OneMeanZ

iTrader: (2)

What would that cost? And how would you convert it to reverse cooling?

Elysian

There is some welding involved, drilling some new coolant passages, etc. It has been done before and I'm sure some of the better race shops could fix you up (LS1speed, APE, More Performance, etc). As far as price, I wouldn't want to say. You figure you'll have the price of the bare heads (which are substantially cheaper for SBCI than for SBC II or III). You'll have the price you would pay for porting them anyway. On top of that, you'll have whatever the price of converting them would be. DART, Trickflow, etc, makes some SBCI street heads that flow 325cfm @ 0.600 right out of the box. You could probably get another 20-30cfm with a full hand port and 5-angle valve job. For an all out performance motor, it seems like it would be worth it.

1LOUD98

iTrader: (1)

Well seeing how your on this subject about old school heads i have a set of PRO-ACTION 220s for sell bare out the box 64cc,flow around 275 out the box(will flow just to see)and have not been converted yet! 850.00 plus shipping and will convert for x-amount of dollars!You can reply here or e-mail me at telly@futralmotorsports.com, THANKS TELLY

blkchevyz

any new times?

1LOUD98

iTrader: (1)

No,been to busy at work!Besides the weather here has been real SHITY!

blkchevyz

well i'm putting mine in this weekend... so we will see how it compares to my old cam (306)

Gripenfelter

iTrader: (1)

I put out 426rwhp with a LE2 (Joe O.) cam and Lloyd Elliott heads.

I'll post a video next month when I get a better tune.

1LOUD98

iTrader: (1)

With what kind of setup!

Fastbird93

iTrader: (10)

That's pretty schweet man!!! I just got my Joe O Cam/JPR heads car going again, getting dyno tuned on Friday, hoping for similar numbers.

Why ain't you over on the Speed Density board more often???

BizZzatch350

iTrader: (33)

Grip, you still auto?

V8_DSM_V8again

Just get these and nip at the heels of their flow without radical mods to fit. Well you'd just need to do a raised runner intake and I'm sure TPIS can do it.

http://www.airflowresearch.com/pages/215sbc_rr_lt1.htm

I have seen 525 at the crank with just ported stock heads and a tame (for a stroker) 225 at .050 cam..... and a TPIS intake mani...


I don't know that it is that hard of a goal to hit to justify going to 12, 15 or 18 degree heads and the increased expense they bring not including the modification....

Now those ARAO 32valve heads moded to fit an LT1 would be a sight to see....

Elysian

With a stroker all bets are off. I'm sure with a 396, a decent cam and some tuning, 500rwhp is cake. I was interested in hitting 500+rwhp with a stock cubic inch motor. At most, a rebuild (355).

disco192

Big Cube LT1 + SBC heads + Single plane intake + carb =

LS1 dominates LT1 for the most part on the street, but when you get good head work done on an LT1, then it levels the playing field ALOT.

Gripenfelter

iTrader: (1)

Sorry I never responded back to this thread.

The dyno I was using apparently wasn't calibrated so it didn't put out 426rwhp. I made a second run a few days later and it said 326rwhp LOL. So I guess they're having some issues with their dyno lol.

I have a 383 with Long Tube headers, 3200 stall, and true duals. I jumped on a superflow dyno recently and made 390rwhp with a bad opti. The dyno guys said if it weren't for the dip in the graph caused by the opti the numbers would have been somewhere north of 400rwhp. Not bad for an automatic with a 3200 stall.

I recently ran 12.11@116mph with a 1.868 60 foot. It was raining and I was running rich.

http://members.shaw.ca/daddyc00l/gimli.wmv

http://members.shaw.ca/lt1z28/Gripslip1.jpg (results printed one on top of the other...idiots)

skinnies

iTrader: (33)

Nice, now get the problems fixed and get some 11's.

Zac2003

could I use the same cam as telly without having my heads ported right now?

I plan to get them ported this winter or maybe sooner I have an extra set soon so i'll be able to have the stock ones on while I have the other set ported so I was wondering if it will make decent power with just this godzilla cam and no headwork yet...

thanks, Zac

METALBEAST

iTrader: (1)

In your opinion, can it be done with a hydraulic roller cam? I have heard of several instances of 383 and 396 strokers with 500 RWHP with solid roller setups, but I haven't seen anyone above 470 RWHP using a hydraulic roller cam. Seems you would need to spin the engine well beyond the valve float threshold to get those numbers. Any thoughts?

Elysian

I assume with enough duration you could hit 500rwhp in a 383 or 396 with a hydraulic roller cam (assuming LT1/LT4 heads). I'm not gonna vouch for how drivable it would be. I've never personally seen such a motor. I have seen a hyrdaulic roller GEN 1 355 make 575hp with a standard port 23* head, but they had an accel computer and some other goodies like 2" primary tri-y headers. My lasting memory of the car was that it was a dog to drive on the street, but when it got moving - it was REALLY moving. LT1 computers only allow revving to 7200rpm, so there is an obvious limitation there.

blkchevyz

bring up an old post but i forgot to post my times and dyno number.

ran a 11.72 @ 117.5 and dynoed 396 and 365 torque... with my car missing right at the peak hp so im sure it would of made over 400

i only made it out to the track once before i fried my clutch so im sure theirs more in it.

thats up from my 388 and 356 torque of the 306 cam. my best was an 11.82 @ 115 with it.

now if i could just figure out why my car misses.

Zac2003

what heads do you have on there? I made 357/365 on motor with stock heads, I need some heads