steer me in the right direction (engines)

10secgoal · Nov 4, 2010

Here,....mabye. But over at TTF for sure. My new heap. Another ugly coupe Haven't touched it since about Jan. Too busy and I bought that Shelby. Between those car payments and proto typing it, there is a lot of time and money going into that turd lol I may use the rear for the 67 for it. Guys breaking 9in with 1000hp and 4000lbs car at the launch

Hack · Nov 4, 2010

To the original poster - if you want to run a supercharger, remember that you have to make a bunch of extra power to turn the supercharger. So take that into account when you're deciding whether to use a stock block. The crank also takes a heavy load from the pulley running the blower. I've always heard around 500 hp as the magic number for the stock block, but essentially more power = shorter life. You can make it live at 500 hp, just not nearly as long as it will live at 400 or lower. If your net out put is 400 hp, you might be making 500 hp and using that extra 100 hp to turn the blower.

Another option (not cheap, but cool IMO) would be to run an aftermarket block with big cubes at the 8.2" deck height. NA you could make lots of power and have really good longevity. Bigger bores unshroud the valves for better flow, so a big bore aftermarket block can make a lot of power. If you went with an aluminum block it would be really light in the car, too.

10secgoal · Nov 4, 2010

374 iirc on the cid. Bored and stroked 302, made 470+ rwhp on pump. Nasty little car.

blown65 · Nov 4, 2010

10secgoal said:
374 iirc on the cid. Bored and stroked 302, made 470+ rwhp on pump. Nasty little car.

We didn't max out our 67 Shelby motor, but it came out to 370cuin with the dart block.

DukeGnarley · Nov 4, 2010

I think much more than 400 rwhp might be overkill for the cars intended purpose. (of course I say that now lol). If i wanted more cubes I'd probably go with the cheaper stock block 408.

Hack · Nov 4, 2010

DukeGnarley said:
I think much more than 400 rwhp might be overkill for the cars intended purpose. (of course I say that now lol). If i wanted more cubes I'd probably go with the cheaper stock block 408.

Just giving you options. The smaller aftermarket block fits the car easier and you can tell people it's a 302! If you're considering a blower, the entire package cost might be similar with a blown small block (taking a chance that the block won't crack and destroy your expensive parts) versus an aftermarket NA big cube mild build that could last a long time. Also if you buy an aftermarket block you will have room to grow if you decide you want more later.

Also remember that more cubes = more streetable power. Yes you can make 400 rwhp with 302 cubes, but it will be less streetable than 400 rwhp with 370+ cubes.

Decurion · Nov 7, 2010

I forgot to mention the guy in question is using a 68 Mexican block, not just a regular block, so it should handle 1300 horse no problem...

Anyway, the block prep I was referring to is 2 thick braces welded across the lifter valley, which from my understanding is where stock blocks are most likely to crack under high horsepower. The point I was trying to make is that 500 hp in a car that sees more street time than track time should have no problem with 500hp, especially if youre willing to do a little work. More horsepower and/or more track time and you may be looking for a new block whether you want to or not.

brianj5600 · Nov 7, 2010

Cracks start at the tops of the mains. A Boss 302 is the only production block that has a snowballs chance at 1300hp.

Decurion · Nov 7, 2010

Sorry, forgot to turn on the sarcastic font.

blown65 · Nov 7, 2010

lol, crank will still be walking its own journey after a hit or two at 1300hp. LOL

steer me in the right direction (engines)

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