Have the next motor narrowed down to either a 555 or 598. If I build the 598 it will have to be a tall deck. Anybody ran a tall deck in a C-3 ? I may do away with the power brakes, how about header fit (2 1/8 to 2 1/4) with raised exhaust ports and a 10.2 deck, anything I should be aware of ?

The 555 would be a little easier, blocks and cranks are a lot more abundant.

I have also been talking to Lenco, thier ST1200 street trans is good for 1200 hp and is 4800.00 complete with shifters. Check out thier website http://www.lencoracing.com and take a peak at the ST1200 if you are interested. I know it will require some work to get it to fit, but it will look really cool when done.

 

Must not be many tall decks in C-3's :yesnod:

 

any tall deck motor is going to use a lot of custom parts if you are going to do a tall deck dont stop at a 598 because if you are spending the money may as well go 632 instead that would be like stay in with the shorter deck motor and saying not build the 555 instead of the 509 it just doesnt make sence not to make it as large as ts possible thats all :cheers:

 

I am not trying to build the most powerful motor I can. This is a street / strip motor, so the cool factor has to be taken in to consideration. I like to be able to rev pretty high so the 4.5 " stroke of the 598 is as much as I want to be swinging. In reality either the 555 or the 598 will make the 12-1300 hp I want to make (850 + on the motor and the rest with nitrous) It may be helpful to kill a little of the torque off the line, which the 632 would make even more of a problem.

I am also going to try to budget a Hogans sheet metal intake. I certainly do not need it, but will look really cool sticking out of the hood. At the track it will probably cost me some consistancy, but I do not care. The day you catch me bracket racing you can have my car.

 

so then save a bunch of money and build a 468 then and rev it to the moon or build a 477 with a 4.500 bore and a 3.75 stroke and really rev it and save a bunch of loot too :cheers:


[Modified by CORKVETTE1, 6:36 PM 1/11/2004]

 

Both of those combinations have crossed my mind, just not as cool as a 12.5 to 1 598 with a big cam. If I had the cash a 3.5 x 4.5 twin turbo set up would be very high on my list.

 

John, absolutely nothing succeeds like excessive cubic inches :) That said, the "cool factor" is lost on ~ 99% of the people who will see your car - and even the remaining 1% would be suspect. You will easily make your power goals with the 555, and be money and fabrication time ahead. Just do a visual - imagine the headers up and out, that will be the main issue since you will have no hood clearance issues (no hood).

Be sure to have it pointed straight before you light the candle!

Thomas

 

The 555" deal is awful popular out there, with the huge bore and relatively short stroke. What kind of rpm are you planning for sure? I think you said you're looking at the 150 mph trap speed range so it's going to take some serious rpm unless you really count on the nitrous. The race guys I deal with are using a PG of course but they are all over 8800-9000 rpm range in the lights at 153mph or so. With nitrous and a stick that could come way down into the low-mid 7000's maybe? That's reliable with a 598 and even a 632, but as they said, with the bottle you can easily run 8's with less cubes. The 555 could easily do it i would think built with enough cam and compession. I still think a Big Chief/Big Duke package deal would look as cool or better than a Hogan and add more power!

That's an unreal trans! I think it's a little more packaging than I want to go through on my C-2, but is sure looks cool with the levers! The sad part is a G-Force costs more than it does...you wouldn't think so!

If you decide to do a tall deck, I'm sure we can come up with enough options to get it all to work. Or maybe use a tall deck anyway so you can use longer rods in the 555"?


JIM

 

Tom: Are you talking about zoomies :lol:

I know I can make a lot of power with a 555. If I do the 555 it will be a 13.5 to 1, .750 lift cam (1.8 rockers for the track, 1.6 for the street), fabbed intake and a pair of 850-1050's. With good heads this combo should sneak up on 850- 900 hp pretty good. That should be good for very high 130's or even in the 140's. Then we add the nitrous. I would like a 12-1300 hp dyno sheet, which should not be a problem.

I was thinking for the 555, 7300 or so would be as high as I would like to rev it, and 7000 for a 598. No need to wing it real high with a bunch of nitrous helping out.

Ya, that Lenco is a really cool tranny (I really dig the shifter handles), and while 4800.00 is not cheap, it is a grand cheaper than the G-Force and handles the same power. Maybe it is wishful thinking, but with the planetary gear set, it has to be stronger than the G-Force. You can bet I will put it to the test !!


[Modified by 69 N.O.X. RATT, 5:56 AM 1/12/2004]

 

I ran a tall deck in my '69 Corvette with absolutely no problems. I was even able to use the tall Moroso valve covers with the factory power brake booster.

My '67 with the 542 was a tall deck. I had to rework the Hooker 2-1/8" headers because of ground clearance but everything else fit.

Steve

 

What size and brand of headers did you use Steve ?

 

Both cars used Hooker 2-1/8".