KC Henry

Hello Everyone,

I am wanting some "Cam Only" recommendations for use with "806" 69cc heads.

The car is driven roughly 3,000 - 5,000 miles a year, and is used mostly for Drag Strip/Stop Light Showdowns.

I am NOT at all concerned with being a "Dyno Queen", but rather I just want it to run like a raped ape at the track. With that said, I am NOT interested in cam set ups that give the highest "peak" power, but rather something with a large power band that will net me the LOWEST ET.

Some suggestions already made to me are: MS4/Trex or the "Reverse Split" 230/224 type cams.

Here is what I have to work with.



- 1978 Chevrolet Caprice 2-Door Coupe (named Christine)
- Stock 1998 LS1 from a rear-ended T/A (The tune has been changed to raise rpm redline to 6500 rpm, and emissions deleted.)
- TH350 with 3500-3800 Stall
- 3:73 w/ limited slip
- Headmen Headers to true duals with "H" pipe dumping through Flowmasters at the rear axle (also have dual QTP E-Cutouts that work when they want)
- 28" MT Drag Radials
- Quickest ET so far is a 12.7 @ 104 mph with a 1.7 60'

On a side note: I may also be considering changing from the TH350 to something like a 700R4 or maybe a "Gear Vendors" Overdrove unit depending on suggestions and feedback on here.

Thank you in advance for your time!

KC Henry

Anyone ? lol

davidws6

iTrader: (36)

Since it's mostly track, street fun, I'd do 228/232 or the rev split you mentioned. Also 224/228 .. Anything bigger you might need a higher stall?

It's going to need tuned afterwards no matter what cam you stuff in it !

99Bluz28

iTrader: (35)

First upgrade the intake, for cams 224/228 up to a 228/232, and keep lift around .600".

squirlNUTZ

You can call Cam Motion, or Comp or who ever your favorite cam grinder and have them grind you a custom cam shaft for your big *** car

KC Henry

What kind of ET should I expect going from a 12.7 with a stock "806" heads LS1 to one with a Cam ? Are 11's out of the question?

supernova1972

With an LS6 intake (your LS1 manifold doesnt breath near as well) and a mid size cam I think you'll be able to touch 11s easy. I'd contact Texas Speed or Thunder Racing and let their gurus head you in the right way.

thunderstruck507

iTrader: (18)

look into the el torro spec cam (its a reverse split but more aggressive than the 230/224)

if I had it to do over I would have went bigger than the wanna be tr230/224 i run and i basically daily drive my car

SOMbitch

iTrader: (8)

What does the car weigh?

KC Henry

Thank you all for your advice, keep it coming !

Anyone on here have a "ET proven" Cam only (with "806" heads) combo I can look over and study?

Btw, the car is around 3800 with me in it (200lbs) and full fluids.

Joker98

iTrader: (2)

I ran the TR230 with my 806 heads in my 98 Z with all the supporting mods and for a Cam only car, it was pretty nasty! And the TR230 is got a pretty nasty idle to boot. That cam makes great low end torque and from what I was told by Thunder Racing is that it was designed for a "stock headed car" somethin you might wanna look into....

KC Henry

How much bigger would you go over your current TR230/224 if you could, and what kinda times did you run with your TR230/224?

What kinda times did you run with your TR230/224 in your 98 Z28?

thunderstruck507

iTrader: (18)

I don't have it sorted out yet, just recently got a stall and now I'm not hooking. Also still running a mail order tune. Went to get a tune but the driveshaft snapped so that ended that for now...trying to get it back together.

Best so far is a 7.92@87mph 1/8th mile spinning hard to a 1.8 60ft

I'm expecting mid-low 7s with traction and a tune

KC Henry

What does a 7.92 = in 1320 ft (1/4 mile)?

outkast6991

iTrader: (34)

my 230/224 netted me an 11.6 at a 3520 raceweight. your gonna need alot of power under the curve to move 3800lbs into the 11's

KC Henry

Is the TR230/224 going to be the best cam for my old square land yatch, or do I need to go with something more aggressive like a T-Rex?

outkast6991

iTrader: (34)

i'm no expert but i would think a peaky cam like the t-rex would be less than ideal. most guys with a t-rex or similar grind have a lot of gear and a very light raceweight to run a number. i'd be looking for a broad torque band. why not get Pat G or Predator Z to spec something around your setup? atleast you would have a cam that meets your criteria

KC Henry

Predator Z suggested going with a 230/228, .609/.588 111-1 LSA (111 LSA/112 ICL) if I recall correctly.

lexva_58

iTrader: (1)

where or how can a iget el toro cam.....
is it really much better than tr230...

cabotgsxr

iTrader: (2)

Will the TSP Tsunami 235/240 .654"/.609" 111 lsa clear stock 806 heads?