Originally Posted by malachi
-edelbrock aluminum performer rpm heads
2.05/1.60, 60cc CC, 190cc int. runner, < .600 valve lift
-should end up w/ about 10:1 comp w/ 16cc dished pistons
-4 spd wide ratio top loader
-3.89 traction locker
-edelbrock air gap (if it will fit under hood)or performer intake
-650-750 cfm carb
-headers & 2 1/2" exhaust
-1.7 roller rockers
-cam? looking @ pbm w/ 224/234 @ .05, .536/.562 v lift, 112 on lobe sep or-
erson w/ 228/228 @ .05, .545/.545 v lift, & 108 on lobe sep.-
A guy from crane recommended 228/232 @ .05, .597/.609 v lift & 112 lobe sep.?
Not a bad set of choices overall. Definitely avoid the Performer intake for this kind of engine. It will run out of lungs at about 5000 RPM with a 393" stroker. What you'll want is a Weiand Xcelerator 2V. This intake will really work well for what you're trying to accomplish.
The camshaft you're considering is a bit whimpy for what you've got in inches. I'd recommend pushing it a bit to something like the F-238 Crane cams mechanical flat tappet camshaft. I'd probably recommend a nice solid mechanical lifter camshaft for you that is along the same lines as the F-238 considering that you're running a 393" engine.
You should make well into 520+ HP and 480+ TQ with such a combination. You can probably get by using a set of 3.23-3.55:1 gears and a reasonably tall tire, since the added torque of the stroker will definitely overpower the tires even on the strip without slicks. Your choice of car is heavy in the nose and light in the tail, so traction will be an issue unless you plan to use something like Caltracs.
I wouldn't use a 650. I would use a minimum of a 750 with my preference being an 800 CFM Holley DP. Of course, this is assuming that you go to the track with it and don't want to swap carbs. Use a 750VS around town and swap to an 800-850 DP when you get to the track. That way you can jet the DP way up and keep the VS for maximum fuel efficiency on the street. You're going to have to run premo fuel no matter what carb you're using, so you may want to do what you can to avoid the high fuel prices. If you really don't care about it, then you should be building a solid roller engine with a set of AFD 4V heads and mixing 50% avgas and running 11.5:1 and making upwards of 600+ HP.
The Weiand Xcelerator is a very good choice for this beast. It is a smallish plenum inlet designed for a 351C with 2V heads. You're basically adding 92 cubes (26% more capacity!) and a dual plane is really not something that I'd recommend for that much engine. It is going to NEED to breathe.
I would probably more vigorously push for the AFD 4V heads if you had any intention of driving the car at the track on a more regular basis. Also, if you really didn't expect to drive on the street very much, I'd say go for more power. If you're going to be running the A/C and full power accessories, then the Edelbrocks are an acceptable choice, though I'd strongly encourage you to review the choices from CHI and AFD. They are worlds above and beyond the Edelbrock part.
With regard to your cam choices, definitely go a bit on the "big" (compared to a 351" engine) side as the extra inches will tame it down a LOT. You can probably run about 238* with a 110* LSA at .560-.580" lift without compromising reasonable streetability given a small plenum inlet and reasonable (1-3/4" max) primaries on your extractors. Ideally, I'd try to get about the following specs out of my camshaft choice:
238* intake duration @ .050" lift
240* exhaust duration @ .050" lift
.565" minimum lift
.586" maximum lift (flat tappet solid camshaft)
.604-.610" maximum lift (solid roller)
Unless you are really planning to run a LOT of street miles on the engine/car, I would strongly encourage you to consider a mechanical camshaft and not a hydraulic camshaft. The Cleveland is really a great mechanical cam engine, even with mostly factory ports/valve sizes in 2V or 302C heads. If you are running (not that you are) a 4V, there is nearly no excuse (except for maximum streetability) for running a hydro camshaft, IMO.
If you want to be on the very conservative side, I'd recommend the following:
Weiand Xcellerator 2V inlet
Edelbrock (if you decide against AFD 2V or CHI 3V heads) heads
234*/238* @ 0.050" hydraulic flat tappet camshaft 110* LSA .565" lift
BEST quality valve springs, stainless retainers, good Ferrea 5000 valves
Holley 650 DP
MSD ignition w/6AL with 6400 RPM rev limiter
Ceramic coated Hooker Super Comps
3.23:1 rear gear with a 26" tire
3.55:1 rear gear with a 28" tire
3.89:1 rear gear with a 30"+ tire
You should make well into the 500+ HP range and idle with a strong sense of performance but no distraction from streetability.