KahunaJohn

I'm trying to find out more information about an engine I bought?
I'm not having much luck.... Block code: F1SEBB

Thanks, KJ!
txoldrodder@att.net

KahunaJohn

Block Code Pictures!

dawson1112

1991 thunder chicken, engine division. BB is just a date code I believe.

dawson1112

Should also note that just because it is stamped 91 thunderbird , does not necessarily mean it was used in a thunderbird. Ford used that block in several cars, and if there were F1SE blocks left on the line when they switched over to a different model or model year they used the remaining F1SE blocks first.

It is a very common 302 roller block.

KahunaJohn

So it's a 1991 roller block? Is it an HO? and will a tremec t45 5 speed work with it? KJ

dawson1112

T45 will not fit behind it a T5 will

As far as weather its an HO block or not depends on what cam you throw in it. Or what cam it has in it now.

mjr46

doesn't mean it's a 91......that's just the start of the new casting code.....e7 casting code went until then so in theroy it could of been for example if it carried a e7 code from 87-90 or 91 until all those casting codes were used up

KahunaJohn

So how can I find out the right year for the engine and if it's a roller, HO, Etc? KJ

mjr46

know what it came out of....but that really doesn't matter unless it's a numbers maTching build??