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Old 01-21-2007, 09:59 PM
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454 bbc

I was at a local body shop the other day and spotted a big block chevy engine,when I asked what they where doing with it they told me it was going to the scrap yard.So the next day I went to buy it and the son the owner didn't know what it was,and he sold it to me for a 100 dollars complete engine.I had already ran the eng. numbers on it so I gave it to him,It turned out to be a std. 454 4 bolt main with dimple rods,he said the guy ran it hot,and it did have a blow-ed headgasket,but its now at the machine shop,and the crank was new bearings rings all looked new,I'm having it bored,decked,cam bearings,freeze plugs pretty much everything.What I was wondering what would be a good combo that could get my 70 model camaro in the high 10s? I know I'm gonna run alum. heads ,and probably domes,but I still want it to run on pump gas(prem) any info would help on other engines you have built.This is my first bbc,and I want to make a killer engine out of it thanks for reading

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Old 01-21-2007, 11:04 PM
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Did you have it checked to sure that the block is not cracked? That is the first thing I would do before I spent money on it. Bud
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Old 01-21-2007, 11:24 PM
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Quote:
Originally Posted by 54truck
Did you have it checked to sure that the block is not cracked? That is the first thing I would do before I spent money on it. Bud
ye its done i'm going to get it in the morning
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Old 01-21-2007, 11:52 PM
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buy you some brodix bb2 xtra heads
run some dished pistons
put a cam with around 260 duration @.050 and .600-.750 lift
some good forged internals would be a good idea
also stroking it to a 496 would be a good idea also

you could also think about spraying it or using a 6-71 or 8-71 blower

run some 3.73 or 4.11 gears in it, and maybe a 4000 rpm stall converter

your car should be able to run in the 10s and be pump gas friendly with some of these combos
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Old 01-22-2007, 01:48 PM
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My current project is a 496 stroker motor:pics in photo gallery
Scat crank and rods
Brodix BB 2 Plus heads
Comp roller rockers
Doug Herbert solid roller cam (CBH7), lifters and pushrods
SRP small popup pistons which with these heads 10.3 to 1 CR
EdelBrock RPM airgap intake
850 Mighty Demon
MSD E-curve dist
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Old 01-22-2007, 02:16 PM
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There are a couple of things to consider. In order to get the motor to make the power you are after, you are probably looking at a max RPM of 6500-7000 RPM. That being the case, I would recommned getting an aftermarket rotating assembly. If you end up doing that, I would recommend building a 496. Once you get into aftermarket parts, it really does not cost much more to stroke it. If you are after something a little less expensive, I would look at using as much of your rotating assembly as you can and using a set of ported 049 or 781 heads. With a mid 240's at .050 ~.600 lift cam You could make around 550-600 hp @ 6000-6300 RPM with that setup. If you went with the 496, I would recommend the 315cc AFR heads and a solid roller cam in the mid 250's at .050 duration ~.650 lift. With that setup and 10.5:1 compression, I think you would be in the 700-750 range at ~6500-6700 RPM.

Here is a motor I just built and what power it should make:


496
9.5:1
248 254 @.050 ~.600 lift solid flat tappet cam
victor jr port matched to heads
fully ported oval 049 heads with 2.19 1.88 valves.
This motor should be around 600 hp/600 ft lbs pretty easily

This is a motor my friend built:

461
9.5:1
242 248 @ .050 .600 lift hyd roller cam
Victor Jr intake ported
cleaned up 781 oval heads 2.19 1.88 valves
This motor made 560 hp @6100 RPM/560 ft lbs with 20w50 oil on an engine dyno.

These show what the AFR 315cc heads are capeable of:

512 ci
~9:1 (would be a better match with 10.5:1)
254 260 @.050 .660 lift solid roller cam
victor jr intake
AFR 315cc heads

741 hp @ 6400 RPM 690 ft lbs @ 5100 RPM
http://airflowresearch.com/articles/article052/A-P4.htm

496 cid
10.4:1
255 265 @.050 .629 .629 lift hyd roller cam
holley single plane intake
AFR 315cc heads
Fuel injected

728 hp @ 6800 RPM 645 ft lbs @ 5400 RPM
http://airflowresearch.com/articles/article071/A-P1.htm

My motor is not in my car, so I dont know what it will do in the 1/4, but I have heard of combinations similar to mine in novas running really low 11's on drag radials and full exhaust

Adam

Last edited by firestone; 01-22-2007 at 02:44 PM.
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Old 01-22-2007, 06:34 PM
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don't intend to hijack the thread, but where do these blocks typically crack?
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Old 01-22-2007, 09:00 PM
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i Don know i have never seen one crack. Well I got the block,and new pistons they have a .230 dome its 30 over,I'm thinking of using a set of pro-comp alum. heads I am going to port match the intake to the heads,and a little port work on the heads I am using a victor junior intake,but I haven't decided on the cam. I got a crane hi-drallic roller off ebay with 632" of lift on the intake,and exhaust.I'm not sure if I'm going to use it though.Has anyone ever ran these pro comp heads I looked at the flow nubers and they look really good what do you guys think?

flow #'s
Lift Int Ex
.100 74.3 62.0
.200 166 118
.300 245 160
.400 308 195
.500 340 229
.600 360 248
.700 375 265
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Old 01-22-2007, 11:28 PM
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Remember, famed builder Steve Henderson said many times......

"You can build a 475 hp engine with a fuel problem, or a 450 hp engine that will run on junk."
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Old 01-23-2007, 01:08 PM
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I just have a couple of questions,

What size runner do those pro comp heads have?
what is the duration @.050 on that cam?
How much do the heads cost?

Adam
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Old 01-23-2007, 02:09 PM
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Quote:
Originally Posted by firestone
I just have a couple of questions,

What size runner do those pro comp heads have?
what is the duration @.050 on that cam?
How much do the heads cost?

Adam
the runners are 320cc the chambers are 115cc
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Old 01-24-2007, 08:47 AM
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I have never used those heads, but I have heard from one head guy that they were not worth buying. I dont know what is bad about them, but usually, you get what you pay for. Below is a link to a similar combo where they were brought up. I realize that this is just one guys opinion, but he does a lot of head work, and it is all I have really heard about them.

http://forums.racingjunk.com/viewtop...r=asc&start=15

Adam
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Old 01-25-2007, 09:19 AM
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If you look at Car Craft mag. of March of 2007 they have an article of a 496 on pump gas and also the dyno results and engine spec's.
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Old 01-25-2007, 10:29 AM
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There have been some more replys about the heads you are looking at on the link above if you wanted to see them.

Adam
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Old 01-26-2007, 05:16 AM
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Quote:
Originally Posted by firestone
There have been some more replys about the heads you are looking at on the link above if you wanted to see them.

Adam
Thanks i wonder how he knows about these heads I'm not going to run them this is why i love this site
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