Nice project! Those engines like between 1 and 4 degrees over base timing for best performance. ACCEL Ignition Control Module 35370 should be used for these applications, avoid ACCEL 35362. They are both listed as compatible but 35370 is based on GM's performance module and 35362 is based on GM's economy module. These modules have different latencys that are taken into account by the ECM. Use of the economy module will result in VERY poor performance in these vehicles. Additionally, if you are upgrading the ignition system you need to gap the plugs wider to get the benefit. The best mod for the money on those throttle bodys is to double up the gasket under the injectors - raising them above the bores and allowing more CFM's to enter the engine. Years ago there were "kits" with a double thickness gasket for this. Swapping to the 350 injectors is also a worthwhile mod. Some have bored intake to work with the 454 throttle body as well. There are still short tube headers available for third gens. I like the 2460HKR by Hooker, but there are plenty of options. I would recommend replacing the factory manifolds and exhausts as soon as possible as it made the most noticeable difference on my 305 TBI Firebird. Just remember that if you are pushing for 350 power you need an exhaust to accommodate that. The factory rocker arms have a tolerance of +.1 to -.1. Replacing them with literally any reputable aftermarket will improve performance, even if they are also stamped rockers. The H.O. 305 heads should be considered for any third gen owner trying to get the most out of their 305 as they flow much better, even without porting and valve work. Look for castings ending in 416 or 601 at the scrap yard, they are the first gen of Vortec and will support 1.94 intake valves and 1.55 exhaust. They can often be found on mid 80's trucks with 305s. The H.O. 305 also featured the 929 cam that was originally released in the 350HP 327 Chevelle if you like the retro sound and good low end to mid-range power. If you are looking at aftermarket cams don't go over .48 lift unless you have made major alterations or the valve will contact the cylinder wall.
@motorhead1528
4 жыл бұрын
I love the 3rd gen Camaros I own a 91 RS Camaro it ain't no iroc but I like it
@jaedagod9788
4 жыл бұрын
same
@darinr9424
3 жыл бұрын
trust me.... been there. yank that tbi off. put a 650 carb a performer intake and a large cap hei on it..... it WILL wake it up more than you think. some shorty headers and catback def will help with it. i put every upgrade avail on my rs.. even the big 670 cfm throttle body from holley. all the way down to a msd 6al ignition. everything bolt on you can do. it all failed till the carb went on.... then it said hello im awake now
@darinr9424
3 жыл бұрын
trust me.... been there. yank that tbi off. put a 650 carb a performer intake and a large cap hei on it..... it WILL wake it up more than you think. some shorty headers and catback def will help with it. i put every upgrade avail on my rs.. even the big 670 cfm throttle body from holley. all the way down to a msd 6al ignition. everything bolt on you can do. it all failed till the carb went on.... then it said hello im awake now
@EprofitdetroitTheProcess
3 жыл бұрын
I love them too check out mine build !!!
@4everknown
3 жыл бұрын
I own the same
@micahalbany5649
3 жыл бұрын
Good for you guys getting that irocz running faster. Keep it up. Now put some long tubes on it
@JJSmith1100
4 жыл бұрын
Glad to see the Iroc seems to have no hail damage from that storm some time ago.
@carreviewswithjosh8028
4 жыл бұрын
It has some but it is not very noticeable. I am so glad it did well too!
@loreleithoman8459
4 жыл бұрын
Your editing skills are fantastic!!! That second burn out though🤩🤩 it was epic
@carreviewswithjosh8028
4 жыл бұрын
Thank you, and congrats for being the first comment!
@jameshall4385
4 жыл бұрын
if you want a little more performance, get a 160 degree thermostat and an adjustable fuel pressure regulator. the old style computers need a chip burned, to take full advantage of performance mods.
@darinr9424
3 жыл бұрын
negative on the 160.... dont do it. 180 min.
@countup502
2 жыл бұрын
💯
@realsolarcars
4 жыл бұрын
Stick shift is what I miss most about my old car. Glad to see that the IROC is now quicker than a Volt.
@beltfedhate
3 жыл бұрын
Love the car guys! I own a 91 Z28 and I love seeing your enthusiasm!! Great job guys!
@typetime2154
4 жыл бұрын
Josh. We have watched your vlogs over the years. But we would like a Q & A vlog. Some of the questions we have are: is the other guy, who is driving the car 0:36, your brother? your hair appears blond, what happened? your age? your "dream" car (or truck)? your thoughts on Tesla...will it do what the Volt didn't do insofar as the electric car? do you like/ride horses? Tim Horton's or Dunkin Donuts? plans for the future, college or military? what does "Lord Willing" mean to you...your vlog good-bye phrase? Please consider any of the questions. But we always respect your privacy on KZitem. Thanks...
