fireman

I do 371rwhp peak @ 6300rpm N/A with stock heads other than LT4 valves. I have a rebuilt 353ci shortblock and a CC306. A year after that, I did 367rwhp. The guy running the dyno let out at 6000 when hp was still climbing, I'm positive it would have hit 371 or a little higher if he wrung it out a little further.

anyone higher?

I don't think my numbers are anything to get excited about, just wondering if anyone has been higher with unported heads.

Hark_Z

iTrader: (12)

This has been argued, but youre sitting pretty damn well.

Old SStroker

Here's one from about 3 years ago. If you compare the STD numbers you guys are pretty close on peak hp. Can you post your dyno charts?



http://web.camaross.com/forums/showp...1&postcount=19

97bowtie

iTrader: (1)

The main difference between your numbers and Jon A's numbers is that his car was a cam only setup. He doesn't have 11.5:1 compression, few more cubes and larger valves like you do fireman. You are going to have a hard time finding other setups to compare yours to because nobody really runs a setup like that with unported heads, and your car isn't comparable to all of the cam only setups because you are gaining some decent hp with the higher compression, bigger valves and extra cubes.

slick1851

Cam only means untouched bottom end...and heads


Hence CAM ONLY



I think you could get away with using the LT4 valves if not much of the head was touched for cam only records...

fireman

I not trying to break a record, nor did I say I was cam only.

thanks for your useless input.

fireman

here is the graph, this is SAE.

fireman

Yeah, I know I need ported heads. Car is begging me for 'em, everything else is in place. I'm even running 42lb injectors,Lloyd Elliot ported/welded intake, 58mm TB, dual 3" exhaust, etc.

I was just curious if anyone could claim higher numbers N/A with unported stock castings regardless of valves, compression, etc. But you are right about no one having a simalar setup.

slick1851

Most rwhp with unported stock heads?

Sounds like you were

slick1851

Does the intake have that dog box housing welded on or somthing?

fireman

There is metal added on the outside of the intake above the injector bosses. This allows the inside if the ports to be reshaped for, I believe a more vertical shot to the port on the head. I think they refer to it as "raising the roof" of the intake ports.

97bowtie

iTrader: (1)

There have been a number of solid roller setups roll 400+ with stock castings. When are you getting heads and what are you going with?

fireman

I'm thinking of having Lloyd port a set Trickflows for me. I really need to do some more research, I'm not really impressed with any of the options right now.

Probably next year on the heads. I'm about done with the cosmetic mods for now. Did the '01 T/A exterior conversion last fall, did 19" staggered wheels recently, and now the car is in the body shop getting repainted and a WS6 hood installed.

skinnies

iTrader: (33)

Exactly Jason Short did 400+ rwhp on stock heads with a solid roller setup 4 or 5 yrs ago.

ZONES89RS

iTrader: (25)

Hell, i wanna know what mine will do with mildly ported heads and stock cam with 1.6RRs.

lt197formula

iTrader: (6)

Nice numbers, now slap some heads on and see what she makes.

Old SStroker

In the 3000-3500 rpm range it looks like you are down about 40 lb-ft to Jon A. You can probably feel that on the street, even though Jon A's car was for roadcourse racing from 4500-6500. I believe he did street drive it. Optimising a cam usually helps.

Boodyrider

iTrader: (2)

You'll get about 280 RWHP. Maybe 8-10% more airflow is all, so that's all the powwer you'll get. Less without a tune. Maybe more if stock tune was poor.

TXFORMULA

you should look into those trickflow heads-ive heard that some people have had trouble with piston-to-valve clearance.you might be looking at other changes just to run those particular heads...

fireman

I'll have to pay close attention to PTV clearance as my block has been decked to zero.