cam specs, what u think? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

ltd351 · 05-24-2005, 20:03

Custom cam for 351 clevor stroker

Heads are ported 2V with 4V valves

big turbo on LPG, powerglide, custom TCE conv, current diff is 3.0 will swap for 3.3'ish or higher if 3.0 is too tall.

.550 lift 114LSA

Duration in 284 adv 241 @ 50
ex 275 adv 232 @ 50

How do you think this cam will perform?

I have NO IDEA about cam specs so how big of a cam is this?

I wanted to use a 2800 stall but Lenny from TCE said that cam needs a 3500 stall and to flash to 4500 on the brake.

Any feedback much appreciated.

ltd351 · 05-24-2005, 20:40

Its just 351, NOT A STROKER, don't know why I wrote that, seems I can't edit the post.

not ford · 05-26-2005, 05:15

For streetability, combining a big turbo, 3.5 diff gears, and a cam of this size I don't think will work very well.

I would use a single pattern cam due to you using LPG AND the poor exhaust to intake flow ratio on std Ford heads.

I would go for something using your exhaust profile for both intake and exhaust. Keep the same LSA but install or have it ground on a 110 Intake Centerline. This I believe would produce a broader less peaky powerband which I believe would be better for the street (if thats your primary goal). It should also idle better.

If you want to use 3.0 gears I would knock off another 5-8 degrees off the cam.

Remember this is just my opinion.

azza · 05-26-2005, 05:58

I would think a cam close to stock was better suited to turbo engine's or a small duration higher lift, try a camshaft regrinder Dean Tighe or Waggot, if not use a f260 and let us know.
AZZA

ebxr8240 · 05-26-2005, 08:20

Turbo cams usually have less timing on exhaust..Due to manifold pressure against turbine...The opposite to blown engines...
Mine is approx 236 inlet 222 exhaust @50 set up at 110 centreline..approx 550 lift..114 lob centre...Idles choppy but power at very low rpm...On a 337 in motor...

LTD351V2 · 05-26-2005, 19:10

the one mentioned above is a camtech custom solid designed for maximum power output on LPG and high boost pressures, but to still be midly streetable. Guess i have to see how it goes.

TruBlu351 · 05-27-2005, 00:58

Quote:

Originally Posted by ltd351

Its just 351, NOT A STROKER, don't know why I wrote that, seems I can't edit the post.

There's a 30 minute window after submitting the post........after that its up forever.

ltd351 · 05-27-2005, 01:43

Quote:

Originally Posted by TruBlu351

There's a 30 minute window after submitting the post........after that its up forever.

ahhh OK then

ltd351 · 05-27-2005, 19:37

he he he, I plugged what i know into an engine analyser program and it does seem that the cam is fairly large with peak TQ @ 5250 and peak power @ 7000rpm.
It has an LPG fuel option and with 8.6 to 1 comp, 840cfm worth of gas mixers in blow thru, custom plenum with 1" tapered runners, boost limit of 26psi, basic iron heads, it makes 1365hp @ 7k rpm, and 1145 ftlb @5250. Alloy heads add a bit more power.

Switch to race gas(115oct) 1200cfm carb in blow thru, 32psi boost limit, it says 1604HP at 7K and 1314 TQ at 5750.

I doubt anything near these figures will ever be realised but it gives a good idea about the cam range, although some of the cam specs are unknown so its probably not very accurate.

ltd351 · 05-27-2005, 19:42

Quote:

Originally Posted by ebxr8240

Turbo cams usually have less timing on exhaust..Due to manifold pressure against turbine...The opposite to blown engines...
Mine is approx 236 inlet 222 exhaust @50 set up at 110 centreline..approx 550 lift..114 lob centre...Idles choppy but power at very low rpm...On a 337 in motor...

where do you see peak TQ and peak HP? I would guess well below 6K rpm's, with me having a few more cubes my cam should perform very similar to yours, hopefully peaks out below 6K.