superdave269

Well now that I have my new Edelbrock E-street heads on I can tell I have a worn cam lobe. It's always something!! UGH!
Years ago I used to use the crane cam 113801. It has a great street cam with lots of power. .278/290 467/494 lift it would snap your head back with it hit 3000-3400RPM.
Anyway I don't believe it is offered anymore.
I found a Trick Flow cam TFS-31401001 284/290, Lift .480/.495 I think it's pretty close to the old Crane cam.
The engine is 350 030 over, flat top pistons, Edelbrock intake & heads, Holley 750 DP, 4 spd trans.

Any suggestions?

REELAV8R

Hard to make a recommendation on that cam without CR information.

https://www.summitracing.com/parts/tfs-k31401001

you see where the cam comes in, 2600 rpm. Is that where you’d like the power to start or would down lower be better?

superdave269

REELAV8R the cam you posted in your reply is the one I am thinking about buying.
True CR is unknown but I would assume it's 10 to 1 as I have flat top pistons and 64 CC heads. Thats a pretty old school stock set up by those numbers. I'm 30 over so maybe 10.25 to 1.
Yes I think making power at lower RPMs would be a plus.

REELAV8R

Something with specs similar to this cam would be better then. I’d look for a 110 LSA vs the 112, but 112 would work too.
https://www.summitracing.com/parts/c...make/chevrolet

note the operating range, duration , and CR recommendations.

randallsteel

I have the exact same setup, except a different carb. I use edelbrock torker plus cam and I’m a big fan.
292/302 with .49/.49”
108 LSA so it has a nice chop at idle.
made 276RWHP with 26 degrees total timing. If you did 32 total it’d probably be 285+ rwhp.

Vette5311

I would look at something with around 230 duration at .050 max, check heads I think e street are .450 max lift but I could be wrong. 110 LSA rather than 108. Also I would look at older grind like a Magnum with slower ramp speeds for longer life. JMHO.

superdave269

Summit has that the heads have a maximum valve lift of .550 of course that doesn't mean that I am understanding that correctly. Just a rule of thumb that I have gone by since I was a teenager was 500 lift is pretty max for my sbc street engine. Back in the day manufactures had charts listed with lift & duration and application and required specs. As a teenager when I saw something like mild bracket racing I was stoked. Today I realize that I have forgotten a lot and am not to proud to ask for guidance. Back then changing a cam was fun. Today with my aching back it's pure painful work.

kossuth

What all do you know about the engine? How far in the hole are the pistons? Do the pistons have valve reliefs or are they just straight flat tops? That will dictate alot here on cam possibilities if you want to get longer durations and/or bigger lifts. You’ll want around .080 on intake and .100 on exhaust as far as clearance goes. If you keep the duration around 220ish and the lift around .525ish (assuming hydraulic roller) you shouldn’t have any issues unless you have a ton of advance ground into the cam or you advance it a lot manually.

superdave269

I do know that the pistons are TRW marked L2255 .030. I took a pic when I had the heads off last. They have 4 valve reliefs and a small round hole drilled in their center.
Currently there is a set of 1.6 roller rockers on the heads. Although I have a set of 1.5 roller rockers in the garage. Typical hydraulic cam. I never did a retro fit roller cam and don't think this is the time to try. If they were just a drop in fit I would go for it.

REELAV8R

1.7 rr. You sure about that. That would be a ton for SBC. We are talking SBC here right?

superdave269

​​​​​​​Opps that was a typo. They are 1.6 Good catch REELAV8R

REELAV8R

Very similar to these. TRW pistons are now speed pro.

https://www.summitracing.com/parts/slp-l2256f30

so let say 7.0 cc pistons to be pessimistic. The heads are cast 64 cc not CNC heads, so maybe 65-66 cc’s in reality if they did a good job.

let’s assume the pistons reside .025” in the hole (stock deck) and the compression height on the pistons is 1.56 like stock. Also assume a shim gasket was used to keep quench around .040”.

now any of these things could be wrong making the compression lower.

But If we assume all this to be correct your CR could be as good as 9.9:1.

augiedoggy

I have a similar setup (speedpro 4 relief flat tops with an undecked .030 block and steel shim gaskets with 64cc heads and 1.6rrs) I first ran the lunati 262/268 voodoo cam which was great but I wanted the piece of mind of a roller so I upgraded to the xe270xr comp retro roller cam last year and other than the engine being slightly more cold blooded with longer warm up times the upgrade has been positive for seat of the pants performance all around. both cams worked well as far as DCR and I run 90 octane or better.

gkull

113801 would be very different when you look at the actual valve event numbers

It's a great cam and what I used in my original l82 hopped up. Still available on Ebay.

114 lobe center for high vacuum and MPG. The. 050 duration of 222/234 for comparison to modern cams

I also used 1.6 roller rockers with it

boat196

The maximum valve lift, is referring to the limitations of the valve spring. This prevent the spring from coil bind.