks like mine. It is a GM (Holley) cast Iron.

[70rs/ss]

Originally Posted by Hart_Rod

The numbers on the block are confusing and inconsistent. It definitely is a cast iron holley intake. I found some info that mentioned that it was on a 427. I'll pull the casting numbers later. Thanks for the info.

The casting numbers from the back of the block were used and reused (so several motors could have the same casting number), but, the stamped numbers are for that block and only that block (more reliable than the casting number, IMO). As far as the date code in the T02090 series, I am not positive about the number being the date or if it is part of the VIN as the quote I attached says it is a date, but 02/09/ 0? if it is 70, and it could be. Then the motor was cast in 72 but then stamped in 70 (not likely) I think the numbers are part of the date and the extra 0 is nothing maybe, or it is the VIN, what are the last few numbers of the VIN?? As for the intake, it could be a GM/Holley collaboration for a Perf BBC. I have seen High rise BBC cast manifolds on Chevelle motors and such, just didn't know holley helped?? A casting number off the intake will help to ID what it came on if a GM number, may be worth some coin if it off of a muscle type high HP 427 like a vette?

[67_C-30]

Originally Posted by 70rs/ss

As for the intake, it could be a GM/Holley collaboration for a Perf BBC. I have seen High rise BBC cast manifolds on Chevelle motors and such, just didn't know holley helped?? A casting number off the intake will help to ID what it came on if a GM number, may be worth some coin if it off of a muscle type high HP 427 like a vette?

They worth a little money, but nothing like rectangular port high HP intakes. The cast iron intakes were made for mid-level performance, usually topping out around 350HP.

[Hart_Rod]

Originally Posted by sameyrasmea72

The intake looks like mine. It is a GM (Holley) cast Iron.

That looks like it.

Originally Posted by 67_C-30

They worth a little money, but nothing like rectangular port high HP intakes. The cast iron intakes were made for mid-level performance, usually topping out around 350HP.

How much is it worth??

[67_C-30]

Originally Posted by Hart_Rod

How much is it worth??

Theu used to sell for a couple hundred all day long, but the market is off right now, so its hard to say.

[Hart_Rod]

Originally Posted by 67_C-30

Theu used to sell for a couple hundred all day long, but the market is off right now, so its hard to say.

Thanks. This site breaks the TBH down....

Code Year Model CID HP Trans Comment
TBH 1970 Truck 402 310 L-47 10, 20, 30


http://www.nastyz28.com/gm-chevy-cod...-suffix-15.php