Want More Info On My Engine, Need Help?

[GR8WHITE]

hey guys i just wanted to know a little more about the engine that i have in my boat, and i know it is a 69 427 the block # is 3963512. is there anywhere that i can pull numbers and codes off the the block and heads so i might be able to find out which 427 i have, as far as 2 bolt, 4 bolt, or what the horsepower should be, i was told it is the 425 horse model. thanks for all the help in advance guys. :D

[motormonkey]

Go to mortech.com and it may help you. As far as it being a 2 or 4 bolt you wont know unless you check. If you have a borescope drain the oil and look inside or pull the front timing cover.

[GR8WHITE]

Go to mortech.com and it may help you. As far as it being a 2 or 4 bolt you wont know unless you check. If you have a borescope drain the oil and look inside or pull the front timing cover.

cant find mortech.com

[motormonkey]

Google it, sometimes its mo tech or mor tech

[Norseman]

Try this

http://www.mortec.com/

[Moneypit]

There was a coded number on the deck in front of the r/s head. Originally, the letters following the serial number would ID the info you're looking for. However, the odds of the motor being in original configuration are slim to none and slim left town..........Those codes were useful in the early years while the original engine was in the vehicle, but today those codes are long since useless......So the only way to really know is take it apart and look it over, even then it is gonna be a best guess.........MP

[GR8WHITE]

Try this

http://www.mortec.com/

aha thanks, i wonder what a 69 427 chevy in running condition is worth now a days, does anyone have an idea? i saw one and it was a 427 with the same block casting as mine and it was rusted to high hell and you couldnt even turn the crank and it sold for 2500.00 on ebay. are they really worth that much now a days?

[RiverRacer]

aha thanks, i wonder what a 69 427 chevy in running condition is worth now a days, does anyone have an idea? i saw one and it was a 427 with the same block casting as mine and it was rusted to high hell and you couldnt even turn the crank and it sold for 2500.00 on ebay. are they really worth that much now a days?

If it's a full matching numbers deal it's worth tons, thanks to Barrett Jackson M***********S!...:mad:

[Moneypit]

If it's a full matching numbers deal it's worth tons, thanks to Barrett Jackson M***********S!...:mad:

As Art mentioned, "matching numbers" seal the deal in a lot of cases. However, those matching numbers are the vehicle VIN and a portion of the engine serial number. If those numbers match it is a certainty that it is the original engine , (or at least the original block) that came in the car is still in it. This little bit of history adds a great deal to the vehicle's worth. So, the rusty 427 that you saw was just an engine and the numbers were just numbers, matching nothing because the car wasn't in the picture......Now, it was the original stuff inside that created the value, not just the rusty block. I certainly wouldn't pay that kind of money for a pig in a poke, which is what it was without verifying that the steel cross drilled crank was in it instead of a cast 396 crank that a lot of them wound up with......MP

[RiverRacer]

Another tid bit here, if indeed it is a "genuine" 4 bolt block it will have the oil cooler access drilled and tapped by the filter!.

[V-Drive Video]

This is what my book shows.

http://www.v-drivevideo.net/pictures/albums/userpics/codes.jpg

[GR8WHITE]

Another tid bit here, if indeed it is a "genuine" 4 bolt block it will have the oil cooler access drilled and tapped by the filter!.

well by the oil filter there is a hole that is drilled and tapped, but there is a line for the oil pressure gauge hooked up to it. i am thinking of selling the engine and building a 454 that i have in the back yard.

[Norseman]

well by the oil filter there is a hole that is drilled and tapped, but there is a line for the oil pressure gauge hooked up to it. i am thinking of selling the engine and building a 454 that i have in the back yard.


If you can find someone that needs a block with that particular date code, usually someone doing a restoration, it would be worth quite a bit. If not it's just a core.

You need to find the right buyer.:):)

[RiverRacer]

well by the oil filter there is a hole that is drilled and tapped, but there is a line for the oil pressure gauge hooked up to it. i am thinking of selling the engine and building a 454 that i have in the back yard.

Well, it's probably a genuine 4 bolt then, a lot of people used that port for a gauge!.

[GR8WHITE]

Well, it's probably a genuine 4 bolt then, a lot of people used that port for a gauge!.

thanks art, thats why i love this site. arent the 4 bolt main 427's the 425 horse model?

[Moneypit]

thanks art, thats why i love this site. arent the 4 bolt main 427's the 425 horse model?

No, not necessarily......is it internally balanced?...........MP

[GR8WHITE]

No, not necessarily......is it internally balanced?...........MP

i believe so, the crank pulley is not weighted, but i havent looked at the flywheel yet.

[RiverRacer]

i believe so, the crank pulley is not weighted, but i havent looked at the flywheel yet.

If the damper has no counter weight then it's internally balanced!.

[RiverRacer]

thanks art, thats why i love this site. arent the 4 bolt main 427's the 425 horse model?

Yes and also the L88 which was rated at 430hp!..

[GR8WHITE]

Yes and also the L88 which was rated at 430hp!..

ha ha, wouldnt that be nice! :eek:

[RiverRacer]

ha ha, wouldnt that be nice! :eek:

L88's had aluminum heads!..:D

[shooter2]

I have an L-88. It is a .030 over, 4 bolt main, aluminum head motor, GM aluminum intake. Gordie, my old partner (shooter on here, hence me being shooter2) bought it new from GM and ran it for years. This motor is a very strong peice. We have passed it around as a spare for other racers to use when they have broke there motor. It is no 500 incher for power, but in the rough water up here it has won alot of heats because of its lack of power. And guess what, it is not for sale and won't be. I kick my a$$ for selling my Weber carbs to buy my injection. Not because I like them better, but because of what they are. I also had the 429 Ford Weber intake for meduim riser heads. Right in the middle of the alum manifold there was some weird hm cast into it, gee no idea what that meant.LOL. Sold that to some Cobra guy I think. Enough rambling.

Brian

[RiverRacer]

Back in the day the L88 was the legal SS motor, all you could do is change the cam and it still had to be a flat tappet, nothing else changed it had to be all factory parts and you couldn't even bore it to .030!.

[GR8WHITE]

hey art is this the hole you were talking about above the oil filter housing where i said that oil pressure line was.

[RiverRacer]

hey art is this the hole you were talking about above the oil filter housing where i said that oil pressure line was.

The one above the oil filter is on every block, the other one to the left is supposed to have a 3/4 pipe plug there, you have a 2 bolt block unless it's been converted to 4 bolt!. A lot of 427's came with 2 bolt mains, LS-1, L-36, L-68 all had 2 bolt mains and were all 400hp and less!..

[GR8WHITE]

well i pulled the valve cover and got a funky casting number from the head and it reads 6272292 and i looked it up and it shows they are heads from a 71 402 or 454 engine with oval port 2.06/1.72 valves with open chamber 110cc. have you guys heard of these heads before? :confused:

[RiverRacer]

Uhh ya, they're as common as can be from the 70's, standard passenger car head!..