454 longblock I just picked up looking for advice.

turbobuick

Veteran Member
Nov 24, 2018
206
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I just picked up a 454 for my 73 camaro. It has 049 heads. Cast crank and rods. .030 over hypereutectic flat top pistons. Looks like compression ratio will be 8:1. It was rebuilt 25 years ago and never installed. It sat wrapped in 3 garbage bags in a climate controlled garage. Pulled bags off looks like new, besides the assembly lube partially dried up around heads.
Here’s my plan:
Install aggressive cam, replace hydraulic lifters and pushrods. Spray cylinders with mystery oil and spin bY hand, then run it.
Just curious what you guys would do and if you think 8:1 454 will be fun setup. It will have a T-56 behind it.
 

Chevyforever

Veteran Member
Jan 4, 2011
1,405
Ontario, Canada
Nice acquisition, you've got a good decent Rat to work with. Short duration @ .050 cam, decent intake depending on what hood you have, headers and you will have lots of power for everyday cruiser on pump gas. Big block torque is hard to beat. I would use steel shim head gaskets if heads and block are thought to be "straight."
 

turbobuick

Veteran Member
Nov 24, 2018
206
Performer rpm is what I was thinking. I have an Edelbrock 750 carb I am planning to use.
Do you guys think this valve relief looks to be 1.6 cc? There is a HT-16 stamped on piston and I’m assuming that’s what the 16 means 1.6 for calculating compression ratio.
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Chevyforever

Veteran Member
Jan 4, 2011
1,405
Ontario, Canada
The late great John Lingenfelter achieved some tremendous numbers from an engine similar to yours using an old Comp Cams Magnum "288" solid roller and a modified Holley Strip Dominator intake. (that build was about 30 yrs ago LMAO). Plan on valve springs, retainers etc if you go to a roller cam. The hyd. springs likely are not adequate.
Are there any other makings on pistons ? If we can determine mfr you will know exactly what you are working with. Also use care when picking lift of cam as valve to piston clearance with a stock type repl. piston is also a concern.
 

turbobuick

Veteran Member
Nov 24, 2018
206
Speed pro .030 “HT-16” is stamped on top. Some markings on bottom, I have to get under there and check them out.
 




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