so my grandad, has this 68 Chevelle, and he has been dying to run my Maro, but i didnt want to, cuz he is a vet at all this stuff, grew up in the 50's lived it his while life, so i finally told him i wuld, and i know that he is running 68 Chevelle SS stock 454 dual magna flow exhaust and i think he has new 38lb injectors, but not sure what do you think will happen when i run him, does he have me, or what

Injectors?

The power rating back then wasnt as accurate as now.

I say you'll beat him

like i said tho, he is a vet, his driving is completely superior to mine, thats what im worried about, he shifts almost perfect, i have yet to see him miss a shift by more than a .5th of a second, and he also has been known within our family of drivers to have the best launch too....

Muh...race him. Whats there to lose. If he wins then get him to teach you. Nothing like getting taught from someone more experienced

Umm, Chevelles didnt get the 454 till 1970.
1969 could get copo 427 which was low 13 second car

70 LS5 454 ran low 14's high 13's With traction mid high 13's.
Doubtful, but Ls6 454 I would watch out for. 450 hp and probly underated by alot. Ran high 13's at over 100 mph so traction would be low 13's.

So its probly not stock 454 unless he got it out of a later chevelle.
Injectors? I am curious. He has EFI of some sort?

It will be close. I guess he will be running mid 13's or better since he is vet driver.

he swapped the 454 into it, i just meant he hasnt modded the 454, and im not sure of his entire setup

race him. I wish my grandad would race me

what are your mods again i know you have posted them i just cant remember. if he is stock and you are modded like i think you are you should have him it just depends on what kind of 454 it is.

not sure what his 454 is, alls i know, is that he removed thestock engine and replaced it with the 454, added a magna flow exhaust, and new injectors,

here is my setup, as of everything i have done/have on the car
1982 Camaro 383 V8
Crossfire Injection system (not worth sh~t)
Flowmaster Cat-Back
3.5in downpipe
Champion Heads
Cold Air Intake (cheap from AutoZone until i get the money for a real one)

im not sure if that clears much up, but i hope it does

i know he is running in the 13's and the best time ihave run is a 12.96 the last time i was clocked at the track it was a 13.04

A 'stock 454' can be anywhere from 200hp to 450hp.

Yes the 454 was down to 200hp at one point. My dad has a 454 from 1981 out of his Tow Truck. It produces 200hp but i think pulls over 400 pound of torque

we still didnt get a real answer to the injector question does he have fuel injection on this car or not???


i say the chevelle takes ya but its close...

1. hes got more experience ...than most here..LOL

2. you still havent told us all about the car

Yeah, if he has fuel injection that could be from TBI 454's out of trucks I think. But with injectors, that would mean a pro-flow like unit like edelbrocks and others. Or Ram jet intake from 502. Based on this, its hard to tell what kind of power he is making. Regardless, if your running mid low 13's or better, then chances are your gonna win based on "stock" 454.

u can just race him.it seems like it could go for u or for him.

well did you ever race him or not ...

did you find out what all the chevelle had in it???

Hey guys..... i did it, didnt catch him by much, but here is the rundown of it all, i agree, and he tells me to come over to his house.... i follow him off to a small two lane road, in the sticks of mississippi... so we line up, and he sez he'll count it down... so im like... ok..... he counts it, we're off, i get a good shot out of the hole, but then him being the great driver he is, he is still right there with me, so we are pretty much even through 1st and 2nd, on into third, i gain a little, i mean a little, and ive got maybe a foot on him, and the same for 4th and 5th, by the time we shut down, his bumper is at the rear of my door, so i did ok, my shifting wasnt the best, i kinda missed a couple of shifts by about half a second.. i guess, but my top end helped a lot, he congrated me, and i asked about everything that was in it, with the exception of the 38lbs injectors, magna flows, and the 454 swap, its bone stock...... so there it is

Nice race. congrats.

Never did find out if he has fuel injection of some sort did you?
Did you see the motor? If he has injectors, he has some fuel injection. 5th gear eh? Wow, you guys must have been moving!!!

the close ones are always more fun.

yeah, its a TPI, sorry i didnt post that, but it was close.... and fast...WEEEEEEEE

A stock TPI 454?

hmmmm interesting????

I was going to say that but didnt want to go there. I am glad someone brought that up.

