I've been researching a little and some of the big dogs are running big CC AFR's and ported.


How far can you really go with the stock LT1 heads, or how much farther can you go with LT4's.

Can you make some serious HP with these heads lets say some LE3's, or do you have to get some AFR's to make some serious HP.

thanks

 

Ai is getting 300 CFM out of stock LT1 castings,,,,,

 

I've seen over 600hp on the engine dyno on a set of LT1 castings and a soild roller.

It's not the heads that are the problem it's the intake.

I'm here to bash anyplace either but from the looks of your sig you better do a search on ARE.

Bret

 

Like bret said,

theres alot more potential in the stock Lt1 castings than alot of people give them credit for. its all about the combination that makes great numbers... something that alot of people overlook when their putting a motor together, they think that spending huge amounts of money on name brand parts is the only way to make power, which isnt true,
Im shooting for 500 rwhp with my build this summer with the LE3 heads, converted super vic, and carb. And is should be feasible, but its all in the tuning.


-john

 

I'm aware of the ARE reputation and regret the choice made. But at the time everyone boosted them up...I researched then too. But thanks. A small note, my buddy made 396 rwhp w/ stock cube LT1 ARE II heads and everthing to go w/ it..through a 12 bolt.


That's more what I'd like to here...less the carb..for me that is. But I was considering a future project of the LE3's, very large cam, and some other changes when I do my next motor. I wasn't looking forward to spending 3500 on some ported AFR's.

What about a Sheet metal Intake On the LT1 intake? Would that fix some intake issues?

Also, will I benifit from LT4 heads at this point?

thanks

 

I doubt you would gain much with the LT4s if any...


As for the intake, if you want the most power out of it the single plane is the way to go definately.



-john

 

LG has gotten over 475 rwhp out of a 355 on stock castings... but that's for a *****-out race motor. The point being: these heads CAN be massaged to work miracles.