HELP Identifying V8 engine
#21
05-13-2018, 05:05 PM
That's because the 396 hasn't been made for many years,454's were in a lot of trucks for many years after the last 396's were made and for years after the last big block cars with 454's which was mid 1970's. Pickups Suburbans and motorhomes had the old MK IV version up 'till about 1990 so there's still a lot of them out there.
#23
05-13-2018, 10:40 PM
. On the tall deck blocks intake manifolds are wider, distributors are taller, and exhaust needs to be modified. 454 passenger block (9.80) crate engines have been made and still offered.
Last edited by Al Loyrat; 05-13-2018 at 10:43 PM.
#24
05-13-2018, 10:47 PM
The tall deck (10.2") originated in the trucks. That's the distance from the crankshaft centerline to the deck surface (where the cylinder heads bolt on). The block is taller and wider than a passenger block. 1974 was the last year of a 454 passenger block used in production. I have a spare 1974 454 passenger block in my garage. Intake manifolds are wider, distributors are taller, and exhaust needs to be modified. 454 passenger block (9.80) crate engines have been made and still offered.
. Intake manifolds are wider, distributors are taller, and exhaust needs to be modified. 454 passenger block (9.80) crate engines have been made and still offered.
#25
05-13-2018, 10:54 PM
Well just like the 396 and 427 engines there was a variety of different versions and hp ratings in any given year.The high performance engines had better heads,usually 4 bolt main caps,forged steel crank and rods etc.etc. So an early one from a Corvette or SS Chevelle would be nice but good luck finding one. (LS6) A lot of 3/4 ton pickup trucks had the 4 bolt mains and steel cranks so they are a good start for a build.
#26
05-13-2018, 10:57 PM
The tall deck (10.2") originated in the trucks. That's the distance from the crankshaft centerline to the deck surface (where the cylinder heads bolt on). The block is taller and wider than a passenger block. 1974 was the last year of a 454 passenger block used in production. I have a spare 1974 454 passenger block in my garage. On the tall deck blocks intake manifolds are wider, distributors are taller, and exhaust needs to be modified. 454 passenger block (9.80) crate engines have been made and still offered.
. On the tall deck blocks intake manifolds are wider, distributors are taller, and exhaust needs to be modified. 454 passenger block (9.80) crate engines have been made and still offered.
#27
05-13-2018, 11:05 PM
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.
#29
05-14-2018, 08:11 PM
The tall deck (10.2") originated in the trucks. That's the distance from the crankshaft centerline to the deck surface (where the cylinder heads bolt on). The block is taller and wider than a passenger block. 1974 was the last year of a 454 passenger block used in production. I have a spare 1974 454 passenger block in my garage. On the tall deck blocks intake manifolds are wider, distributors are taller, and exhaust needs to be modified. 454 passenger block (9.80) crate engines have been made and still offered.
. On the tall deck blocks intake manifolds are wider, distributors are taller, and exhaust needs to be modified. 454 passenger block (9.80) crate engines have been made and still offered.