what is the most i can mill l92s on a lq4 without cutting

 

I'd like to know who ports the heads for Scoggin Dickey. If they're done by TSP, then I'd probably run a stock set instead. Makes ya wonder how much is being ported with all the untouched stock casting showing. Here's some pics of the TSP heads another member bought over on tech.

 

Don't want to argue, just wanna see the graphs. Post them please.

 

Which one would you rather run? Both setups are put near the same.

 

Thanks for the input yall I appreciate it. Someone asked what dyno the truck was run on. The truck was tuned by G-force motorsports in Pearland, TX and they have a Dynojet 248x. I know the numbers seem low but I'm guessing the 4L80E + 9.5in 14 bolt + 285's + 3.73 gears were a contributing factor. I have not had a chance to take the truck to the track since I changed the cam but before the swap I ran 15.5 @ 92 mph with a 5500lb race weight. I am going to try and go back soon to get some runs with the new cam before I bolt on a different set of heads. What are yall's thoughts on track times with the cam on stock heads vs. the TSP LS6 2.5 heads? I really just want to get this truck in the 14's if possible. Also, I'm thinking that a set of 4.10 gears would really help get me moving off the line since my truck has 285's and I have to overcome the extra weight of the 2500. As far as my choice on heads, I see the advantage of the TSP LS6 heads because they are a direct bolt on and I don't have to modify my intake or accessory brackets to deal with the clearance issues of the L92's.

 

He doesn't have any empiric data to back up any of his repeated bashing of TSP.

 

dunno if i would run l92s on a lq4, my opinion the l92 heads were made for high compression motors, the decks are thinner than most ls motors if not all of them, i milled mine .015 just to get 11:1 cr with a .040 gasket, but i am NA and using a lq9 stock short block. also i had a cam spected out just for my setup which i would reccomend anyone to get if they run these heads.. anyway wont go into detail just the way i think.

 

Those heads would be a great choice for you. Contrary to what you will read everywhere, L92 heads are not the end-all-be all. The cathedral port heads are still the best for under the curve power. You will pick up roughly a point of compression with those heads which will really help you out. Also, I can tell you that those heads flow a lot more than the stock 317 heads. I need to get a wideband on my setup, but my engine runs extremely lean on a stock fueling tables based on the narrowband o2s.

 

L92s and the truck intake will slap right on with no issues . . . but you will need 42lb Marines or bigger . . . or get adapters to run the #40s that the intake comes with.
you can run a 90mm cable TB with no issues.
I noticed that you have LTs . . . but you have a Flowmaster . . . Get a cutout for the track.
Shorter tires will drop times for sure !
If you don't want to run a different intake, I would ***** up tech for a set of used ported 5.3 heads . . . Either PRC or TSP

I've got close to the same setup that you have, but I'm an 04 and 4wd. I'm planning on running the L92s, L92 truck intake, and a cam in the 230s with a big split.

 

I still say TEA heads would be best and they flow much better then TSP heads