why are the gains with hot rod cams so inconsistent?

[notastockdohc]

Think these cars are stock 300hp stock at the fly, if you make over 300hp at the wheel, then you are making good power at flywheel? I am installing frpp hotrods tomorrow I hope to god I gain something, I don't see how you can't gain anything, the intake and exhaust valves are staying open longer and the are opening more? Even with no tune I don't see how you cant pick up 5 hp?? I figure with a good tuner such as bbr, you should pick up decent hp. I am only running a Mac axle back jlt2 cai, the frpp hot rods, and the 93 oct custom tune, I hope I pick up something. I would hope if I put it on a dyno it would be in the 310-320rwhp area??

 

[Marc s]

Like others have noted, the HP potential resides in the hands of the tuner.

 

[Greg Hazlett]

I picked up 30 hp/3 tq with the HR cams and Kooks LT's with a catted H pipe; this was also on an automatic with 410 gears.

I assume your question was for NA cars because as mentioned before the HR cams are not optimal for FI.

 

[808muscle]

I picked up 3 mph at the track but lost torque with my detroit rockers. Cams need longtubes to reach their potential IMO.

 

[UltraKla$$ic]

I picked up a smile that is permanent. Even a plastic surgeon can't remove it from my face.

 

[JEWC_Motorsports]

Im expecting over 360 @ the wheels after my hotrod/header/frpp intake install.

 

[Greg Hazlett]

I hope you are not setting yourself up for a disappointment; Luke (LAllison20) had the BBR stg 1 cams, BBK LT's and the FRPP intake and picked up 5 hp....on the dyno with a dyno tune.

 

[JEWC_Motorsports]

If i only pick up 5 hp ill set the car on fire. lol. I seriously doubt that will happen.

 

[Greg Hazlett]

Well....not being an ass, just passing on what I saw.....

Do you already have CMDP's? Luke did, that may contributed to the low gains.

What gears do you have and are you an auto/manual? He had 410's which also lead to lower dyno numbers.

 

[JEWC_Motorsports]

4.10's and i do have cmdp's. I made 306/313 on a mustang dyno with 4.10's, cmdps, jlt 110mm cai, udp, or-h, and a 87 octane torq tune. Who knows?

 

[Lupo222]

I made 341whp with UD pulleys, Hot Rods, LT headers, and a Bama Tune. Would have liked to see #'s with a BBR tune before I got the supercharger though...

 

[Vapour Trails]

One needs to compare different cars on the same dyno!

 

[Greg Hazlett]

If you are going with that theory shouldn't be same day, same mods and same tuner?

 

[notastockdohc]

Yes eliminate variables. Same car, same dyno same tuner. Put hot rods in, run the numbers, then mother thumpers, then Detroit rockers. See what happens.

 

[Greg Hazlett]

Wow...while in theory that makes sense and I agree but that would cost a lot of money for 3 cam swaps, 3 tunes and 3 dyno sessions....maybe one day MM&FF or 5.0 will do a cam shootout.

 

[notastockdohc]

Wow...while in theory that makes sense and I agree but that would cost a lot of money for 3 cam swaps, 3 tunes and 3 dyno sessions....maybe one day MM&FF or 5.0 will do a cam shootout.

True, if someone would fund it, they could use my car as the mule lol. I do think these s197 computer/ecu are very complicated and only a good tuner can truely unlock it's secrets.

 

[Greg Hazlett]

LOL..if you think these are tough wait until you get a 5.0 with all the variable cam timing!

 

[notastockdohc]

True, just want to see a 3v cam shoot out. The 5.0 has alot of deserved hype, but these little 4.6 3v are still good.I like my 3v just fine.

 

[Lupo222]

if anyone wants to do this (MM&FF, 5.0), I'll be deployed soon and you can use my car You can see how it works with teh supercharger too

 

[Greg Hazlett]

None of those 3 would do well with a s/c.....and I would think if they were to do a shootout a NA car would be what they would want.