429/460 owners sign in here - Page 5

ac andy · #1 (**permalink**) 06-27-2002, 06:33 AM

hi guys, just joined club cobra from melbourne, australia. Unfortunately not many guys over here are running big blocks as we are 'supposed' to use engines built after 1994, and all have to be fuel injected. My engine is being built as we speak, it is a 460 with tweaked edelbrock alloy heads, sequential injection(same as ozcobra is using, see his pictures), got no idea on horsepower figures yet but should make plenty of torque. Its backed up by a bullnose toploader and jag rearend with a 9" centre conversion. Look forward to hearing more big block chat soon!

dan adams · #2 (**permalink**) 07-30-2002, 06:17 PM

building a 460 out of a 73 town car. mains align honed. .010-.010
cy truck crank, stock rods (recond.) melling hi vol. oil pump, hayes
steel flywheel drilled for 11" centerforce. speed pro .030 os forged pistons with 19cc dish. block deck -.025, svo alum. cj heads (b429) 72cc chambers (30hrs.
of blending intake runners, reshaping and polishing exhaust ports
I can see my reflection in the exhaust runners.
everthing rotating has been balance. whoops not the cam.
svo cam -c460.595 & .610 lifts w/.244 &.254 dur@.050. svo roler
rockers. crane hyd. lifters. cloyes true roller chain. edelbrock mech
fuel pump. weiand stealth manifold. holley 750 hp. thats about it.
oh, I also have a wide ratio top loader 24". and 9" that needs to be narrowed. plan on ordering a shell valley within the next week,
can anyone tell me if it will fit under the hood without using the
large scoop. hope so. My first Cobra.

Venom S · #3 (**permalink**) 07-31-2002, 08:56 AM

I was planning on using the 460 SVO block with 4-bolt center mains. But will a standard 2-bolt block be just as robust for street use?

Venom_S

cobrashoch · #4 (**permalink**) 07-31-2002, 10:53 AM

Venum S - If it's on a carb and on the street the resounding answer is YES! In fact I would not even consider using a factory 4-bolt stock block even if I had one (I DO) because if I screw a engine up racing it, I don't want to chance destroying a expensive block. Use main studs and a steel main girdle such as a Blue Thunder and you will be in fine shape. The use of a main girdle will dictate the use of a custom oil pan though. Make sure that the pan is as short as possibe to fit that FF5. Another option is to use aftermarket 4-bolt caps on a stock block but that wiil require machining the block and line boring the mains. Dependant on the block and aftermarket main caps you use (this varies) a 4-bolt/from 2-bolt block done this way is usially stronger than a factory stock 4-bolt block! I know of a 2-bolt block with a main girdle that's in a blown alcohol dragster and this is the second season on this engine. My blown 544 produces numbers no where close to that engine either and I am not even thinking about the bottom end of my engine. As for the SVT block the only REAL advantage I see with those blocks are you can bore them out more and with taller deck heights this gives you better rod ratio's, though this to has room for dispute if it is even worth while. Also the SVT blocks are stronger on cam webbing to. What's a Iron SVT 460 iron block cost now? Last time I looked it was around 1700$ I seem to remember.
cobrashock

Venom S · #5 (**permalink**) 07-31-2002, 11:02 AM

Thanks Ron-

As for the 2-bolt to 4-bolt idea, Milodon makes 4-bolt main caps with angled bolts. This should make for a stronger block at a lower cost than the factory 4-bolt block.

Venom_S

cobrashoch · #6 (**permalink**) 07-31-2002, 11:22 AM

I would check with Milodon to see what block casting that those caps fit. If it is a DOVE 2 bolt block that is required you may have a tough time finding one and they can be a bit dicey on costs to. There is other caps out there that fit the garden varity DIVE, etc. blocks to. I think the Milodon caps are the cheapest ones out there though. BTW- That angled bolt cap is called a spayed cap. There is some out there that are conventional strait up and down. If you use conventional bolts on the mains a spayed cap is better. If you use studs there isn't any difference between the two.
cobrashock

bjrigg · #7 (**permalink**) 10-29-2002, 10:19 AM

I bought a West Coast Cobra with a 460 marine block on e-bay! It was in Spokane, WA and I'm in Eastern PA. I flew out and drove it back (2690 miles) in 5 days with NO problems. What a blast! Got it up to 140 and backed off; it was still climbing. I could write a book about the trip!

Jahred · #8 (**permalink**) 10-29-2002, 10:54 AM

I have been wondering what a de-stroked 460 would run like. I have a 514. Still breaking it in. Not ready for another project quite yet.........but...........I do have a spare 514 that needs a crank kit.............and hate to see it just sit there!

Miss the higher RPM's.....anybody have a feel for how complicated it would be to destroke it this time around to say a 427 and throw a supercharger on it? Any sites that provide information on dynamics of those types of changes or that would give insite in to what kind of RPM's a shorter stroke could run?

