I know the SR works great with the 219, and that is what I want, but I was wondering about a hot cam or something that was made after the lpe how would that work in comparison? Is the lpe 219 still the best cam for the SR? thanks

 

When I was running a 383 I had a Crane 222/230 which was good for low 11's. Now with a 406 I run a Crane 230/240 which is good for mid 10's. Not sure this helps since you have a 350. The Superram can be made to breathe at higher rpms (6500) by extrude honing the runners and manifold and still have a great flat torque curve.

 

that is nuts, thanks for the info

 

It depends on the rest of your setup. Cam should tie all the pieces together.

I notice the SR cam is a single pattern (219), high-lift cam. You might need more split -- depending on your exhaust/heads. With sims, though, I'm also seeing how lots of exhaust duration can bleed of compression -- and hurt your numbers.

The hotcam has less lift and (much) more exhaust duration, it could help (vs the SR cam) if your heads don't flow that well and your exhaust is restricted. Do you have stock heads and manifolds?

 

how about a 383 with super ram , afr 195's at 11 to 1 compression?
and smog considerations?

 

I will be probably buying heads, unless I can get mine worked cheap. I will have long tubes and I have dual ss straights. My sr is ported and polished.

 

I thought you already bought a cam... How did you arrive at the specs for that one?

 

ron spec'd it out, cam for tpi, going with sr, so if you have a suggestion great...just looking at optimization and options, doesn't mean it's done

 

I'd look at 219 as a minimum driver, but more likely something like 224/230 duration. 219 will definitely pass the sniffer, going much bigger puts you in a red zone unless you want to change the tune every time it gets smogged.

 

NICE!!!

It's going to be hard to beat the SR cam then -- but it's possible. Your new exhaust will eliminate the need for much (if any) split. You could pick between 1.5 and 1.6 rockers on the SR cam -- depending on the heads (flow) you get.

(Or, if the heads don't flow dog-nuts, you could pick smaller ramps and stick with the 1.6 rockers. TPiS recommends using rocker ratio and smaller lobe wherever possible to get desired lift.)

The hotcam might not lift enough and the split will hurt you (for your future setup).

It might be beneficial to ask (compcams or the forum) how the XFI lobes compare to the SR lobes.... Since the XFI lobes are newer, they MIGHT be easier on the valve trane than SR cam. I say this now that I notice the similarity in the SR vs XFI (duration/lift).

From compcams catalog... A single pattern XFI cam could be ordered with 218/218 .570"/570" 113+/-LSA. The SR cam is 219/219 .560"/.560" 112LSA. (With 195 heads, the XFI might actually get you a few ponies more.)

(Another option would be a 214/218XFI combo. It would get you more bottom end -- if you want it. Or Lloyd Elliot sells a bullet cam 218/222 with .544/.544 lift (w 1.6). It's a bit easier on valve trane -- with slightly smaller ramps.)

That's the options I know of anyway...

 

I just remembered, the cam you'd picked before was for a TPI. The SR will definitely be different!

Vader's suggestion sounds about right. Reducing lift or duration typically improves emissions.

Isn't there a lot of tuners in LA?

Edit: O.K., Slick.... How come you're looking for a MR in C4 Parts ForSale, but say you want a SR here?

 

Gregg that really breaks it down a lot I have 3.75 gears so I don't know how much torque I can have in a 36, but I would think that on a street car, it is very hard to get traction, with any torque or gears, it came with 2.59's and since I have been doing things I can't exactly get traction with these gross gears (partly tires) , but I want a strong pull all the way through

 

i was going to the miniram, then jorge at express auto ( one of my new pals) said go for the super ram, as per his suggestions before i even met ron, anyhow, i found one from al, and i just paid a big down for it (long story), jorge has experience with this item and can navigate the herendous task of install and leak prone parts.

the mr idea is scratched and the eo number with the sr is a nice icing on the corvette cake.

i call ligenfelter and the 74219 they recommended is rated at a 1.6 rocker ratio, the cam i have in it is bigger, albeit with a 114 lsA VS. THE 219'S 112LSA,

do you know if i should look at that number closely or it's advance whatever that means, heck i wish this was all done by now.

 

Slick thats a good cam leave it in there, it was ground for YOUR car (theres no PN on it) with CI, heads, comp, etc. It wont care which intake is on it.
You should just put that thing together before swapping things out but a heavily ported SR wont hurt anything for sure .

Tell Jorge to start wrenching and stop thinking. thats already been done .

 

whats a pn? jorge says the edelbrock 7801 timing set lmay et go and may not go past 6500 rpm's , since the sr will increase rpm's,

another thing is were trying to up the compression to where we had plan, 10.2 for an aluminum head is too conservative, so that has to be measured and dealt with.

explain 114 lsa vs. 112 lsa if you care...

what advantage to porting the sr if any? what parts would be grounded. base plate, runners?

 

PN = part number... he's saying you got a custom grind.

10.2 isn't that bad....

LSA = lobe separation angle....lower lsa means more valve overlap... exhaust/intake lobes are positioned closer together. Look up "Got Lobes camshaft" on the net for more detail about terminology and effect.

Porting the base & runners of the superram WILL increase power -- esp mid/high rpm power for a 383 with 195 heads. It can raise the peak too (depending on limits of your other parts).

 

Can you say sticky 315's?

(I would have responded yesterday, but I couldn't concentrate long enough to make it thru your one, looooooong..... sentence! )