Just tore apart this 454 I have had for 15 yrs . Was supposedly re done when I got the car. Its .030 over TRW L2465 forged pistons has 69 063 heads .Pulled the cam has numbers VA 5104 280 S and CO but cant read the 3rd character? Edelbrock Preformer 2 intake, No carb I havent messed with any big block builds since 73 any advice would be greatly appreciated for the build.Any ideas on carb and ignition? Maybe Duke has some thoughts?
454 engine build
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Re: 454 engine build
Just tore apart this 454 I have had for 15 yrs . Was supposedly re done when I got the car. Its .030 over TRW L2465 forged pistons has 69 063 heads .Pulled the cam has numbers VA 5104 280 S and CO but cant read the 3rd character? Edelbrock Preformer 2 intake, No carb I havent messed with any big block builds since 73 any advice would be greatly appreciated for the build.Any ideas on carb and ignition? Maybe Duke has some thoughts?
Tom------
A very lot depends upon what you intend to do with the engine and what you want out of it. For example, the Performer 2 intake manifold is not a bad manifold (assuming it's an oval port version to match your oval port heads) but it will not fit under a 68+ Corvette big block hood (except L-88 hood).In Appreciation of John Hinckley- Top
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Re: 454 engine build
Joe..... just want kind of a hot day 2 street car. Going to run this motor in my 69 Camaro. The last time I messed with big blocks was 70-72 back then it was a 396 with 840 heads and a ZL1 Cam and 10.5 to 1 pistons and an 850 Holley not sure what carb or cam to run in this motor for a street car.- Top
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Re: 454 engine build
I certainly wouldn't use a racing cam. Does it have a forged or cast crank? How about the rods? Bottom end strength and durability on a long stroke engine are going to be a big factor in determining "design speed" - the maximum allowable RPM.
As with any engine I always recommend massaging the heads, and then for a road engine selecting a cam that yields at least 80 percent peak torque at 2000 if a manual trans and 90 percent if an automatic.
I rarely establish a top end power objective unless it's a Bonneville car, where top end power is all that counts. On a road racing engine the usual objective is maximizing average power in the top 30 percent of the rev range and on a road engine maximize the average from 1500/2000 to design speed while making the torque bogey mentioned above.
Duke- Top
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Re: 454 engine build
Piston specs: Comp Ratio: 11.31:1 w/100.9cc Heads, 9.61:1 w/119cc Heads I believe with the heads you have, unless they have been decked, the compression ration of 9.0 (most likely closer to 9.0-1 would work fine. I am using the same pistons in a cast iron set of open chamber heads with good drive-ability.Dick Whittington- Top
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Re: 454 engine build
3.08 gear with that cam could be a little aggravating in traffic. 3.36 or 3.54 would be better. For simplicity I would go with a properly tweaked QuadrajetDick Whittington- Top
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Re: 454 engine build
Unless you want a 11.3 compression ratio, you can machine the piston domes down a bit and cut the combustion chambers to unshroud the valves to get a more reasonable compression ratio.- Top
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Re: 454 engine build
There are HUNDREDS of cams out there to choose from, and it's real easy to make a mistake especially if you don't have a good handle on desired broad range performance characteristics and just pick some peak HP number out of the air, which is what most guys seem to do.
A torquey 454 will work very well with a WR trans and 3.08 axle.
Duke- Top
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