emo-vet

hi guys,
my new 8 t/b pictures are on page 2 !!
i just came across this comp cam.
292 xfi hr13 hydraulic roller cam
adv = 292 intake
300 exhaust
duration @ .50" 242 intake
248 exhaust
lift running 1.6 ratio rockers
0.584 " intake
0.579 " exhaust
for computer controlled vechiles
rev range is 2,200 - 6,200 rpm
113 lobe seperation
cost $ 259.95
must need chip,headers,exhaust,larger fuel injectors,lower gears ,intake manifold e.ct they comp say on page

what do you think of that cam guys ???
pretty aggressive isnt it ???
im thinking to buy this one to go with my speed vette with 8 throttle body cross ram intake along with afr ported heads 195 cc,3.875 stroker crank.
i was comparing specs with tpis large cams and this on ei mentioned is larger than them all.
cheers
shae

cv67

At that size Id go solid roller, thats just me though.

I would discuss this at length with a tuner first, thats a good bit of cam for a SBC...That one will need to be done in person to get it right.


Note: Bigger isnt always better but if the setup will take it...

byebyeL98

I'm running something similar on a MAF set up, tuning it myself, and have MANY hours of tuning and data logging into it already. It can be done, but it's not a walk in the park.

AKS Racing

Running a considerably larger cam (249/254° @ 0.050, 0.670+" SR on 112 ICL) with FI. I never could get the tune right when burning chips for a factory ECM with MAF. But aftermarket ECM makes the tune fairly straightforward.

Aaron

hexane

That cam would be hell to tune with a 396. A little too much cam for a comfy daily street car. My old 383 with the CC306 was decent for everyday driving.

staugur

Hi EMO.which of the 8 ports did you go with and what did you pay?And how good is it built?

Zix

That's a bit bigger on life, but slightly smaller on duration than the cam I am currently running;

242/252 duration @.050
.55x/.56x lift with 1.6 rockers
110 LSA

This is a Lunati hydraulic roller cam that I have taken to over 7000RPM and it continues to make power.

hex

You need a wider lobe sep on that cam, for running individual throttle bodies. 11:1 or higher compression would be a smart idea, as well.

emo-vet

hi there all guys,
thanks for all your replys r.e the comp cam !
staugar i brought the dc&o 8 t/b cross ram intake for $ 3,300 aus dollars!
t/b shafts have bearings installed
it comes with 8 x 50 mm diameter t/b,s & cross ram 1205 ports.
120 mm long trumpets
cente throttle linkage, comes with m.a.p ports under neath,running red uni filter socks for the moment.
i will be posting up some pictures soon ,but i will need someone to post them up for me if possible, so may i email the pictures to one of you guys please to post up for me ???
cheers guys
thanks
shae

conv90

me

conv90

OK, about compression... could you be more technical on the need of wider Lobe separation angle for the 8 IR setup?

emo-vet

hi beppe,
how are ya!
ok mate i will send you the photos to put up for me,thanks!
i was going to be sending them to you first any way actually as promised.
yeah i would also like to know more about the cam lobe seperation actually ??
with the wider lobe seperation do you need a smaller number or larger number ??
the cam i mentioned above though would be a real ripper though mate,thats for sure!
hey beppe, bosch vette doesnt run a idle air control on his 8 t/b and says it runs a little rough at idle when first start up but after that is ok.
but i have the iac mod done anyway!
cheers
shae

BlackC6LS3

I have something very similar, but solid roller, in my 396 and its not too bad.

AKS Racing

If you were posting regarding my cam, I run it in a 408cid with mid 20psi boost. It would be fine for a DD, but the issue is the wear and tear on the valve springs (700 psi springs) and valvetrain (Jesel shafts). Another key item, is aftermarket tuning. I tried for a long time to get the tune right with burning chips (even with great assistance from Jeremy and Eileen Formato; great guys), but could never get it just right. Aftermarket tuning is way more practical in these types of applications.

As a side note, this combo peaks torque at just under 6000 RPM, but will pull from 1600RPM on the street. At the old boost of ~12 psi, it made 430 lb-ft at 2600 (lowest recorded RPM) and carried somewhere from 500 lb-ft to 760 lb-ft between 3100 and 6200 RPM (where we stopped the pull). Don't be afraid of the "big" cams if you know your tune.

Aaron

emo-vet

r.e the tune, i will be getting pcm for less or fast chips to do the custom chip/tune work !!
so what is the ideal lobe seperation then to run ?
also whats the soild roller type cams mean please compared to hydraulic roller cam ?
cheers
shae

95wht6spd

Seems ok for a stroker, I would go lower # LSA, and .6+ on the lift using 1.6RR.

AKS Racing

lower LSA typically means the engine will rev quicker, but be more difficult to tune and will take a hit on emissions. Typical emissions compliant cams start at 114 LSA and some go up past 117 LSA.

SR cams will have a solid roller type lifter instead of the typical hydraulic roller, which will allow higher spring psi and thus much more agressive ramp velocities. Typical factory hydraulic rollers are limited to ~135 psi closed seat psi (375 open seat psi), while a SR can have in excess of 300 psi closed seat psi (upwards of 700 psi open valve spring). You can judge by the psi limits which will do a better job of controlling the valve when high RPM and agressive ramps are involved.

Aaron

emo-vet

hi aaron,
thanks for your explanation on the lsa,s mate!
so then that come above mentioned at 113 lsa is in bewteen them all then as far as performance and emmisons then ?
so do you think that the cam obe i mentioned will still be good then please ?
cheers
shae

STL94LT1

You may have a hard time with a mail order tune and that camshaft.

emo-vet

i was just wandering kindly why it can be a problem please ?

as i honestly wouldnt have a clue actually,lol !!!

whats the largest cam facts/figures that a custom mail order tune can do them please ??

cheers
shae