1.6 Roller Rockers ???

[90_IROC]

I was thinkin about adding a set of these to my 305. Has anyone done this yet?? Is it worth it (hp wise)??

Are they just a bolt in and go part, or is there anything else i have to do to run these?? ???

Any info u have is appreciated

[79 Z28]

prolly look at about a 10 hp increase depending on whats done to the motor

[89vert]

Just bolt them on,
I'll give you a hand if you want,
Have you ever set valves before?
zero lash is easy to do

[90_IROC]

Nope, i have never set valves b4.... actually haven't done any kinds of internal engine work b4 :-\ except for ripping one apart, im good at that ;D

I haven't even priced them out yet, the reason i ask is cuz i just went out and bought a jet chip for $250 and then realized the guy i bought my car off of had already installed one :o so now i have $250 that i have already budgeted for to spend on sumthing else.

Anyone have any other suggestions on how to crank out a few extra hp for cheap cheap???

[89vert]

pulleys or an airfoil, both good mods

[90_IROC]

airfoil ??? wuts that?

[79 Z28]

airfoil ??? wuts that?
its special wrapping, like tinfoil, but instead of using that its foil made from air ;D

[89vert]

airfoil ??? wuts that?
its special wrapping, like tinfoil, but instead of using that its foil made from air ;D

he's right but thats special for ricers to make their cars faster



I'm talking about this
http://www.jegs.com/photos/56163100.jpg
Jet's TPI Air Foils are engineered to redirect and smooth out the air flow to the intake plenum-the result is improved performance throughout the RPM range. Aerospace technology in the manufacturing process ensures a quality fit


They say its good for 5-8hp

[89vert]

http://www.jegs.com/photos/896100001.jpg


Product images may differ from actual product appearance.
Many hours of flow-bench and dyno testing followed up with comprehensive road tests proves this air foil will give you better throttle response, an 11.8 horsepower increase and 36 more CFM. Installs in less than ten minutes in 85 and up GM TPI and LT1 throttle bodies and carries a lifetime guarantee.

[93formula]

airfoils are a complete and utter waste of money. dont throw away your money on that!!!!!

but with the RRs youll need to upgrade your valve springs.

for 250 you can do lots, why dont you first post what you have done to the motor then we can offer some assistance.

[90_IROC]

I would post exactly wut i have done to my motor, if i knew exactly wut was done:P.... i sent my motor to my cousins shop and gave him my word to do w/e he would do if it was his, as far as i know, its pretty much a stock rebuilt 305, minor port/polish, balanced, blueprinted...... my cousin said it was prolly good to about 60-70 more hp then stock. i dont know any of the exact specs, like cam lift/duration, size of the valves etc, but ill talk to my cousin and see if he remembers.

[93formula]

on a stock 90 pcm, speed density ???, theres no way youd get away with a aftermarket cam, nor 60-70hp more.

if your car is a maf then youd get away with a small cam, good for about 20rwhp and if your heads had a stage 2 port work, then maybe another 20rwhp.

any quartermile times?

for 250 you can also get a stock lt1 intake and have it machined for the tpis, really wakens up the top end of those cars.

but yeah post back what you got.

[90_IROC]

well to tell u the truth, i have no idea how he got the hp out of it like he did, but i can defineatly feel a difference when im driving it. On the casing on my computer it has a label on it saying "remanufactured/updated by GM" w/e the hell that means ??? and it also has a JET stage 2 chip in it aswell, if that makes a difference, i dunno.

As far as 1/4 mile times, haven't run it yet this year, but with my tired ass motor and tranny i ran 15.45 @ 88mph or sumthing (just hammering it in Drive, lol)

[93formula]

the sticker prolly means nothing, maybe your pcm fried once and was remanufactured or replaced, the jet chip may help a bit, but post the results of the head work and cam that should be in there. is your year the speed density change over year or the maf year? i think it was 91, 92 that got the speed density for the third gens right?

