460 Windsor or move to a big block

[750hp]

Originally Posted by Ace23

Is that a pretty conservative 557 and how high can you spin it

Just trying to understand your thought process. If it's a mild and relatively low-maintenance combination that makes more power and torque than you wanted, why does it matter how high you can spin it?

Do you want high rpm capability, bulk streetable low rpm torque, good gas mileage, lightest possible weight, maximum horsepower, no maintenance, or a budget crate engine? Brent can incorporate a number of these things, but not all of them...

[Gaz64]

Originally Posted by 750hp

Just trying to understand your thought process. If it's a mild and relatively low-maintenance combination that makes more power and torque than you wanted, why does it matter how high you can spin it?

Do you want high rpm capability, bulk streetable low rpm torque, good gas mileage, lightest possible weight, maximum horsepower, no maintenance, or a budget crate engine? Brent can incorporate a number of these things, but not all of them...

Agree.

700/557 = 1.25hp per cubic inch.

Sounds like a combo that would blow the tyres off, from anywhere in the rpm band.

Who cares about how high you can spin it?

Sure you could spend another 30k on it to spin to 9000 rpm and make 1000+hp but you won't get 150000 miles out of it.

It's all about compromise and making a suitable package for the intended usage.

[blykins]

It's hard to have your cake and eat it too. High rpms don't jive with streetability, ease of tuning, longevity, etc.

A big inch BBF would probably make that kind of horsepower on 87 octane at 6000 rpm.

[Ace23]

Originally Posted by 750hp

Just trying to understand your thought process. If it's a mild and relatively low-maintenance combination that makes more power and torque than you wanted, why does it matter how high you can spin it?

Do you want high rpm capability, bulk streetable low rpm torque, good gas mileage, lightest possible weight, maximum horsepower, no maintenance, or a budget crate engine? Brent can incorporate a number of these things, but not all of them...

It doesn't matter but I was just asking for that type of combo what the RPM range would be. When you go on 460ford and read all the build threads people are spinning those things from 5500-7000 and making all sorts of different power. I was just wondering with what Brent had mentioned where he was at with the RPM.

Originally Posted by Gaz64

Agree.

700/557 = 1.25hp per cubic inch.

Sounds like a combo that would blow the tyres off, from anywhere in the rpm band.

Who cares about how high you can spin it?

Sure you could spend another 30k on it to spin to 9000 rpm and make 1000+hp but you won't get 150000 miles out of it.

It's all about compromise and making a suitable package for the intended usage.

I was inquiring about the 557 he mentioned. I don't see the point in a wild big block in one of these cars. It seems like a mild big block would allow you to have more power than you could use and never leave you wanting more.

Originally Posted by blykins

It's hard to have your cake and eat it too. High rpms don't jive with streetability, ease of tuning, longevity, etc.

A big inch BBF would probably make that kind of horsepower on 87 octane at 6000 rpm.

I would be fine with 6000RPM.....I took an 80 mile spin last night and I may have hit 6000RPM+ a single time. 90% of the time I'm between 2000-4000K but I like the big power up top. I'm lucky to have access to 93 octane here but that is pretty encouraging to think you could make close to 700hp on 87. I'm assuming your torque would be close to 700 as well.

[Ace23]

Just got back in from a nice 80 mile or so cruise through some backroads and a bit of interstate. What a beautiful day no clouds and 65-70 degrees.....man these cars are so much fun!

What size exhaust should you be running on a stroked big block setup? I'm moving to 3" and I figured that would suffice in the future but I was just curious. I'm sure 3.5 is even better but that would be insanely loud.

[CraftEngines]

The Brodix T1 heads we do are a 225cc intake runner. They flow similar to the AFR 220 heads we use on our 460ci crate engines. These typically make about 625hp/600ft/lbs torque depending on camshaft. So far we have had good luck with the 4.250" stroke and have been building them well before FRPP started them. If you do not want that much stroke you could always go the 4.170" route and be around 450ci. The Big block engines are definitely more bang for the buck if starting from scratch. A rotating assembly and notching a block would be much cheaper since you already have the sbf parts. Also consider the loss of rear percentage and added torque, will be a little hard to get it to the ground down low.

[Ace23]

Originally Posted by CraftEngines

The Brodix T1 heads we do are a 225cc intake runner. They flow similar to the AFR 220 heads we use on our 460ci crate engines. These typically make about 625hp/600ft/lbs torque depending on camshaft. So far we have had good luck with the 4.250" stroke and have been building them well before FRPP started them. If you do not want that much stroke you could always go the 4.170" route and be around 450ci. The Big block engines are definitely more bang for the buck if starting from scratch. A rotating assembly and notching a block would be much cheaper since you already have the sbf parts. Also consider the loss of rear percentage and added torque, will be a little hard to get it to the ground down low.

Keith built the motor in my current car back in 2004. It was built for the original owner and is still running strong after some things were sorted on the car. I like the Rpms but the cam isn't so great on the street....it has good street manners but it's just pretty lazy below 4K. The cam is .576 lift with 252/262 duration with 112 LSA installed at zero degrees with dyno showing peak power of 592hp at 6900. You guys also helped the owner source the 2" primary size headers back in the day. I've been told the 2" headers are too big but I've also been told to keep them....what is your opinion? You guys also built my friends 445 Windsor using a very similar hydraulic cam but at 108 LSA and it's right at 600hp or a bit over....he is using 3:46 gears compared to my 3:31 but that thing flys. Thanks for the heads up on the Brodix heads.... My build receipt shows trax1 but I didn't know any additional info Congrats on the acquisition of the business.

[Gaz64]

If you have a 5 or 6 speed, I would look at a diff ratio change to 3.5, 3.7 or even 3.9s.

You may be surprised at how much more the car has everywhere.

[Ace23]

Originally Posted by Gaz64

If you have a 5 or 6 speed, I would look at a diff ratio change to 3.5, 3.7 or even 3.9s.

You may be surprised at how much more the car has everywhere.

Gaz, I have a TKO-600 with the .82 5th gear. I have considering going to a 3:73 rear or higher gear but I would want to have the .64 5th gear ratio so that I could maintain lower rpms when cruising at interstate speed. The plan is to go forward with the camshaft that Brent specified and then I will evaluate anything else that I need to do.....I do believe the gearing would make a difference and that's an inexpensive solution that many overlook.