I was wondering how much hp do you think i would gain if i got Vortec heads with a Vortec TBI Intake Manifold from GM performance parts, a cam


( http://store.summitracing.com/partde...1&autoview=sku ) will this cam work? or is my L05 not a Hydraulic Roller tappet? I am wondering power gains out of my 350... Any adjustments or ppl giving references to better parts is appreciated. Thanks

 

That's a very aggressive camshaft. Look for something a bit smaller, and with more LSA.
228* at .050 should be at your upper limit.

What year is your LO5? It might be a flat tappet, but partially setup for roller. ie. just needs drilling and tapping to finish it off. Unfortunately that's something you need to tear down the motor to do

 

The motor is a 1991. Out of a K-5 Blazer.

 

Flat tappet. Probably needs machine work to fit a roller.
Might as well stick with flat tappet for now, unless you're pulling for a complete rebuild.

 

what kind of hp gains do you think i would get with that stuff and a mild cam?

 

also whats the diff between a flat tappet and a roller? any power loss?

 

I would definetly start reading some books before you get in over your head with your intensions. Is this going to remain fuel injected?

 

waht do you think i'm stupid? i know how to do stuff i'm wondering cause i'd rather hear the info from real ppl than a book. i'm not too intelligent on the gains and **** but if i wanted to put all this **** in i bet i could do it pretty easily. minus the PROM tuning lol

 

What are you 16? Take it easy. I didnt look at the specs on the cam but mild cam, intake and heads id guess 50-60 horse.

 

also depends on your starting point...what heads and cam are in there now. If your only changing the cam profile a little and only gaining a little flow, you wont see much increase. If you are changing it alot however....

 

Its going from Stock truck heads and stock everything....

 

ok well better cam profile and better flowing heads, from your sig you already have improved the exhaust. if you're goin to the trouble of putting cam and heads on, its best to do the whole valve train: springs, lifters, etc...probably see 50ish hp gain..plus a bump in compression and a deeper power band

 

Obvously you don't know much about engines if you don't know the diffrence between a flat tappet and roller cam. Theres two diffrent kinds of eatch of those lifters, there are hydraulic and mechanical and usually a mechanical roller will yeild the most power but you gotta re-lash your valves like once or twice a year. Then usually a hydraulic flat tappet will give you less.

 

i know enough to pretty much do everything, and i don't know enough about the insides thats what i'm saying.... don't think i'm stupid cause i'm not. i don't appreciate the assumption. But thanks for the info..

 

You're not stupid you're ignorant. A stupid person knows the facts and ignores them. An ignorant person just doesnt know. Nothing to get mad about. No one is calling you stupid. What they are suggesting is that you take the time to read one of a million books on the small block chevy, so that you understand the different kind of cams and heads available, so that you dont make any mistakes that cost you time, and more importantly, money.

 

i do know stuff.... just not on heads and cams.. get it? I did my whole motor swap in just over a week only working on the car myself and about 4 housr a day if even that.. i was proud of that. the only *i*ch was moving the tranny around on a jack that was on carpet lol

 

dont be so defensive. You need to relax and listen to people. Otherwise you will put something together you wont be happy with. Learn from other peoples mistakes. Engine parts are easy to understand and easy to replace and such. But to build somthing performance oriented takes skill that you lack. Get a book and read it. I am so happy that i read lots of books, talked on this site and asked a ton of questions before doing my engine. We are only trying to save you money and time.

 

this is true, most of us are just here to help and socialize about our cars. We are like one big family, well, one that likes to flame each other and occasionally pick fights over insignificant things.

 

i don't like being called stupid or anything... thats all... i have far surpirior knowledge than alot of ppl around me besides a select few, and i agree that i don't have the knowledge on performance.... thats why i'm asking.

 

Wow.. so you can unbolt stuff and put it back together the way it came apart. You ARE smart. Oh and you have far less than SUPERIOR spelling and grammar skills. So stop bangin your aunt for a couple minutes and read yourself a GD book or ten... You do know what books are right? & yes I am rude & no I don't care.

Moral of the story, don't get pissy at people after you asked for help.

