Peetyz

iTrader: (7)

I made 390/375 with a slightly rich 12.5 Air fuel and Stock 241's. My cam is almost identical and my 04 ls1 GTO has slightly more drive train loss than your Fbod so 380-400 seems right with good tune.

My power mods during this pull below was headers no cats, cam, catback exhaust, AEM cold air intake. Still had stock 241's and stock ls6 intake. I have not been back on dyno since modified ls6 intake with 85mm tb and my PRC stg 2.5 5.3's =) adding green top injectors and dyno tune soon

LS1-450

iTrader: (33)

There's alot of good information here so it's almost pointless for me to post. Although, I will...You're gonna need upgraded springs (918's minimum) to handle that cam so you might as well @ least polish the heads while they're apart. Smoothing the roughness in the 241's will help slightly.

The "increase the compression" comment is the most important part. Running on an .030" Cometic head gasket is similar to decking the heads .025" & will get the compression up.
Check the piston to valve clearance, but, it should be OK if heads haven't been decked before. Probably gonna need @ least Accel 30# injectors (36# when used in an LS1, higher fuel pressure). Don't forget, new push rods after confirming the new required length.

flintwrench69

iTrader: (11)

Yes you will or should install better springs & it would improve flow removing & porting the heads. I didnt & its not necessary to remove the heads to install springs. I wouldnt recommend porting heads unless you know what youre doing.

Talking about removing the heads again & it sounds like that is not in his budget right now. When I did my cam swap, I spent 1 grand with texas speed. Thats cam, pushrods, springs, oil pump, gasket kit, balancer bolt, new timing chain. I also bought Tims valve spring compressor tool that worked great too, for $35. Then another $450 for a good dyno tune.
Yes new pushrods are needed, but not injectors if doing cam only. I had mine dyno tuned on the stock injectors & theyre fine. If doing heads too yes. You shouldnt have PTV clearance issues with this cam on stock heads. I have this cam, mods in sig I put down 380-384 on a mustang dyno, so over 400 on a dynojet. From what I have seen from most setups, 380 whp is typical without any head work with an LS6 intake. Its a nice street strip cam, I think you will like it. I expect to be putting down around 430 or so whp with some trickflow 215s with this cam.

02LS1ram

iTrader: (17)

ur injectors will be maxed out , I know mine were bad like 112% duty cycle that's why I think it's a good idea to get 42 lbers IMO

Austinma62

I am plannig on going with the cam kit from TSP and as far as injectors Im not sure yet. From what I have researched on here it sounds like its going to be borderline if not maxing them out. So ill probably upgrade those as well for some added insurance. What sizes did you guys go with/recommend?

garygnu

#36 should work ,allowing for a head up grade later.wait 1 or 2 months more to get PRC heads also ,you won't regret it.that way their can spec a better cam for more power in the end.I do believe TSP offers CNC #241s and a cam for $1100.

Texas Heat

iTrader: (9)

406rwhp with my 228R and full bolt ons, getting tuned this week with the FAST 90/90 setup, will let you know what i gained.

Austinma62

Thanks everyone for all the info, and inputs. I appreciate it

orangeapeel

iTrader: (18)

Hang on, if you plan on getting it tuned find out what size injectors you need first before going out and getting the wrong ones.

Austinma62

For everyone thats running the 228R cam only what size injectors you running?

Peetyz

iTrader: (7)

Im about to install some ford green tops 42lb but more for ls cars using higher pressure

fccs

iTrader: (26)

380-420 depending on ls6 or fast and depending on ported heads or not.

ArticFormulaWs6

My dad ran the 228r but with a set of 5.3 heads and he put down 409 hp. So with a set of 241 i say you'll be around the 380-395 range/ with a ls6 intake. Still should run like a beast though, that cam puts down good power. But if you throw a FAST on there you should be around 415-420. just all depends on the setup.

Austinma62

Thanks for all the good info guys. Im still on the fence as to the torquer 2 or the 228r. Im thinking now the torquer 2 cause im afraid I will have wished I went bigger down the road.

Austinma62

I have 119k on the motor, would it be a good idea to replace lifters? I know this requires pulling the heads. I just want my motor to be safe as possible.

navyblueSS

iTrader: (1)

When my car was cam only it made 400rwhp and 375rwtq with the 228R. Ran a best of 11.64 @ 116. Very good all around cam. I was running the stock 28lb. injectors.

hammertime

iTrader: (1)

Since when does a 228 cam (stock LS1 heads, LS6 intake) require injectors? Seems that there have been plenty of people in the 420-450 range running the stock injectors. Injectors won't make more power unless you are running out of fuel, and that shouldn't be a problem until you can afford to mod more. If that is in the cards later, buying the injectors now and tuning the current setup won't hurt anything, and gives you room to grow later. Thing is, when you change the heads and intake to use those injectors to their potential later, you'll still need another tune.

For what the injectors will cost you now, you could either save for the "what ifs", invest in a pulley or other supporting mods, or see if you can scratch together enough get the heads milled and have a quality valve job performed on them. You could make almost half of the gains of the 5.3's without touching the ports at all. If you can get the pockets sorted out and blended into the valvejob, you might get 70% of the way there for not much more.

SOMbitch

iTrader: (8)

Look around in the classifieds. I just sold the revised TSP 5.3's for $550 complete. They had 30k on the them but the last dyno run showed no valve float so they prolly would have been ok to just bolt on and easily get another 15-20k out of them if you don't beat on them all the time...

243's can be had even cheaper and with just a good VJ and bowl blend I have seen them flow 280cfm plus... I would definitely do heads if you can swing it....

You also might want to consider the El Torro custom cam that pred -z specs. It is a 230/230/.612/.592 an a 111+2 on XFI/X-ER lobes. Seach chrs1313 on here he ran bottom 11's at around 120mph IIRC on stock heads... I can get you the comp lobe #'s if you want them and chrs prolly still has them too...

I would definitely do heads if you can swing it....

bww3588

iTrader: (49)

for 525 bucks, TEA will do a CNC port job and a valve job on your 241's.

Austinma62

Damn, you guys through alot more info my way, in general I would like to add heads also. But thats really stretching my budget atm. I was looking at the el torro custom cam but couldn't find a whole lot on it. I did see how well it made torque down low which was very impressive and appealing, as this car is a street car. I could probably scrape up 500 bucks though for some used heads, that would be a good deal, now if I could find some that were in great shape is another question. In general it seems though your better off just getting the 5.3's or the 243 castings and working from there. I don't see it being worth while spending all this money on the 241 castings. Thanks guys keep it coming if you have something to add!