John Millican

iTrader: (1)

I guess this qualifys as an "aftermarket product review". Enjoy reading. A member of this board authored the article (Tom Casey)


http://lt1intake.com/PHR2003AUG.htm

N8MAN1068

not bad.
so it looks like a 30ft/lb loss of torque. et was down a few 1/10ths, but pick up some mph.

interesting.

bigals87z28

oooooooo very nice! That is good considering the cost of the superram... now the true test... the mini ram.. both based off the smame concept. Very cool John! I would think that business is gunna pick up eh?

OMINOUS_87

The info presented was outstanding. In this situation there really wasnt a hands down winner, results would also be different on a smaller cubic inch motor.

I would love though to see a direct comparison of the LT1 conversion Vs. a miniram. I have a feeling that TPIS would put a reward on John's head!

N8MAN1068

word

i'm willing to run a stock 305 test if someone will donate the intake for me to dyno test vs stock tpi.
of course, i keep the intake at the end.

D M N

it doesnt seem to be worth it for that much money i would expect a bigger diffrence

John Millican

iTrader: (1)

Just how much of a price savings do you expect? those aftermarket "ram" intakes are expensive with the exception of one, the HSR.

D M N

i'm talking about a switching the TPI system of a 88 camaro with a LT1 intake

John Millican

iTrader: (1)

Ya I know, only 50 rear wheel HP increase with an intake swap alone, hardly worth the time and effort huh?

OMINOUS_87

The stock intake on any year of the TPI just plain sucks!!! You could replace the baseplate, runners, and port the plenum and still not match the average power that the LT1 intake conversion would provide yet you would be at near double the cost of of the LT1 intake conversion. Anyone who has intentions of having a fast car yet keeping the stock TPI parts will never realize their goal, if you wanna go fast you are gonna have to pony up for a new intkake or just stick with the stock stuff and go slow forever. The LT1 intake just happens to be one of the most cost effective ways of getting more air into the motor.

But everyone already knows this, makes me wonder why it is being rehashed again, LOL.

jfreeman74

The only problem that I have with switching to the LT1 or any aftermarket intake is the low end torque that you lose. That is what I like most about my car. Off the line the car pulls hard. Sure at the top end it dies but with light to light racing it's great. I'm not saying that TPI is the best intake but in my searching I can't find an intake that give the top end power without killing the low end torque.

MrDude_1

lets put it this way....


if you have gears, you already cant floor it from low speed. you wont notice any loss... besides, you only spend a second down low before you are at the top of the RPM band where you shift....

in otherwords, you will go faster, and lose basicly nothing that will be noticed...


this whole "lose rear Tq" on cars with 300+ ft/lbs is a moot point.

MrDude_1

oh, and as for a intake that can work at high RPM and low, look at the variable runner length designs...

look online for SHOs, the new BMW, heck, even the VR6 jetta has it...

why dont they make it for our v8s? we dont need more Tq

bigals87z28

then i guess the LS1's varrable runner length doesnt count right?

jfreeman74

You make a good point bigals about the torque. I am considering going to the Edelbrock base and runners once I install the new Torquer 305 heads and cam. I haven't decided which cam to go with. Bigals, I know you have the Torquer 305 heads(ebay auction). What cam do you plan on putting in with it? I want something that will work with the stock computer. I don't mind doing some tuning later on but I want it to work without too. See the sig for my setup. Here are the cam choices that I currently have:

XE249-12 206/212 .434/.444 112 LSA This one seems too mild.
XE256-14 212/218 .449/.456 112 LSA This seems best to me.
xe262-14 218/224 .479/.480 114 LSA

MrDude_1

damn straight it doesnt.

they stay the same length... its just a solid chunk of molded plastic... ie, no moving parts...


by "varrable" length, i mean, the length of the runners change... longer for low RPMs, and shorter for high..


my roomates SHO does this by having 2 runner setups and switching between the 2..

the BMW uses some form of twin "barrels"..



now some older race cars used to diffrent length volicity stacks in a effort to help even out the power everywhere..... but thoes arnt production cars.

ragtop88

Actually, ET was down 1/2 a tenth and if you look at all the times at the various point starting with the 60', you'll notice the SR is only quicker becuase of the better 60'....the LT1 intake actually runs the SR down as it goes down the track. The 30 ft-lb loss does jump out at you, I agree for sure, but as someone mentioned when you're making 350 ft-lbs at the wheels, it is not a noticable drop.....I can still spin the tires with no problem if thats what I'm trying to do. I've since put a bigger cam in but I've not had a chance to tune it or try it out. Hopeing it'll like the LT1 intake.

formularpm

If you are overly worried about the torque loss that goes along with ditching the LTR setup, get a set of gears. It doesnt even have to be much over stock, I installed a set of 3.45s along with my StealthRam; the gears offset the torque loss, and the new intake allows a much, much better top end. The car pulls all the way to redline now, and will still go sideways if I punch it at 25-30mph. ( not a good thing )

N8MAN1068

i'm tellin' ya..someone send me a lt1 intake, and i'll slap it on my stock 85 ta and have it dyno'd to see what happens.
better hurry, because i got some heads waitin' to go on too.

bigals87z28

when is going sideways not a good thing! i love going side ways! untill i hit a dry spot...

D M N

hahahaaahah

B4Ctom1

Yeah, if you sold crack at 1/3 the price of mine on my corner I would shoot you. LOL j/k TPIS has been raping us for years, they can either get reasonable or dry up and blow away as far as Im concerned. Either that or learn some phone manners.

D M N

but wait miniram stays legal with emissions but when you instal the LT1 intake you have to get rid of the EGR sensor so it wont be legal

bigals87z28

Thats when you have to go for "inspection"

John Millican

iTrader: (1)

The Miniram is NOT legal, it has no EGR just like the LT1 intake conversion.

Please check your info before you post.

bigals87z28

John, i must say very good. I finaly got my copy of it in the mail and sweet! a big thumbs down on not a word about tgo!!! hehehe jp, but sethirdgen got in there. They ran the same mph, and i would think the LT1 intake will react more to a longer durration cam then the super ram would.. maybe a cam swap to better suit the intake, then we would see the LT1 shine. I like that vert that they tested on... im thinking of getting a set of the SS rims... anyway, very cool john.

SLP IROC-Z

iTrader: (1)

hmm interesting.

KagA152

iTrader: (5)

was there any difference between the speed density (93?) intakes and the later ones that were mass air flow? besides obviously there must be an extra vacuum port on it for the map sensor

Greasemonkey

The 93 intakes have a different fuel rail setup, and don't modify as easily. AFAIK all LT1 intakes have the MAP sensor provision.