cava454

Hey ppl, im after a head and cam package for my VR SS that could hopefully get me up to the 190rwkw mark and possibly a mid to low 13 sec pass.

I was thinkin some mild head work and getting them decked a bit, a Crane H304 (which i have) and a TP Dual Plane Manifold (have).
I also got roller rockers, timing chain and a set of Blue tops.

The rear main needs to be done, so i didnt know if i was best of stripping it down and goin the rebuild route.

ATM the motor is slightly worked and has realed off 163.5rwkw at ChipControl Dyno day. Can post dyno sheet if it helps.


Cheers

PVE

So this is your Cam?

HYDRAULIC - Rough idle, strong power in midrange and top end -6500RPM. needs 10-10.5:1 comp. 3.5-3.9 gear, hi stall converter, Modified heads etc. For Serious use.
BASIC RPM 3000-6500 Compucam H304
Single pattern 236 deg @ 0.050" 110 LC and 0.520" lift.
Sounds like a reasonable piece of kit.........

How many kms has the engine done?
Auto or manual?
You will most likely need a rebuild.

SLIGHTLY WORKED - adds nothing to the info... you will need to be specific.

Others, with more experienced, can comment on your target 260 rwhp

Jimma

That cam with a the dual plane manifold and a little porting and stock size valves, would make more than 350HP at like 6500 or 7000, and peak torque would end up over 4000rpm even with the dual plane. Calculator says that's mid 12s in a 1500kg car if everything is perfect.

So you're planning on going carby, or one of those billet 1000cfm EFI throttle bodies?

cava454

Motor has about 190k on it atm.
Other then the rear main needing to be done, and a rocker cover gasket, the motor runs fine, and hasn't giving me any headaches.

What ever is done to the motor atm, i got no idea, its how i brought it. But i do think it may have a small cam in it.

The car is manual, and i already have the complete Manifold and TB setup. I got a MSD TB 1000cmf

If i could do heads and cam i would rather that to keep costs down.

Thanks for the help.

MCEcomp

You can use your std banana manifold to achieve your goals,and save your money.

I have 304s with std man and crane 286 make around 195rwkw and have run in the 12.80s

__________________
3370lb HG prem 10.013@134
358 chev N/A flat tappet cast heads

cava454

well i already got the manidolf etc so ill keep it. the only prob is that the H304 cam that i got recomends 10:1 comp where the stock 5.0ltr has somethin more like 8.8 i think.

Will that be a big prob.

Was urs jsut a head and camer MCEcomp?

Jimma

That cam will be dog shit if your motor hasn't got the right comp. A backwards step.

MCEcomp

No it had ACL race pistons other than that it was stock

with that 304cam you need 10.:1Min

__________________
3370lb HG prem 10.013@134
358 chev N/A flat tappet cast heads

rlj308

what car was that in?

cava454

hmm i think a rebuild will then be on the cards. If i rebuild am i better off goin solid?

PVE

Depends on your application........ street or predominately strip

MCEcomp

rlj308

It was in a VN calais with big brakes and full interior

__________________
3370lb HG prem 10.013@134
358 chev N/A flat tappet cast heads

rlj308

well i have a very similar setup in my lj not sure what they way but if i could do a time around that i will be very happy.

Aliti

If you go go with the H304 you should be looking a over 200rwkw.

I currently run a 286, standard stroke 308, quaddy, performer manifold and I made 193rwkw. I could see that going over 200rwkw with only a change to single plain manifold.

cava454

yeah but the deliema running that cam is my comp ratio, which in reality means rebuild. is there another cam i can look at thats good and just sell the H304?