Originally Posted by nourse
I want to build a really strong street/strip motor. It mostly a street car that I drive 10 to 15 times a year (65 Galaxie). The 429 that was in it was a great engine until I ruined it. I'm running a wieand 2x4 tunnel ram and I don't know what cam I had in it, the motor was in the car when I bought it 3 years ago. I want to do this 514 right with a roller cam, lifters. Do you have to prep the block special for a roller cam and lifters? The heads that I have are the c9ve-a that were ported with stainless steel valves. These head were on my 429 are the worth keeping or would aluminum heads better out of the box? I would like to run on pump gas but I want 500hp so If I have jump to 100 or 110 For as much as I drive her for the hp I would do it.
The block does not necessarily need
to be prepared to accomodate aftermarket roller lifters. That being said, note that a properly planned pump gas 514 stroker combo that generates 500 hp can be done in your sleep and with a hydraulic lifter camshaft, and most certainly with a tunnel ram.
If you are on a budget, then well ported C9VE iron heads and a hydraulic cam can meet your needs. If you want to spend some money and spring for a roller cam valve train upgrade--which by itself is an instant $1000 more than the hydraulic lifter valve train
--you can do this, but my personal opinion is it would not be money wisely spent for getting the most bang-for-buck 500 hp pump gas stroker. You could certainly get more than 500 hp, but regardless of power output also remember that maintenance goes up and reliability drops.
Lastly, if you have a standard bore block, then go just 0.030" over and build the 501. There is little hp gained from the 514 overbore (0.080") since these engines have big bores to begin with, and the majority of power comes from stroking them....so save your block for future overbores.
Starting with a pump gas friendly, iron headed, hydraulic lifter valve train engine, generally:
- Std bore block, cleaned and magged, square decked to 10.295" deck height, block oiling mods as outlined on the High Flow Dynamics Technical Pages
- SCAT 501 stroker kit with cast 4.14" crankshaft, 6.700" forged rods, and 1.52" Diamond forged -32cc dished pistons (compression ratio will be about 9.6:1 and pump gas friendly)
- New oil pump std volume or high volume (I would opt for the HV pump, but that's just me)
- Brand name double-roller timing chain
- CompCams camshaft grind # 296AH-8 and accompanying valve springs, 10* retainers and locks
- Stainless steel valves in those C9VE heads
- Recurved Ford Dura-Spark distributor, or aftermarket
- (2) Holley 750 carbs on that tunnel ram
- tubular headers
Well built and in good tune, the above should manage 500hp, and then some. Probably the important thing here is that the C9VE heads are well ported. 91 octane premium pump gas would likely be necesary in that big car of yours.
Hope this helps,