Thread: Need your opinions

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I have a basically stock recently rebuilt 454 with the crappy 236 peanut port heads I was looking at the Edelbrock 60499 heads which should bring the compression up to 9.2 according to them. Then a Edelbrock rpm cam or similar and a single plane o port intake.

Cam specs are 560 intake, 573 exhaust, 112 lsa.

Do you think this is worth doing till I can afford to do the bottom end up with a forged rotating assembly?

Desktop Dyno is giving me 501hp and 479tq at 5500rpm. Would the stock bottom end be able to take this?

Originally posted by Blackroc
I have a basically stock recently rebuilt 454 with the crappy 236 peanut port heads I was looking at the Edelbrock 60499 heads which should bring the compression up to 9.2 according to them. Then a Edelbrock rpm cam or similar and a single plane o port intake.

Cam specs are 560 intake, 573 exhaust, 112 lsa.

Do you think this is worth doing till I can afford to do the bottom end up with a forged rotating assembly?

Desktop Dyno is giving me 501hp and 479tq at 5500rpm. Would the stock bottom end be able to take this?

I dont think you would see that hp number. And are you going to eventually spray this motor? Because if you are ganna go ALL motor then i would pitch that 112 and go for a 110 hyd. roller.
If you do go with those Edlebrock heads i would NOT run a single plane, i would run their performer dual planes...you pick the series.
And if you wanted to make some horse the stock way, you could always try and find a set of 781 castings.....or 049 BBC heads.

I had a stock 454...781 heads, pretty much the same cam you have, but i had tired springs. Edelbrock Performer 2.0 dual plane, Demon 750. Large long tubes, out to 3" into Flows. I was running 12.60's with horrid 60' and all my power was done at 5200 rpm.
I know it isnt fast, but as a street toy there wasnt to many people that could hang with it......that block is now a 496 that is deep in the 9's.......

Just shoot for building gobs of torque....the rest will follow after that.

Originally posted by 4speedTerror
I dont think you would see that hp number. And are you going to eventually spray this motor? Because if you are ganna go ALL motor then i would pitch that 112 and go for a 110 hyd. roller.
If you do go with those Edlebrock heads i would NOT run a single plane, i would run their performer dual planes...you pick the series.
And if you wanted to make some horse the stock way, you could always try and find a set of 781 castings.....or 049 BBC heads.

I had a stock 454...781 heads, pretty much the same cam you have, but i had tired springs. Edelbrock Performer 2.0 dual plane, Demon 750. Large long tubes, out to 3" into Flows. I was running 12.60's with horrid 60' and all my power was done at 5200 rpm.
I know it isnt fast, but as a street toy there wasnt to many people that could hang with it......that block is now a 496 that is deep in the 9's.......

Just shoot for building gobs of torque....the rest will follow after that.

I agree with most of this but N20 likes the wider lobe seperation.The trend now in N20 cams is 112 on up.

A stock cast bottom end will handle it just fine......the question is for how long????

the stock bottom ends hold up very good if you spend some time on oil clearances and hv oil pump and a good oil pan recon the rods with arp or srp bolts 6500 all day long.ok that is what i tell my customers they tell me over 6800 big block bottom ends come apart from poor prep or no oil stock stuff try to keep it below 6500 and it will live a very long time

Originally posted by 4speedTerror
I dont think you would see that hp number. And are you going to eventually spray this motor? Because if you are ganna go ALL motor then i would pitch that 112 and go for a 110 hyd. roller.
If you do go with those Edlebrock heads i would NOT run a single plane, i would run their performer dual planes...you pick the series.
And if you wanted to make some horse the stock way, you could always try and find a set of 781 castings.....or 049 BBC heads.

I had a stock 454...781 heads, pretty much the same cam you have, but i had tired springs. Edelbrock Performer 2.0 dual plane, Demon 750. Large long tubes, out to 3" into Flows. I was running 12.60's with horrid 60' and all my power was done at 5200 rpm.
I know it isnt fast, but as a street toy there wasnt to many people that could hang with it......that block is now a 496 that is deep in the 9's.......

Just shoot for building gobs of torque....the rest will follow after that.

The hp number was what desktop dyno gave me. Any ideas what you think it would make?

yes do it the way you were. some 781 or put big valves in you heads but they may run out of steam at hi rpm but i know they can be made to work the 112 is ok but you are not runing any cr so i think 112 would work good and with some big valves and a bowl job it would be one hell of a torque monster the single plane may work good with the small head like a torker II or x-celerator

Any of the 781 or 049 heads I see that are ready to bolt on are 1000 or more. Might as well save a little more and get the Edelbrock 60499 heads for 1700 or so. The smaller combustion chamber would bring up the cr and might as well save a little weight to.