@kenjuicekrajewski9577
2 жыл бұрын
Really is like a 350 or adding a double pumper. Adding more gas and power in mid to upper rpm. Plus without your added weight It s a good trick. Great video
@derekfowles4063
3 жыл бұрын
You two remind me of Beavis and Butthead!😂
@benkalinowski5834
4 жыл бұрын
I can't believe it worked But it did My gta 305 tpi did 7.4 to 7.5 with me and my best friend 5 speed tpi not tbi Over and over again I put a cold air intake on it and a ads super chip and it needed prem gas after that buy it did 6.9 over and over I love that car I still have it obv
@SuperChristy66
4 жыл бұрын
Wow, that thing sounds sooooo good!
@jeffgallant730
11 ай бұрын
Any regrets on switching to the 350 injectors did u have to do anything eles
@dustinmccain1215
3 жыл бұрын
Car sounds great!
@EprofitdetroitTheProcess
3 жыл бұрын
Good video !!!! love thirdgens
@moralesarmando5071
3 жыл бұрын
Well done boys well done!!!!!
@carreviewswithjosh8028
3 жыл бұрын
Thanks!
@Microjoey02
4 жыл бұрын
Why put in bigger injectors without getting a chip burned for it?🤔 nvm it's a LG4
@trillrifaxegrindor4411
3 жыл бұрын
the lg4 is carburated,this is an L03
@qwerty-dm8gr
3 жыл бұрын
There was an Iroc without the TPI?
@chrisstrande5878
3 жыл бұрын
You can order an IROC Z or Z28 with a base motor 85 through 87 would be a carb LG4 88 through 92 would be the standard TBI motor LO3.
@Signme0011
2 жыл бұрын
Where are you Josh!! We need a new video! 😭😭
@onlyoneromeo
3 жыл бұрын
Inside of that car says z28 but its a tbi. I didnt know z28 came w tbi.
@chrisstrande5878
3 жыл бұрын
88 through 92 you can order a standard TBI motor
@darinr9424
3 жыл бұрын
holy crap get rid of that black ring at the middle of the air filter assy that sticks up.forgot how horrible the tbi aircleaners are. its been many many years
@devinlee3436
4 жыл бұрын
Is this healthy long term?🤔 i have a 3rd gen 305 with a 5spd hmmmm
@carreviewswithjosh8028
4 жыл бұрын
I guess we will see.
@markwilson9063
3 жыл бұрын
I've ran this mod for about a decade without problems. It will burn out your cat, if you have one, without burning a chip.
@devinlee3436
3 жыл бұрын
@@markwilson9063 no cat so i'm all good there
@devinlee3436
3 жыл бұрын
@@markwilson9063 Thanks for the heads up though man!
@Speedslays
3 жыл бұрын
Can't just put the 350 chip in?
@lilrico-ey8qq
4 жыл бұрын
Put 454 injectors much better that’s what I did on my old 89
@carreviewswithjosh8028
4 жыл бұрын
That's a great idea! Thank you!
@darinr9424
3 жыл бұрын
to much injector for a stockish 305 tbi. its been many many year but if i remember right the 305 has 55 or 60s. the 350 tbi injectors are rated 5pph each more than a 305. i think but dont quote me but stock 454 inj are 75 pph. and the holley 670 cfm uses 90 pph. i had a performer intake. i machined my own adapter plate and milled the intake plenum wider to accept the 2-1/16th throttle bore 670 holley unit. but the 90s were way to big. even with headers. 3" cat back and no cat. 1.6 roller rockers. isky valve springs ( had valve float at 6000 rpm on the spray ) causing nitrous sneezes at wot. had the msd 6 al box and coil. under drive pulleys yadda yaffa yaddda list goes on. 3.73 gears and posi. hughs 2500 lockup stall and a b/m shift kit...... long story short... i ripped the tbi off used a 650 double pumper and a old large cap hei and the engine really woke up and i mean ALOT. TBI COMPUTER IS REAL INTOLERANT TO ENGINE MODS.... f that tbi...
@lilrico-ey8qq
3 жыл бұрын
Darin R mine ran good kept up with a challenger
@raylewis6363
3 жыл бұрын
Let me buy them louvers
@mikelorah7455
3 жыл бұрын
This video is ok but the injectors for a 305 and a 350 are the same part number so changing them would make the car run better cuz your just putting new ones in that aren't dirty and clogged up a lil from years of use
@gabrielburuato6937
3 жыл бұрын
Wow and I'm here thinking on putting 350 injectors on my 305 but if it's the same part number I guess its only dirty injectors Thank for telling us
@gabrielburuato6937
3 жыл бұрын
Wow and I'm here thinking on putting 350 injectors on my 305 but if it's the same part number I guess its only dirty injectors Thank for telling us
@paulburkey2
2 жыл бұрын
@@gabrielburuato6937 350 and 305 are different injectors they have a different pulse rate their color coded on top, but it won make it run better probably worse and won't pass smog. Also you put the washers on top of the Orings, the washers go in first the Oring goes on top of the washers now try it with new 305 injectors with the white paint on top
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