Perhaps AS&M big block TPI setup? or ram jet 502 intake? Interesting indeed.

yeah find out exactly what he has on this chevelle for us .....im interested ....

didnt you say hes your grandad sit down with him and ask him exactly what he has in it ...

sure, np, ill go over there tomoro and see whats up with it, im just taking his word for what he sayz, seeing he is incredible with cars

sure to tell us how it goes

forget going over there, i called him, he says that the tpi is an as&m set-up, so i guess it wudnt be "stock" i wudnt kno, since i dont mess with big blocks at all, i am still on a small, but im sure that has nothing to do with it

It all depends on what year he took that block out of. If later 70's 80's then smog stuff limited power to like 200's. if out of a 60's-72 muscle car, then with that TPI setup and good tuning, it would add lots of torque and I think he should have taken you out of the hole and maintained that lead for a while. But your motor sounds pretty strong, except for the cross fire unit. LOL ditch that and get a real fuel injection set up and you will run real good.

even that doesnt matter once you rip an engine down and replace everything in it and do some performance apps to it like a port job on the heads ......


its just a block when you rebuild it its a whole different engine

He said it was a 454 stock motor taken out of another vehicle. i assume everything is the way it was minus the addition of fuel injection.

he didnt mention anything about the motor being rebuilt or anything else done to it. Just AS&M tpi unit.

If it was rebuilt, then unless you know what he put into it, theres no way to tell what it will run.

exactly what im saying to

if he put this injection on it i doubt he put a used engine in the chevelle without rebuilding it ...althou ive seen weirder things in my life....LOL

Yeah, I guess your right. I wouldnt have put that setup on some stock 454.

I guess he's got a mild build up cuz how fast do you think a 383 cross fire runs? Based on his sig?

i dont know for sure i do know that the crossfire injection isnt one of choice at all ...lol

my uncle had a early 80's firebird with that on it and man was it a dog of course it wasnt a 383 ...LOL...

either way something doesnt sound right about the whole thing

i herd the cross fire systems always sucked. but i could have been miss informed. duel quad tbs sounds like it could be a good set up.

i would need more specs on the motor to get an idea of what it will do. I am sure that the intake is holding him back. I bet a stock TPI would run better on that thing.

Cross Ram intakes are nice. Dual Carbs side by side, for 69 z28. I seen it and it flows good, but dont know about cross fire.

my CFI is absolute sh!t i am planning on replacing it with a TPI, but i am at a shortage of money, only being 17... (hence why i have so many race stories, i am still young compared to most of you) but yeah i wanna get rid of it, what wud be some good options for a TPI that u guys wud suggest

I'd say stealth ram if emmissions/visual inspection aint a problem. Or super ram if that is a problem. These two flow best and 383 will love it. Big increase in HP. Do some searches for them and you will find some peoples combos to give you an idea what to expect. Superram is expensive, so find it used. Stealth ram is cheap. 500 bucks for fully polished one with fuel rails.

doesnt sound too bad, i'll see what i can find, thanks man

good kill byrt Coulda go him better with your shift. Look nothin to worry about

Why remove one HP restrictor, and replace it with another one. If you want the effects of TPI, put on a carb, and install a rev limiter set to 4500RPM.

thats a great ideal get a carb and a cam that can make some high rpms.otherwise the rev limter will be a waste.

he was refering to restriction TPI has. a carb and limiter set to 4500rpm is same as TPI. No flow past 4500 rpm and on 383 thats even lower which means you got a truck motor. LOL

I thought it was 4400rpm?

same thing LOL

lol but cant TPI hit 5000rpm? On my Gauge the Redline hits around 5000rpm

LOL, my car doesn't even make power until around 4000 rpm. I want low end torque and more leg room.

It can hit it but even with a 305 you're far past your peak rpm of 4400rpm. Aftermarket fuel injection is the only way to fly.

Stock thirdgen TPI is simply too restrictive for a performance application with the long 'tuned' runners and various other nuances that add up to a whole bunch of mediocrity.

Of course technically LT1s and LS1s also use a form of TPI.

The primary difference is the intake. Once you move to a Holley Stealth Ram or Miniram you no longer have TPI. This is because the 'tuned' intake is what makes TPI what it is. Keeping the stock TPI intake is a silly thing to do if you're concerned about making power.

after changeing intake. spi and/or a mpi ????
j\k

im sure it just makes it a
upgraded fuel injetion system.me i like v4 aka 4brls

so what would the smarter thing to do be? replace the CFI with a TPI or to get a carb??? im confused

Put on a carb

Depends on your budget or goals. You can make decent power with upgraded TPI components. You can make greatest power with super ram, miniram, stealth ram, or carb.

Do you like fuel injection or carbs? just an opinion thing. Carb/intake probly be alot cheaper than upgraded TPI or superram/miniram. A stealth ram is close in same price range.