JUICED98Z

iTrader: (16)

This is a basic build as you will see below.

454 bored .060 over (468). It has stock "thumb rods" with arp bolts and trw l2465 forged pistons. Camshaft is an isky hyd roller. Lift is 578/608 duration is 238/248@50 and 284/294 advertised. As of right now I have a performer rpm airgap, but that may change if needed. What head and intake would you guys recommend? Right now I have a set of 781 oval ports but they will need everything as they have been sitting for quite some time. My thought is if it will cost me $500-$1000 to re do the stock heads along with some port work why not spend $1000-$2,000 on an aftermarket set if the performance gains would be worth it. I am open to changing the cam and intake if it makes sense. I am really interested in what you guys have to say. This will be in a 3,000lb body with a th400 trans along with a 3500 stall, ford 9 inch rear with 3:73 gears and 28 inch tall tires. I am looking to get all the performance I can out of the combination. The plan is to take the car weekly to the track and drive the car about 2 days per week on the street. I may ad a 150hp shot of nitrous once I get everything dialed in. Thanks in advance for all the advise.

niceguyyy01

iTrader: (13)

You didn't say what compression you have, but I am going to assume it's around 10:1. If so, I'd put some as cast AFR 305's and a Dart single plane withan 800cfm Holley. That combo should make an easy 500-550 on pump gas. I just finished building pump gas 540's for my offshore boat and they made 725hp with a hyd roller.

JUICED98Z

iTrader: (16)

Compression will be 10:1 with a 119cc and the proper gasket thickness. I was considering the AFR oval port or the Brodix Race Rite. I thought the square port might take away from low end torque, however that is why I am asking. I only want to spend the money one time.

87gnx

iTrader: (3)

I also like the AFR (320) set up.Might be a good match for your build.I wouldn't put any less than a 750cfm carb.

-Not to hijack,Niceguyy01, whats some of the specs for that 540?? I puked my jet boat motor, looking for something like what you described for my winter project. Thanks

niceguyyy01

iTrader: (13)

Juiced, the head decision is going to be based on usage. I figured it a street-strip car and only occasional street driving. The AFR ovals would be a stump puller for sure!!! Max hp will be made with a bigger head, but not too big, that is why I said the 305's.

87gnx.... it is 10.5:1 comp Gen VI, eagle rotating, custom made Hyd roller, cnc'd AFR 315's, Merlin X manifold, Prosytems Dom. Could have made a little more peak power with the 335's, but in my heavy offshore boat, I didn't want to sacrifice the torque.

ZONES89RS

iTrader: (25)

That is the problem i am having, i have 2 sets of 781s and my compression will be 9.7 with them, they need to have the valves swapped for pieces that van take abuse and i need speings and spring cups, but i found a set of 820 that are about the same but have a 113 cc chamber so i am going to pick them up and use them. I am going to polish them myself.

Now, i will be using a bigger cam than you and i am still going to use the ovals since it will be going to 6500 RPM or so on the street.

If i was going higher, i would go a different route with rectangles.

Know that the sponsor Patriot heads sells a set of BBC aluminum heads that made over 700 HP for about 1600$, so there is no need for the more expensive heads, especially if this is not a all out race motor.


Hope this helps you a bit.

ZONES89RS

iTrader: (25)

Here you go if you want the aluminum.

https://www.patriot-performance.com/...&cat=33&page=1

JUICED98Z

iTrader: (16)

Niceguyy you must be a mind reader,I am looking for the best performance on the track, street duty will be 1-2 days per week. I was considering a solid roller at first but it seems like they are a little too hard on the valvetrain in my opinion. The goal is to get somewhere around the 5-550hp range more would be better. I would like to keep the compression where I can run on 93 octane,

ulakovic22

iTrader: (12)

If track is the concern then go with the AFR's. A really nice head from what I have seen. Of course you can stick with a cheaper head like Edelbrock Oval's and get them worked over to meet your needs. I plan on using the Edelbrocks the next time around.

93Z2871805

iTrader: (5)

RHS makes some really good heads, as well as professional products. As for an intake team-g or the professional products hurricane is a hard to beat one. Car Craft said the hurricane is dollar for dollar one of the best intakes for both BBC and SBC.

ulakovic22

iTrader: (12)

RHS does make a really good head, I have the 320cc version and flow numbers from them on Lloyd Elliots bench. Search for my BBC build in Drag Racing to get the flow numbers. I'm not sure how you feel about 320cc on a 468 though.

niceguyyy01

iTrader: (13)

hahahaha, nah all gearheads think alike!!

If your goal is only 550hp then there is no need for a solid roller, a well designed hydraulic roller will easily make the power you want without the valvetrain maintenance. Like I said before, I would definitely go with an Aluminum head....so you can keep compression up higher. But hell you already know the benefits, so I'll just stop there.

