i'm putting a lt1 cam into my car along with new springs to handle the lift and freshen up the valvetrain.
my question is, will i now have a lt1 redline? what actually constitutes your redline? i know i may not be able to flow up top but i am wondering what my redline would be.
thanks in advance
Andrew

 

If i were you I would go with a different cam. LT1 cam is optimazed for short runner setup and not TPI. LT1 is an anti-tuned system. When you put this cam in you better port the heads and base in the same time.

I bet you will not feel the seat in the pants difference unless you have a peanut cam in your car now. You have T5 so you should have a L98 cam.

This is just my opinion.
Good luck.

 

well i wasn't gonna give away my secrets until i found out how it performed on the dyno.
but yes i did port my heads and i have ported heavily on my base and siamesed the base 4 inches into the base from the side the runners attach. that way i have a second plenum in the first half of the base and each intake port can pull from 2 runners. so i would say my runner length is about what a lt1 engine is.
but back to my original question
what constitutes your redline and will my redline up or do i still need to keep it under 5500 rpms?
thanks
Andrew

 

The red line will stay the same. As stated before, the LT1 will not help much becuase you already have the better of the two cams. Dont waste the time or effort with that cam! Get something bigger. I did this swap in my which had the peanut cam and it was worth it.

 

this cam is like adding 1.6 rockers to the stock l98 cam which i had. but for the price that i got the cam ($100 for the cam, springs, timing chain, pushrods) i jumped on it. i was going to add 1.6 rockers but now when i do it i'll have even better base lift to start with. and since my engine was torn down already it was no big deal to swap the cam.
new87 what year lt1 cam do you have? i am putting in the 96 cam which if i remember right has a little more lift than the earlier years. www.projecttransam.com was down so i couldn't look it up but oh well

so what constitutes your redline? your bottom end?
thanks
Andrew

 

redline is kind of an grey area.

I would say that actual redline is the point just before valve float occurs. Higher rate springs will bring this up...now will your engine be making any power at that point? I highly doubt it. The bottom end of a 2 bolt 350 will probably hold up until after the valves float.

-peace

 

Most any spring summit carries should hold up til around 6500 or better.

If that cam is the specs outlined in DAN's signature, I'd throw it away.

-- Joe

 

based on this information
http://www.f-body.org/tech/tech.htm#cam3rd
the cam i had has

305 5spd / 350 AT 5000 5500 14093643* .404 .415 202 207 114.5 (115/-114)

and a 1994 z-28 which would be less than a 1996 has

1994 (Y-car) 10168531* .450 .460 203 208 116.0 (114/-118)

so i think the cam will help me expically with the porting i have done. i also got higher rate springs so i should be ok.
Andrew

 

The higher lift might help. Valves arn't open long enough, however.

116lsa should make it idle smooth tho..

Anyway, punching in the numbers, I'm figuring around 4000RPM
you'll hit 270HP, then you fall off, at 5000RPM your down to
250HP, and so on.

Using the old cam is almost identical, only a few (like 4) HP difference.

Using a 224/230, 502/510 profile you can hit about 315HP at 5000RPM. Thats actually the same profile I run in my Formula.

I played with lift anywhere from .465-500, and it only adds 5-10 HP, but the duration is whats really helping that motor.

I've been using this software for years, and its usually within 5-10 HP of what I end up with, so I trust it.

-- Joe

 

My cam is out of a 96 or 94 Impala SS, I forget which. But the specs were given with the cam as stated in my sig.