Old motor? I thought you just built that one, heard your car was going to be down for a while???

What happend?


Ragen, nothing in racing is cheap, there are guys that have there cars torn apart for YEARS only to run them and blow it up. Its racing. Keep pluging away and you can afford whatever you want, just depends on how long you want the car to be down for lol.

 

Oh I'd like to drive it today, but I am about 25k short lol.

 

Im that short or more lol

 

Mine has been a 2 year project ( have a post in this section called "A Few Progress Pics"). That 2 years is determined by my available budget and how big the "honey do" list is (it has to be taken care of or she make my life hell every time I'm out in the shop). I always pay with all cash. I would hate to have something tear up or blow up and I'm still paying for it on a credit card. Hang in there...It takes time.

 

They are a good head but for what you want street strip I would stay conventional.Check out Sonny leonards site hes done alot with them

 

I like them because you can get them out of the box and they flow 500+cfm untouched, plus they are under 5k with stainless valves and since I don't want to rev it I'll save an extra 1,000 by not going with titanium, and to get a 2" cnc port on intake and bowls and chamber clean up they are only like 400-500 more.

I want to keep my motor at a max 6,500 so I don't think I could build it that mild and still get 900+ hp from a standard head.

 

Your killing a BBC keeping it at 6,500, my 2 bolt main stock crank and rod motor did just fine at 7k.

Big flow numbers means more RPM.

 

I'm not killing anything, a 632 on pump gas with the heads I want to get will make 950 hp N/A only revving to 6,500, remember this is a street car. I don't want to run a 5k stall and big gears, I want to run this motor with a 3k stall and spray it when I want to have fun.

632 plus a 300 shot with a P/G will haul *** in a light car like mine.

 

.....................

 

................. LOL what!

 

.

Going to stick my 2 cents in, but it's your money, so I didn't. That is a lot of head on the street.

.

 

that head isn't ideal. Sure it flows alot but port velocity will suck and it will be zero fun in your "street car"

 

SO what do you think then dart 360?

 

360's on a 632" motor will be a little small, even fully ported which is probably a good thing since you want to have this thing live on the street. Why are you going so large if this is going ot be a street/strip car? Grab a 502 and stroke it like I did, there are plenty of heads out there by RHS, Brodix, Dart, etc. that can suit your needs a lot cheaper than going with a crazy angled head that would need custom parts all over the place.

 

What do you think about the Brodix BB 5- 390cc's on a 632?

 

Ragen, I think what people are trying to say is you can't get teh best of both worlds.

In my opinion you CAN NOT build a BIG BBC that does not rev high, no big stall or gears, pump gas, and fun to drive on the street with tons of power.

With this stuff you have either A a killer race car, B a killer car thats streetable (my Z), C a nice street car.

6XX motors and larger almost allways if not allways require heads that don't like the street if you ask me.

I have like a 3800 stall in my car (higher on the bottle) and it shifts at 7k with stock bottom end parts minus pistons.

Not sure why you want to rev it so low? Big engines hate that. Don't have to have a killer stall to rev it higher. 390's may work but like I said, big motor and big heads have to breath and they breath with increased RPM. On top of your way to big tire I really don't think the car will be any fun on the street. If not done right it will not be any fun period. Most cams also love higher compression (does not mean race gas but at least highest pump gas you can get) and stall and RPM. With all the restrictions you are puting on the motor I don't see 950HP on the motor honestly.

I have never seen anything over 572 in a street car thats driven as much as you want to drive it for reasons above.

I think most will agree that you should start from scratch on how you are thinking about this.

You could build a very streetable 540 with a lot of power and be very driveable, I don't see what you are wanting to do hapening.

Keep in mind I know of .750 lift 540's with 14.1 that are making 900hp on the motor... I don't see a little less then another 100 CUI allowing someone to make just as much power and more streetable and on pump gas. I also don't see a 632 with the matching heads liking the RPM you want out of it.

Just my .02, its your money.

I have said my peace.

 

I'm pretty much going to reiterate what was said above. You are building a 25.2 big tire car with a 600+ cubic inch motor and you want to drive it on the street and keep it at street level RPM's 2500-6500. My feelings are you will be very disappointed because this thing will be awful to drive on the street and you will put on a smoke show anytime you get on it. It will be a dog in the lower RPM's and blow the tires off on the street when you get in your powerband, which will only be for a couple thousand RPM before you shift @ 6500. It's easier to build a 540 for the street and then use nitrous at the track. That's what I'm planning on doing.

 

I am most likely building a 615 - 632, 10.5 or 11-1 so I can run pump gas, running possibly the BMF 385cc or 405cc head, with a sniper intake, single dominator, with a cam designed for spray that will peak around 6,500 rpm, with a 3,000-3,500 stall, not sure if I am going P/G or TH400 yet.

I'll will be running a 33x18.5 ET Street or Hooiser QTP Dot, keep in mind I'll have a tire 7" taller and 6" wider than most guys 26x10" tire which has WAY more traction potential cold or not.

I'm not build a high rpm race motor and keeping it under 6,500. I am building something that makes max power around 6,500 so I purposely don't have to run a high stall or a ton of gear.

I am not really concerned with all out street performance since I won't be street racing other than a little gas here and there at a stop light once in a while. I just want something I can put pump gas in and go have a fun drive, then take it to the track and put in some race gas and spray it to a decent number.

It makes what it makes, if it is less than my goal oh well, I just want to get it into the 8's on spray, that's the goal, if it makes it or not who knows but I think it will be very possible with that much chassis and that size motor and a moderate (300) shot at my race weight.

 

.

Decent enough plan. Better than the Big Chief idea, my 2 cents. I just hope you remember that big arm makes torque right now. I'm not a fan or expert on pump gas, 632's on the street. Too much, too easy to get yourself in trouble. I'm old & a father. Track cars are for trailers. Hot rods are for driving & racing. Hot rods not being 600"+ & 900 HP. 8 sec, 160 mph cars are a handful, stuff happens quick. Not even counting they have a problem with anything & you're sitting on the side of the road.

As I said, I like the new plan, just be ready for it. Good luck.

.

 

My last deal went 9.30's over 3,000 DA. This is a small set up, either way I don't race anymore on the street, I hit a truck @ 70 mph on a motorcycle, trust me it hurt and I count that as my last lucky break lol.

Now I can't ever say that if some import was next to me at a stop light I wouldn't let him see my tail lights for 200 feet lol.

Got to put those ricers in their place