Let me just say this: I had a 502 with 8.75 comp and a weenie hyd roller (224/228 with .550 lift on a 114) and it made 500hp with GM rect port heads and a Dart intake and 800cfm carb.

So now if you built a 468, 10.5comp with some 305's and a decent hyd roller, good single plane and a Holley 850, I think 550-600 is easily achievable on pump gas.

The only thing on heads is you get what you pay for.... I'm not going to debate different manufacturers of cylinder heads. Ask some of the more successful machine shops which heads they'd use and I think they will side with me.

JUICED98Z

iTrader: (16)

What kind of cam would you suggest if the one I have is too small? I don't mind going with a solid roller but I would like something to last more than a year. What kind of specs should I be looking for in a cam, ie duration, lift etc... Street duty will be no more than 2-3 days per week and mileage will be less than 20 miles per trip on most occasions. I am ok with bringing the compression ratio to 10.5:1 if need be. in the beginning I was looking at comps solid roller lifters and a lunati 660ish solid roller. Believe the rpm range was 2800-7000. I would like to keep rpms in the 6-6300 range if possible. Hydraulic roller is definately an option as I would consider a solid flat tap as well. Thanks everyone for all the help and advise.

niceguyyy01

iTrader: (13)

I would have the cam custom ground, if it were me. Usually only costs an extra 30 bucks or so, but you get a cam specifically for your combination. The cam guy won't spec the cam until you have a final compression ratio nailed down, cause that is one of the important variables.

I am no cam guru, I get all mine made specifically for my particular projects.... but I will say somewhere in the 250-260 @0.050 duration, around .650-ish range for hyd. roller. But keep in mind, the more radical the cam, you better have some damn good lifters (I use Morel Hi-RPM severe duty) but I have almost .700 lift hyd roller. This way the lifter can withstand the higher spring pressures.

Solid rollers make undisputed power.... but come with maintenance. Not just setting valves either, they can be spring killers as well. On my race car, I had Jesels and the cam only had .720 lift and everytime I checked the lash, it was perfect.... but I think the Jesels played a huge part. In my old street car (when I was a kid), I had a solid flat tappet with only .600 lift, and I'll be damned if I didn't have to set them bastards once a week. LOL. But I also didn't have Jesels either.

My advice: Decide the heads, compression ratio, intake, carb, rear-gears, stall converter and get the vehicle weight and THEN call Bullet Cams and have them make a recommendation. I've heard good things about Ed Curtis too.

slammed68

iTrader: (1)

definately look into the new afr ovals....they are priced well and from what i have seen actualy outflow the 305's at lower lift numbers.

01FireTurd

iTrader: (2)

screw afr's check out pro comps damn good head and good price look at the dealers who sell them on ebay bare 595$ !! iv seen a pump 489 with these epoxyed rect in to oval and made 720 with a tame cam and low low budget shorblock

JUICED96Z

iTrader: (2)

I had the same pistons with stock rods and rod bolts, stock crank and had a larger cam, like a 278/620 cam, 10.5 compression with a set of aluminum GMPP C port heads, no porting at all besides port match on the intake. Holley Strip Dominater intake (port patched) that I still have and is for sale. BG 850 carb that flowed 1,050 and it took a 300 shot no problem and ran like a 10.4@136 on a 150 shot spining hard on like 7 cylinders and a stall that had issue. That was at like 3,500 pounds.

The heads and intake were rectangular port and I shifted it at 7k... stall was a 4k, 4.10 gears.

JUICED98Z

iTrader: (16)

Well it looks like the plans changed somewhat. I ended up getting what I feel was a good deal on a set of ported 049 heads with manley raceflow valves 2.19 1.88. The cam was replaced with a lunati solid roller cam and lifters part #60233 that is a 660/680 lift. I should have it running in the next week or two. Not sure if I will reach my goals or not but I can always upgrade the heads somewhere down the road.I appreciate all the replies so far. Anyone have a similar combo?

cambirdracing

iTrader: (4)

have set of these on my wife's 489. bolt on and love them. Plus you get a free set of vaalve covers.

http://www.jegs.com/i/Brodix/158/202...oductId=750164

USA1CAMARO1969

iTrader: (1)

Same heads(pocket ported and gasket matched), same pistons, edelbrock perf rpm intake, cam and an old offy 2X4 low-rise. It makes respectable torque and I am pleased with it but the heads are going to edelbrocks(not because they flow much better but to shed the 100 pounds of nose weight) and it's getting a Herbert hydraulic roller this winter.
Car has the TKO 600 and 12-bolt with 3.42 gears. It's my stress-reliever.