HELP Identifying V8 engine

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#31

05-14-2018, 09:11 PM

sptrucksbyed

In the Staging Lanes

Join Date: Apr 2006

Posts: 41

I have 396 motors but still ended up using a 468 !!

#32

05-15-2018, 06:52 PM

Y2K

4th Gear Member

Join Date: Sep 2006

Location: Yacolt,WA

Posts: 1,868

Quote:

Originally Posted by Al Loyrat

The compression height was taller on the pistons when a 6.135 rod is used. Where the water pump attaches to the block, the top of the upper mounting ear of the water pump will be even with the deck on a 9.80 deck block; on a 10.20 deck the top of the water pump mounting ear is .400" below the deck of the block.

Yes but weren't those just in heavy trucks like dump trucks and 2 1/2 ton box trucks etc.? Aren't pickups and Suburbans the short deck like cars?

Quote:

Originally Posted by Gabet95

So I should be looking for a 454 from 74 or earlier, make sure it came out of a passenger car......that would be the ideal setup to start with.....right?

1970-1972 would be best before they went low compression and smogged out. Those of course would be harder to find. I'm pretty sure pickup trucks and Suburbans had the short deck 454 up through about 1990. After that they still had 454's but there were some changes like no place for a manual few pump to bolt on. If you go looking for a 454 probably 9 out of 10 you find will be mid to late '70's pickup/Suburban or motorhome engines.

#33

05-15-2018, 09:27 PM

Al Loyrat

1st Gear Member

Join Date: Feb 2018

Posts: 251

Verify the deck height before you buy it, and remember the gen IV & V big blocks are different than a Mark IV big block. What car do you want to put a big block in?

#34

05-15-2018, 09:29 PM

Al Loyrat

1st Gear Member

Join Date: Feb 2018

Posts: 251

Quote:

Originally Posted by sptrucksbyed

I have 396 motors but still ended up using a 468 !!

454 bored .060 over.

#35

05-16-2018, 07:15 AM

Gabet95

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Thread Starter

Join Date: Feb 2015

Posts: 32

Quote:

Originally Posted by Y2K

Yes but weren't those just in heavy trucks like dump trucks and 2 1/2 ton box trucks etc.? Aren't pickups and Suburbans the short deck like cars?

1970-1972 would be best before they went low compression and smogged out. Those of course would be harder to find. I'm pretty sure pickup trucks and Suburbans had the short deck 454 up through about 1990. After that they still had 454's but there were some changes like no place for a manual few pump to bolt on. If you go looking for a 454 probably 9 out of 10 you find will be mid to late '70's pickup/Suburban or motorhome engines.

Good info.....thanks

#36

05-16-2018, 07:20 AM

Gabet95

Newbie

Thread Starter

Join Date: Feb 2015

Posts: 32

Quote:

Originally Posted by Al Loyrat

Verify the deck height before you buy it, and remember the gen IV & V big blocks are different than a Mark IV big block. What car do you want to put a big block in?

I’m looking to swap out the 327 in my 1968 Camaro. I was hoping it would as simple as just swapping both engines and changing out the front heavier duty suspension spring to compensate for the heavier engine.

#37

05-16-2018, 08:29 PM

Y2K

4th Gear Member

Join Date: Sep 2006

Location: Yacolt,WA

Posts: 1,868

Quote:

Originally Posted by Gabet95

You will need to swap out the heater core, small block heaters end up with the hose connections to the core right behind the cylinder head with no room to hook it up to the hoses on a big block swap.