HP chart questions

I'm building my 1st stroker since I did a 388 with my son for his high school Senior project 18 years ago.

I came across this forum, and really like the information you guys share here.

I recently purchased a 1971 Mach 1 and want to make a 429 clone to show all the BB Chevy Chevelle guys around here what the blue oval can do.

I plan using my stock 1974 block, some tfs street heads, but I want to stroke it to 557 and then pretty much follow this recipe I found in the proven builds forum:

475-500HP 460ci

Intake System:

750cfm Holley DP Carb professionally calibrated for your application
Edelbrock Performer Rpm Intake Manifold

Cylinder Heads:

D0VE heads with larger valves, port job, chambers polished and port match
(330-ish/190-ish cfm flow @.600)
Intake valve size increased to 2.19
Exhaust valve size increased to 1.76
Roller rockers.

Short Block:

Comp Cam XE274H Hydraulic flat tappet cam or equivalent
(Specs:274/286 adv., 230/236@.050, .562/.565, 110 LSA)
Compression at 9.8:1
Stock crank
Eagle I-beam rods
High volume oil pump
Deepened oil pan with windage tray

Exhaust:

1 7/8" headers to dual 3" pipes with H-pipe. Good flowing 3" Magnaflow mufflers or equivalent.

Summary:

91 octane. Keep redline to 6500 rpm.

Any thoughts would be greatly appreciated.

I'm also thinking 850 or maybe 950 carb.

Aiming for a quick "Saturday Night" car.

But pump gas and street legal, though mostly a trailer baby

first of all welcome! if you are going to do a 557 with TFS heads the 500 hp mark will be no problem on 6 cylinders lol!!! really tho I would bore the engine .030 for street driving (temp reasons) and it will make 545 ci and with 9.5 compression a hyd FT cam and a 850-950HP carb it will make more like 600 ish and it will be very driveable, just my 2 cents

If I wanted to keep

it stock looking I would find a Holley 855cfm Vacuum Secondary Carburetor and put high flow shaved throttle shafts, blades and screws to pick up the cfm. I might cut the choke tower down also but, I would try it with the tower first and see how it does. I would not screw around with a 750 on a 557 at all. The next step would be a 4150 worked over Double Pumper but, You can do a lot with a downleg booster vacuum secondary. I would also not rule out 950 and 1050 3 barrels either. A lot of tricks can be done to them and they are the ultimate 4150 in my opinion so far until you step up to a Dominator.

http://www.ebay.com/itm/Quick-Fuel-1050-CFM-bbl-Carburetor-/291771542673?hash=item43eef06c91:g:EtoAAOSwMHdXQyqP&vxp=mtr

Pretty Snazzy for a 4150 But I bet it would do the Trick.

Thanks butterbean, I know alot of the guys here are into huge hp numbers.

While I'm not against that in any way, I'm concerned about twisting up an American classic muscle car. I don't want to cage it through the firewall. And only plan on mini-tubbing it in the back, running DOT drag tires. Hopefully they'll give me some measure of launching traction.

supervel45, thankyou also.

I'm not too concerned with stock looks, since it will have TFS heads and a mafia intake.

I like the carb you linked through Ebay.

I think that would be perfect for me.

By the way, I currently have a C6, and 3.55 Detroit locker, nodular center, big bearings, 31 spline axles.

Will these hold up?

I also need recommendations on torque converter, mfg & stall speed.

Convertor -  Contact Lenny at Ultimate Convertor Concept. Great guy to deal with and is a sponsor oft this site.

http://www.ultimateconverter.com/

Thanks Jon Myrick, I'll do that!

Vermaverick wrote:Thanks butterbean, I know alot of the guys here are into huge hp numbers.

While I'm not against that in any way, I'm concerned about twisting up an American classic muscle car. I don't want to cage it through the firewall. And only plan on mini-tubbing it in the back, running DOT drag tires. Hopefully they'll give me some measure of launching traction.

supervel45, thankyou also.

I'm not too concerned with stock looks, since it will have TFS heads and a mafia intake.

I like the carb you linked through Ebay.

I think that would be perfect for me.

By the way, I currently have a C6, and 3.55 Detroit locker, nodular center, big bearings, 31 spline axles.

Will these hold up?

I also need recommendations on torque converter, mfg & stall speed.

I think your Big Bearing Nodular 31 Spline will hold up and I have tortured Detroit Lockers since the 80's in trucks Drag and Offroad and have yet to be able to break one, everything around them broke off first LoL. That QFT 1050 is Nice. Ask Him What his reserve is and Buy it if it is reasonable, Looks like about a 500 dollar deal to me but the Snazzy Carbs are always pricey and it may be more. I would think a bigger Carburetor would be in order on a Hot 557 but, you are not going for Max numbers so that one would be a nice Compromise I Think. Welcome Aboard and Your Welcome.

PS: I think your Cam is a little small but, it should pur like a kitten with that many cubes and the semi
wide LSA. I would keep the stall tight at around 2,400 to 2,800 myself and remember it a BBF stroker not a 460 so they will have to build it a little tighter to get that stall out of the big high torque deal you have. It should pull like a Freight Train with your Combo in my opinion.

http://www.ebay.com/itm/Quick-Fuel-Q-Series-4-Barrel-Carburetors-Q-1050-/181761349721?hash=item2a51d21859:g:fwUAAOSwI-BWLS2Q&vxp=mtr

WoW
I guess I need to raise my prices. 5 Bills would be a bargain it looks like.

supervel45,

I'm picking out my cam, looking to get a little more cam than I originally thought.

Any recommendations for a streetable hydraulic roller?

Also aiming for 10.0 to 10.2 compression, since I should be able to still run that on 91 octane, right?

Vermaverick wrote:supervel45,

I'm picking out my cam, looking to get a little more cam than I originally thought.

Any recommendations for a streetable hydraulic roller?

Also aiming for 10.0 to 10.2 compression, since I should be able to still run that on 91 octane, right?

Sorry the Owner does not want me recommending any cams or other advice. Many other's will help you in this area though, it's kind of a touchy subject though and has been for a while. I usually stay away from it.

Thanks supervel45, I can respect that.

I'm pretty sure that I'd be wasting money if I didn't go with more cam with the TFS street heads, and with 545 inches of displacement to fill Im pretty sure that Comp Cams mechanical roller, Extreme Energy p.n. 34-770-9 cam will be the one I choose.

It's 274 / 280 236 / 242 @ .05" lift

.650" lift int and .657 lift exh.

110 deg lobe seperation.

Does this sound like a streetable situation?

I've never dealt with big blocks, and I know that large displacement tends to really mellow a cam. Those numbers in any of the small blocks I've done would seem quite radical to me.

Having a hard time transitioning my brain to an engine this big.

Thanks, Doug

Call one of the cam gurus here Lem or Randy and there are more also. They can set you straight if you're willing to listen.

I don't know them, nor how to just call them

Here are a few, screen names first then contact info. Call them or shoot them a PM

Lem Evans, B F Evans Race Parts
270-278-2376

rmcomprandy,Randy Malik,
www.rmcompetition.com

The finest in custom engine building for all venues ...!
Selling those Parts & Supplies from companies I use ... 1 (586)909-1591 ... fax 1 (586)771-2930

Straubtech
Straub Technologies
www.straubtechnologies.com (423) 391-7774

Thanks Mike, was just copying pasting the numbers.

Thanks guys!

Thanks guys!