[89vert]

on a stock 90 pcm, speed density ???, theres no way youd get away with a aftermarket cam, nor 60-70hp more.

if your car is a maf then youd get away with a small cam, good for about 20rwhp and if your heads had a stage 2 port work, then maybe another 20rwhp.

any quartermile times?

for 250 you can also get a stock lt1 intake and have it machined for the tpis, really wakens up the top end of those cars.

but yeah post back what you got.

the guy that built the motor is my cousin too, he builds race motors for a living, if he says 60-70hp it is, head work, mild cam, bump the compression, I don't see a problem with 60-70hp gain at the fly wheel

[89vert]

speed density on third gens is better than MAF for mods at least thats what I've heard

[90_IROC]

nope... mine has speed density ;D HELL YEAH!!!!! must have been 90 that it changed.

[93formula]

oh your talking FWHP, im talking RWHP, lol. yeah speed density is better. but tuning is a must for aftermarket cams. the car wont run right with a bigger cam. your fuel maps just go out the window. you cant just stick a cam in there and make it run right on speed density. the maf cars read the air coming in and readjust the tables a bit. if you were to get a custom chip matched to your cam then youd see some real gains.

[90_IROC]

sounds like ALOT of work :P i know my car wil never be a "race car" so im not looking for anything too serious, just sumthing that will smoke a mustang or any rice from light to light for as lil of money as possible, cuz like everyone else i have bills to pay >:(

[93formula]

then go wit full bolt ons, headers, ORP, good cat back, pulleys, RRs, gears. that sort of thing. a good tune will make a big difference too on speed density cars. weight reduction is a must. also the lt1 intake conversion. easiest bolt on would be nitrous ;D

also traction mods that will make you hook and launch faster, lca relocation brackets, boxed lca's, sfc's, phr, TA, good tires.

sad to say but third gens vs fox body mustangs, not too many third gens come out on top especially 305s.

[90_IROC]

yeah i know im dreaming, but w/e... and by the way, wuts ORP??? im not in the loop on most of these abbreviations.

i remember someone telling me that just put bigger injectors and larger TB and that would be easy hp, is this true? any comments?

[93formula]

ORP is off road pipe, replace the cat with a straight pipe, that can be bolted on or off for air care time.

do not go with bigger injectors on a speed density, youll actually lose HP. the bigger TB wont do anything unless you got ported intake and heads to make use of it. have you replaced your air filters with k&n's yet?

adjustable fuel pressure regulator on the other hand will make some hp for the speed density cars, but not enough to warrant the cost, its something that would be added with a host of mods and tuning.

[90_IROC]

i have a Hi Flow Cat in it right now, would a str8 pipe be that much better???

and i dunno wut size injectors it came with stock, but my cousin told me to put in a high volume fuel pump (big pain in my ass to install >:() and 19# injectors. that prolly as high as i should go b4 i start losing hp then??? :-\

And yes i have got k&n's

[93formula]

with out programming the HV fuel pump and injectors are useless your just gonna dump in extra fuel and run rich. yes the fuel pump is a PITA but theres always the cut mod ;D

incase your wondering, the cut mod, is when you lift the carpeting and cut out a section of your trunk behind the seats to reveal, ta da, the fuel pump, lol. i know i know a lot of people may say thats stupid lalalalala, but a lot of fourth gen guys have done this to there cars and have had no problems, i have had the cut mod on two fourth gens. you can replace it by buying a trap door that jegs or summit sells that can be screwed/welded in place then you can change out your pumps at will. you can find measurements on where exactly to cut online. i used a dremel to cut.

yeah a straight pipe will always out flow a cat, even a highflow one. do you have headers and a high flowing catback yet?

[90_IROC]

i dont have headers.... yet, my cousin said to get the most bang for ur buck, get cat back instead, so i bought 3" flowmaster cat back (although i have heard that magnaflow and other brands flow better) mostly for that flowmaster sound ;D

[93formula]

best bang for your buck is a full exhaust system, the flow masters are alright, what series muffler is it? the 80 series (i think) actually out flow a lot of the aftermarket ones. the single in single out one.

headers will really wake the car up, just dont get garbage heddman, bbk,dynomax. and for gods sake dont reuse the stock y pipe. hooker super comps and edelbrocks are known to be good for third gens.

