[Rosco80]

I picked up a 454 for my car and it's a 361959 so 73 to 85 454 car or truck.

The problem is the suffix code is stamped T61520198. Can't seam to find any information about this engine.

it's not the usual suffix numbers to find out the rest of the info about it. Does anyone know what this code means??

 

[77sonic]

Any letters/numbers just below the thermostat bypass hose, just above the timing chain cover?

 

[Bronze68]

Look for the little milled pad on the block above the timing cover. Here's an example:

 

[kermitsass]

Not much help, but the hydraboost lines eliminate a car from the original application

 

[cherokeepeople]

same with the p.s. reservoir,thats a truck unit like 1 ton truck ,does it have dual thermostats?

 

[Rosco80]

I will go out to the garage and check. Thanks.

 

[Rosco80]

Ok after cleaning off the pad this is what's there

Thanks again

 

[shovelrick]

Might be a 4 bolt main engine, my 75 "959" is, look for large threaded hole for external oil cooler line

 

[Bronze68]

According to the Lime book: 1975/76/77 454 from a truck, manual transmission, 4 barrel; built January 20. Check for a casting date code on the bell housing flange to zero in on the year. Report the block number as well. Block is likely a 4-bolt main.

 

[Rosco80]

I got pictures of the numbers on the bell housing flange

This is pretty corroded but I think it reads K6 T or Y 5

 

[Bronze68]

Hard to tell the date code from your picture - maybe a little too close of a shot. I simply get K6()5 out of that, possibly indicating November 6, 1975. Maybe that blob is a 7, I've seen some pretty messed up foundry numbers before. If that is the date, it lines up with your TSD engine code.

Picture of the holes on the side/area above the oil filter pad will tell the story on two or four-bolt caps. Likely 4 given it was in a truck application.

 

[David Bates]

According to the Lime book: 1975/76/77 454 from a truck, manual transmission, 4 barrel; built January 20. Check for a casting date code on the bell housing flange to zero in on the year. Report the block number as well. Block is likely a 4-bolt main.

If luck is on your side it may be but I've had several 1975 361959 blocks that were all 2-bolts. All were removed from GMC K30 based ambulances fwiw.

 

[Rosco80]

I got a better picture of the casting date and it looks like it's 75.

Thanks for all the help everyone.
I guess I will know if its a 4 bolt when I take the oil pan off. Guy I bought it from said it was a 2 bolt but he never had it apart.
Either way I got my Big Block so I'm happy.
One other question will a small block starter work on a big block? Flywheel is the same diameter.
Thanks again.

 

[zookpr]

That engine was for the '76 model year. Also, I have never seen a 454 4-bolt main come out of any truck or suburban in any chassis rating 1/2, 3/4, or 1 ton.

 

[David Bates]

Thanks for all the help everyone.
I guess I will know if its a 4 bolt when I take the oil pan off. Guy I bought it from said it was a 2 bolt but he never had it apart.
Either way I got my Big Block so I'm happy.
One other question will a small block starter work on a big block? Flywheel is the same diameter.
Thanks again.

Indeed it will. Good luck with your project!

 

[mr 4 speed]

Great engine to start with. Even a mild cam,headers and intake make a HUGE difference in the HP/TQ departments.

 

[Rosco80]

Mr 4 speed, I plan on doing just that. What would you suggest on the cam and intake.