Oh & thank you for putting that huge Camaro sticker on your windshield to let everyone know well in advance.

And go roller cam all the way. I don't ever want another flat tappet. Rollers are amazing and with all the late models that have them they are cheap & easy to get.
And you probably didn't think I would give any advice after all that did you?

 

see its *******s like you that make this site suck! i asked one simple question and all i get is your stupid, you don't know anything.... just answer my ? and stop being dicks! (not all) you don't need to give remarks just answer my ?... why is it so hard... you would get pissed too if ppl gave you responses like uglybronco just did to me....
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plus that response by bronco wasn't even needed at all and was unnecessary... i wasn't even being mean i was just stating i don't like being called dumb...

 

Moving right along...

Nice ljnowell.... We are to flame on every once in a while. Keeps things fresh and upbeat eh? haha.

Read the article I have in my sig. It's a short and sweet intro to camshafts. It'll give you some of the buzzwords so you know which witch is which type of thing.

 

The article in your info says that 1987 and on are roller and pre 1987 are flat tappet... but my engine is a 1991.... does that mean its roller or they didn't use roller for every engine yet?

 

some blocks are machined to accept roller equipment but didnt come with those parts

 

is it really THAT much of a loss to stay with flat tappet? or should i really consider roller at the rebuild or upgrade time?

 

What did you do with your 305 you took out? That would have had the roller setup & should swap right over to the 350 block if it has the holes tapped in the lifter valley & the cam retainer provisions.

 

why would the 305 have it and not the 350? cause its out of a truck and not a sports car?

 

Something like that. Did you already send the 305 to the scrap pile? & you may still want to check the 350, Sonix may be right about it though. Maybe you can see down in there by just pulling a valve cover off and looking down the pushrod holes. I've never tried, and you will have to know what you are looking for.

 

#1: Nobody called you stupid but you. Lighten up.

#2: Nowhere in the Board rules are you allowed to lash back when someone says something you don't like. Cool it.

#3: If I see another **** in a post of yours, you're going to get an infraction. Circumventing the Board filters is clearly not allowed.

#4: The rest of you - cool it. You know better (or you should). If it wasn't so late I'd spend the time to edit out your misdeeds. Feel free to save me the trouble.

Now, flat tappet or roller isn't that big of a deal. Trucks got flat tappet lifters (generally speaking) until 1996. The '87-up reference applies to 3rd gens (and some other passenger cars). The main reason the factory went to the expense of roller lifters was the C.A.F.E standards - the .5 MPG gain was worth it to them, probably isn't to you. For the record, trucks were exempt from inclusion in the C.A.F.E. numbers (at least through 1995 - light trucks were included after that if memory serves) - makes sense that they got flat tappets, right?

As stated (although not as tactfully as could have been), a search would have answered every one of your questions. The TBI forum has all the info needed about 350 swaps when you retain TBI.

 

no i didn't scrap the 305 i still have it sitting in my garage.....

 

Why should 228* be my upper limit? Thats pretty darn close to stock isn't it?
Would i see any improvements? If i do a cam i will bye putting vortec heads and Vortec TBI intake on....

 

Huh, haven't been paying attention to this thread, my bad.

228* at .050 is FAR from stock. Stock on your TBI 350 (from a early '90s truck right?) is probably in the high 100's, like 197* or something. 228* is HUGE in comparison.
TBI doesn't like big cams, so pick something that will work with, rather than against, the rest of the system.

The xe262h and vortec heads are a great combo right there. The xe262h would also work with your current heads, but obviously would really shine with better heads (such as the vortecs).

 

WHere exactly can i find the xe262h? (link to site) i looked on summit but i couldn't find it... i must be searching wrong.. Thanks Alot for the info

 

http://store.summitracing.com/partde...2&autoview=sku

You don't need to show your signature on every post. Seeing it once is usually good enough to get the message across, now it's just taking up space, making me scroll further

 

So i will deff have to do some PROM tuning? cause idk how to do that stuff and i can't figure out the tech articles.... I could EASILY learn it if someone were to show me how... (i'm a hands on type of person)