[90_IROC]

If i were to get some 1.6 RR's would i have to buy valve springs or anything with it??? cuz if i do, im kinda leaning away from that...
but from wut i hear, pulleys are a good investment, and who knows, maybe within a few weeks i might have some headers too ;D

thanx for ur help

[79 Z28]

oh your talking FWHP, im talking RWHP, lol. yeah speed density is better. but tuning is a must for aftermarket cams. the car wont run right with a bigger cam. your fuel maps just go out the window. you cant just stick a cam in there and make it run right on speed density. the maf cars read the air coming in and readjust the tables a bit. if you were to get a custom chip matched to your cam then youd see some real gains.
this right here fortifies that carbs rule, nothing carb is limited at all, all mods, all types ;D

[90_IROC]

oh your talking FWHP, im talking RWHP, lol. yeah speed density is better. but tuning is a must for aftermarket cams. the car wont run right with a bigger cam. your fuel maps just go out the window. you cant just stick a cam in there and make it run right on speed density. the maf cars read the air coming in and readjust the tables a bit. if you were to get a custom chip matched to your cam then youd see some real gains.
this right here fortifies that carbs rule, nothing carb is limited at all, all mods, all types ;D

Yeah, if ur lazy and un informed, carbs are the way to go ::) so much easier to tune and gain hp.... but if ur willing to put in the time and the money, nuthing will ever beat out the performance of a fuel injected motor ;D

[79 Z28]

oh your talking FWHP, im talking RWHP, lol. yeah speed density is better. but tuning is a must for aftermarket cams. the car wont run right with a bigger cam. your fuel maps just go out the window. you cant just stick a cam in there and make it run right on speed density. the maf cars read the air coming in and readjust the tables a bit. if you were to get a custom chip matched to your cam then youd see some real gains.
this right here fortifies that carbs rule, nothing carb is limited at all, all mods, all types ;D

Yeah, if ur lazy and un informed, carbs are the way to go ::) so much easier to tune and gain hp.... but if ur willing to put in the time and the money, nuthing will ever beat out the performance of a fuel injected motor ;D
yea well theres a whole new world to be explored under 110 LCA ;). and if you think carb is easy, you thought wrong, computers give you everyhting right in front of your nose, with all sorts of readings and numbers to tune by. carb is all feel and experience. way harder to get a sweet tune out of. cant just plug in my laptop and see whats going on.

well if its all about being lazy and uninformed, then why are there dumbasses out there running FI cars, if they are dumb then their not allowed to have them. i guess all the racers and gurus out there running carb are dumbasses cuz they dont have FI. your logic makes no sence. as long as you have enough time and money? well show me a racer who does? its all about achieving the fastest and cheapest way. why would you spend $5000 on a FI system when you can do the same with $500. having some bolt ons on a previously FI car doesnt make it the best way, cuz you already got it, its cheap. everything has its place, FI is very specific in it applications, carb is way more adaptible and universial, wanna go from a 220 cam to a 260 cam?? sure just change the jets, you dont need to re design the whole system to accomidate things :)

[90_IROC]

Yeah.... :o thats wut i meant :P and by the way, i was only saying that to get a rise out of u, cuz i have noticed how opinionated u r(its a good thing u know wut ur talking about)... and thanx for the info

[93formula]

isnt efi outlawed in certain classes?

and you dont have to change jets on efi, you just do a few key strokes in the ol laptop ;D

[93formula]

If i were to get some 1.6 RR's would i have to buy valve springs or anything with it??? cuz if i do, im kinda leaning away from that...
but from wut i hear, pulleys are a good investment, and who knows, maybe within a few weeks i might have some headers too ;D

thanx for ur help


youll need guide plates, valve springs, retainers along with the 1.6 RRs

[90_IROC]

If i were to get some 1.6 RR's would i have to buy valve springs or anything with it??? cuz if i do, im kinda leaning away from that...
but from wut i hear, pulleys are a good investment, and who knows, maybe within a few weeks i might have some headers too ;D

thanx for ur help


youll need guide plates, valve springs, retainers along with the 1.6 RRs

i know u dont work at a parts shop, but ballpark, how much u think all that would cost????