Tom Wells · #9 (**permalink**) 10-29-2002, 11:18 AM

Hi bjrigg,

Please do write a book!

Sounds like a trip I'd enjoy seeing all the details about.

Hey Jahred,

If you put a stock crank in it you can have a 429! Well, maybe have to add six for the .030 if you have that, too.

Tom

Jahred · #10 (**permalink**) 10-29-2002, 11:37 AM

Dan, I have a Shell Valley. Your 460 should fit if you don't get carried away with the manifold. I have a 514 Crate engine. I replaced the Victor with an A.T. Francis similar to the "performer".

I may have an oversized carb gasket, but thats about all. Even with the lower manifold, I had to use a "Drop Down" air cleaner set up to get sufficient clearance.

I did the Kevlar option and am very pleased with the solid body.

DAVID L. VALDEZ · #11 (**permalink**) 12-18-2002, 07:10 AM

Fellow members,
I purchased a Cobra with a 460 and in the total of 1500 miles on the car, I have had the pin on the distributor gear shear.

Any particulars. The rotor is relatively heavy and the only reason I could imagine the gear pin shearing would be if I missed a gear at high rpm and stalled the engine. The rev chip in the system is 6500. I drove it home, parked it and it would not start subsequently. It was somewhat cold that morning and I found the distributor hold down bracket loose. I think maybe the combination of cold morning big block startup (carburated) and the timing off simply would not allow it to start. I hope the pin is not broken again. I will only know when I pull the distributor.

Please forward all you recommendations

Sincerely

Tom Wells · #12 (**permalink**) 12-18-2002, 08:58 AM

Hi David,

Sounds like it's trying to tell you something

Pull it apart and let us know what it looks like.

You may want to go to The Butcher's web site or at least read my threads on my 460/distributor gear problems in this (460) conference.

It may be that the hole is drilled in the wrong place in the gear/distributor shaft to position the gear properly, or you may get bit for a cam, too if it has damaged the cam's gear

There are a number of reasons why this could happen, so read up on it and post what you find when you pull it apart.

Start a new thread for it so it'll be more obvious, and maybe others will chime in too.

Good luck with it,

Tom

edgoetz · #13 (**permalink**) 01-15-2003, 08:56 AM

am building a midstates car with a 521ci. svo short block ,trick flow heads,webers...and too much to list here! not running yet,but will be soon! pics at ....members.cac.net/radon/edscobra.htm

RoyBoy · #14 (**permalink**) 03-19-2003, 07:12 AM

Running 514 and pleased with power and response. Minor oil leaks on left rear valve cover. Usually three cranks to get her started.

mdross1 · #15 (**permalink**) 08-06-2011, 05:09 PM

Our CMC car was built 93/94,frame was set up for tubular uppers and lowers front and back with clearance for belly exhaust, 2600 lbs.
460 .030 over forged pistons
new beam rods arp 2000 bolts
balanced and blueprinted
Aluminum heads ported and polished
Lunati flat tappet .235 @.050, .560/.560
Edelbrock RPM
Dan Davinci 1000 cfm dbl pmp Holley
Mallory Unilite
aluminum water pump
Tubular Automotive custom racing headers
Stainless Specialties mufflers
Aluminum flywheel
Clutch pressure plate balanced with flywheel
Tremec TKO 5 speed
Strange aluminum center section 9" with 3:73 gear 31 spline moser axle,Traction-Loc
posi set up tight
Coilovers all around and car has been scaled
12" Wilwoods dual masters with balance beam
Have road raced the car and a little street/drag race when the need arises.
This car could be driven year round with top and windows in but do not.
Car just sitting still pushes the right buttons as you all know.The very first magazine article I read about the 427 Cobra back in the 60's have lusted over these beasts ever since.

RoyBoy · #16 (**permalink**) 03-21-2003, 09:01 PM

Runs very strong and a little hard to start. Some minor oil leaks.

DAVID L. VALDEZ · #17 (**permalink**) 03-24-2003, 08:16 AM

With a 460, and all the goodies under our hood, I haven't had the test...... fortitude to have the pedal to the floor in third gear, even at the heavy weight mark of 2657 lbs. This one squats and goes, no resistance. Can't imagine what 514 has to offer!!

wizard · #18 (**permalink**) 03-29-2003, 07:08 PM

West Coast with 460 BB. Edelbrock 750 with performer intake and cam.

JR Pennell · #19 (**permalink**) 03-29-2003, 07:51 PM

Running 460, .30 over, 280H Comp cam, roller rockers, alum. heads, Performer RPM intake, Holly 770 Avenger carb, hooked to a built C6 automatic & 9" rear w/350 gears.
It's a riot to have dogs run from me and to set off burglar alarms with with thump of the exhaust.

Ham Todd · #20 (**permalink**) 04-01-2003, 06:18 PM

I love my four-six-oh. Built to cruise all day long with lots of HP and grunt!!