Quote:
Originally Posted by RICK LAKE
David S David there are alot of buildup of 429-460 motors in car mags like Hot-Rod, Car Craft, 4 wheeler, Master engine builder, and Ford legendary. Form what you are saying, a low rpm torque motor would be about right. Where the heads and the intake manifold ported? You can advance or retard the camshaft to move the power ranges around also. I would also ask you about the oiling system of the motor and oil pan. If the roads are short and alot of turns, the oiling of the motor is most important. 7-8 quart system, Large oil filter with high flow. HP1 comes to mind. If running an oil cooler in the front of the car #12 cooler lines with high flow connectors.
Are you looking for a nasty exhaust sound? Run a camshaft with an LSA of 110 or less. Your exhaust will be the BIG power killer of your car unless they are race pipes with no to little backpressure of the motor.
If you can find the SCJ 429 specs I think you will be happy with them. Side notes, I help with a SCJ car that had a 460 block and bottom end and a 429 heads and intake The max safe rpms where 6,500. We had rod problems over this. This was a stock bottom end with only ARP bolts and nuts. There is alot of weight flying around in the bottom end. Also watch the dampener, we had one come apart from racing. With a little head work and cleaning of ports we made over 420 HP and 480ft of torque. All the power is in the heads and intake. Ran a 780 Holley with dual feed and only single pump. The double pump had 50CC pump and the car bogged everytime they opened. We changed cam profiles, went to 30CC pumps and found that the single worked the best. There are some oiling modes you should look for. Some guys run a extra supply line in the lifter valley to the back of the motor for better oiling of rods #7 & #8. We broke #7 and it went through the side of the 429 CJ block and the crack, was not repairable. It did make a big splash off the bridge and scared the fisherman.    I would tell you to go with the smalled camshaft, limit the rpm range, extend the life of the motor for many years and have limited maintaintance. 5,500 rpm chip in the MSD. This motor will smoke the rear tires off the car with little problem. Watch out if you are running rubber hoses in the car and have methonal in the gas. We have 15% and it is eating the rubber out of the cars here. Rick L. Ps you guys still repair some of the best piston motors in the world like Packards and Merlins, Now their is a noise I could live with.   Pss don't mind Max, he's off his meds again |
Rick
Many thanks for the very useful info. I have read a few articles in a few mags which I pick up over here, thus my indecision of the choice between the two; again my question to you experienced lads over there which you prefer.
Ok, should also add, the Cobra runs 2” primaries running to open side pipes approx 4” dia, very similar to the ones sold by Finishline. I have had a good look inside them with an endoscope and there isn’t a lot of baffling, just perimeter perforated tube internally
Oil pump is a high volume type, runs approx 70psi when cold and 50 to 60 when hot. At LeMans classic last year we were stuck in traffic and the air temp was 95 to 105 F ( we work in 0c so I hope the calc to 0f is correct, the road surface was melting)
Rad is purpose made for the application by a great company called RadTech and the car has never overheated yet in 4 years.
Rods, crank etc were all supplied by PAW and pistons fitted and the assbly balanced at the time. I did do a check and all tolerances were very good. Chrome molly plasma rings
All bolts, nuts etc throughout are ARP
Push rods are 3/8”
Heads to inlet were blue printed and a little smoothing carried out.
The block valley oil ways were cleaned up to aid oil drop back to the sump.
16 row oil cooler is run. Standard size sump but it is very deep.
Oil filter is a Coopers, not sure if a high flow or not.
I run a 4 degree crank gear straight.
Holly is out of the box although I have fitted a secondary block and have been playing with jets and secondary springs, not bad now.
Rick, that has given me another bit to consider, thanks to all. If you like Merlin’s and you mean the type that were wedged in a Supermarine Spitfire air frame then you would love the Goodwood Revival I attend, classic car racing era 1933 to 1966 and WW11 air displays with low flying Spitfires, Mustangs, Lancaster Bombers etc, have a look at the web site, an unbelievable event, and the majority of people dress in period costume. I do all 3 days and I would sell the wife so not to miss this.
http://www.goodwood.co.uk/revival/ph...e-revival.aspx
By the way I understand what you mean about Max, we have Care in the Community schemes running as well