[93formula]

cheapest new set of aluminum RRs i found were about 150 usd,

shims, retainers, guide plates, valve lash caps about 100 usd

valve springs roughly 150 usd depending on lift.

now some of these can be used, like the RRs themselves and maybe springs, i recomend new shims, retainers, lash caps. im sure theres something i missed. they also make RRs in 3/8 and 7/16, if you find a deal on the 7/16s then youll need 7/16 studs to mount the 7/16 RRs.

ebay is your friend :)

[93formula]

heres a sweet deal

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=2481298887&category=33624


http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=2481537607&category=33624

whatever you get, make sure you get alluminum. dont waste your money on steel, as your trying to free up some valve train wieght. and make sure its fully rollerized and not roller tip. or fulcrum tipped. and your gonna want self aligning roller rockers not non self aligning.

[90_IROC]

well for that kinda cash, i doubt ill be gettin those for a while ::) i think ill stick to my pulleys for now

but thanx for all ur help 8)

[93formula]

headers before pulleys ;D

[90_IROC]

i will if u buy them for me ;D haha

[93formula]

no ;D but just save up for headers rather then the pulleys the HP will be more noticable

[79 Z28]

no ;D but just save up for headers rather then the pulleys the HP will be more noticable
WAY more, touque too acant forget about that. power band will broaden making the car feel even stronger. i vote headers 100% you can find a good used set or get some for like 250 easy hp :D

[90_IROC]

no ;D but just save up for headers rather then the pulleys the HP will be more noticable
WAY more, touque too acant forget about that. power band will broaden making the car feel even stronger. i vote headers 100% you can find a good used set or get some for like 250 easy hp :D

$250??? wut brand of header is that? or are they all roughly the same price ??? i wanna make sure i get good ones when i do, and where would i find a deal like that (mopac, BB) ??

[79 Z28]

best buy, about 4 years ago i bought my full length hookers for 250 plus tax :)

[93formula]

check ebay, thirdgen.org and camaroz28 boards for a deal on used sets, also check buy and sell. for a new set, let me know what your price range is and ill see what i can dig up. best buy has some pretty good prices too.

[90_IROC]

well form wut i hear, hooker and edelbrock are the only way to go, and i dont wanna go cheap. so either of those 2 brand names, i would prefer new ones rather then used, id unno y, just reassurance that they are brand new and never been abused i guess ??? but yeah, either edelbrock or hooker, with y pipe if i can :P for roughly $300, cuz thats all got rightnow

[89vert]

I've heard you won't be happy with headers on a 305, that you lose to much torque, just what I heard :-\

[90_IROC]

I've heard you won't be happy with headers on a 305, that you lose to much torque, just what I heard :-\


ewwwwwwwwwwww :-X, i sure hope ur wrong, cuz 305's dont ave much torque as it is :'(

[79 Z28]

I've heard you won't be happy with headers on a 305, that you lose to much torque, just what I heard :-\
if you chose the right primary size its nothing but good, lets see restrictive cast iron manifolds or breathable tubes. hmmmmm ;D

[90_IROC]

well then wut "primary size" would i need to get for my 305 then??? cuz i want all good, none of this losing torque garbage :P

[79 Z28]

well then wut "primary size" would i need to get for my 305 then??? cuz i want all good, none of this losing torque garbage :P
id go no more then 1-5/8" that way they are good to move up to a 350 later on if need be too

[89vert]

I was going to buy 1 3/4 so when I put a 350 in I wouldn't need new headers but I was told I wouldn't be happy with the performance of the 305 with the 1 3/4 tubes

[79 Z28]

I was going to buy 1 3/4 so when I put a 350 in I wouldn't need new headers but I was told I wouldn't be happy with the performance of the 305 with the 1 3/4 tubes
yea, 1-3/4 is good for 475+hp 350's 425+ hp 383's way too big for 305

[90_IROC]

so apparently im gonna get 1-5/8" headers then 8) then after that, some UD Pulleys, and after i save up a lil more coin... RR's BABAY!!!! ;D

Thanx for all ur help guys ;)

[93formula]

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