just want some reassurance on combo choices

Not necessarily. That Straub cam is fine. That Crower would probably work. Unsure about the Crane's, that isky 272/282 would be fine. Run it like you ran everything else last night but at the .050 valve events and let's see what happens
We have zero way to prove what intake manifold is present with those cams.
The Isky RR272/282 Is the smallest of all.
Just 53 degrees advertised Overlap.
Have to aim for high intake manifold vacuum.
Only sure shot guarentee.
 
They will seal. I know a guy who ran that Straub cam with EFI. It works. We know Rick's setup. We can assume your isky will be good vacuum
What's known tonight I guess you can pick.one.
I would choose the Isky RR 272/282.
Just 53 degrees overlap.
Should provide highest intake vacuum.
 
There is an EFI Tuner Mechanic I know on another forum.
Digital Corvette.
I have heard him complain of trying to EFI tune Hot cams with low intake manifold vacuum.
I witnessed several times last year in the Race Shop I worked at in Joliet Illinois area.
They all struggle with low or baseline low intake manifold vacuum levels.
 
There is an EFI Tuner Mechanic I know on another forum.
Digital Corvette.
I have heard him complain of trying to EFI tune Hot cams with low intake manifold vacuum.
I witnessed several times last year in the Race Shop I worked at in Joliet Illinois area.
They all struggle with low or baseline low intake manifold vacuum levels.
Agree, edelbrock tech said I would be fine with 10" of idle vacuum. Run that 272 with the .050 numbers. Apples to apples.
 
Agree, edelbrock tech said I would be fine with 10" of idle vacuum. Run that 272 with the .050 numbers. Apples to apples.
About ready for bed.
Work on it tommorow.
A new discussion with Grumpy.
Need a safety factor.
Much higher than 10 inches.
Engines wear and intake vacuum will drop.
 
Since the Main Goal now is cruise with EFI Edelebrock Pro Flow it makes logical sense to use one of thier matching cams.
Be 100 percent guaranteed to work.

LS & LSX engines built by GM Have very little cam overlap.
Known to make power.
Rely Soly on High Flow Intake Ports.
Closer you can get to 400-500 CFM intake port flow the better.

In a light car it does not take much Hp to Cruise 80-120 mph.
Overdrive or Tall highway gears used.
 
This happens alot in the Pro Tour Pontiac World.
Especially TA world.
Nearly 99.9 % want new car smooth idle.
EFI used.
Mild cams used.
DD2000 for them many times.
Happy with 300-360 Hp tops.
They can cruise to car shows.
What is wanted.
All too old to Race again they told me each.
 
Since the Main Goal now is cruise with EFI Edelebrock Pro Flow it makes logical sense to use one of thier matching cams.
Be 100 percent guaranteed to work.

LS & LSX engines built by GM Have very little cam overlap.
Known to make power.
Rely Soly on High Flow Intake Ports.
Closer you can get to 400-500 CFM intake port flow the better.

In a light car it does not take much Hp to Cruise 80-120 mph.
Overdrive or Tall highway gears used.
I agree, but you and I know we aren't going to be able to achieve the same flow characteristics with the non cathedral type ls heads. If I wanted to go go LS then sure, I would. I could make that a goal. The fact here is a want a long block that can be dual purpose so to say. Something I can put the pro Flo on, something I can stick an aed or pro system carb and run it either way. I have the pro Flo 3 in hand, I have a Holley single plane, I have an Edelbrock air gap. There is no reason the 272 isky you love wouldn't fit the bill for all three of those setups. Rockers Crower may be pushing it vacuum wise, but I honestly think it would work if I was willing to tune and use a gapless ring, the Straub cam will make the vacuum cut. No need to reinvent our choices, I think we had several good candidates. Still waiting for the 272 isky Dyno sheet with the @.050 numbers. Apples to apples. Show us that and let's see what happens to that stick with the correct timing events vs the others. The data was skewed with the advertised specs. That's a fact. But in all fairness and for my education purposes let's see the SAME data, on all those grinds. I'm not hell bent on stivkist with one induction system. I could careless. If the pro flow works, that'd be fantastic. If it doesn't I will put it back on my shelf for another build this winter and throw a nice carb on it all call it a day. No big deal to me. I will use it at some point. I'm not trying to milden this build to suit an EFI system. Yeah it'd be nice to have and use, but it's not a deal breaker for me.
 
This happens alot in the Pro Tour Pontiac World.
Especially TA world.
Nearly 99.9 % want new car smooth idle.
EFI used.
Mild cams used.
DD2000 for them many times.
Happy with 300-360 Hp tops.
They can cruise to car shows.
What is wanted.
All too old to Race again they told me each.
If I all I wanted was 300hp I wouldn't be using a dart block and all these other components. I want as much as possible, be manageable on driveability, we have the components. Run those numbers and let's pick and degree a cam and get some pushrods ordered
 
Grumpy has his favorite Picks for C4 Gen Corvettes.
All were EFI 1984-1996.
He has dealt with mostly 350 ci & Stroker 383 SBC for them.
400-406 done for a C4 was rare and still is.

A few 421 , 434, 1 454 SBC I recall.
All them had Drag Race FAST EFI.
Easily tunable for Race Cams.
Tune for Alpha Numeric Strategy.
2 Sensor input.
TPS.
Coolant Temp.
Nothing more.
Just Dump the Fuel in.
Like Vintage Crower and Hillborn Barrel valve injectiom.

Will look in Crower & Isky Catalogs.

Going to be difficult to crack 500 Hp.
No 400 cfm intake ports present.
 
This is probably going to take the next 2 nights.
Debate with Grumpy again.
I know he has some Cam Picks from Crane.
Going to have to Rely more on Catalog Info than Normal done here.
Has to be EFI compatible.
Only Guarantee there will high intake manifold present.
Should be 14 inches water depression minimum.
 
Ok. Eating my Dinner.
Got home late.
On my laptop now.
Looking at Crower Cams online.

Before I start engine simulations again I going to compile a Full List of EFI compatible Cams From Crower.
Crane cams.
Comp Cams.
Lunati.
Isky.

No Radical Race Cams will be chosen.

I allready see a 114 Lobe seperation spread from Crower.
Entire Opposite what we are used to doing here Normal Aspirated with carburetors or Vintage Barrel Valve Stack mechanical injection.
 
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