Dans91

LT1 Stage II Heads 2.02/1.56 with Hard Springs

compared to

LT4 heads stock, LT4 hotcam springs


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SVT Killer LV

ill be first to say if I did it again.. I would have gone with ported LT4's... hands down

AndyB

Yes

arnie

Guys, what was the question? To answer the ?, ported (done well) LT1 heads will blow past oem LT4 heads. Stickin' my neck out, cuz don't know what you refer to as 'stage 2'.

WheelmanZ28

Yea really

It depends what is considered "Stage II Heads"

Flow numbers??

Tru, any LT1 heads with some port work will generally outflow LT4 heads stock. There isn't a great deal of difference between the flow numbers of the LT1 heads and the LT4 heads. One of the main benefits of LT4 heads is that they are aluminum instead of Iron.

TA Dreaming

wheelman LT1 heads are aluminum too.

Z95m6

like the others said, It all depends on what stage II means. I would say most peoples stage II's would win over LT4's.

SStrokerAce

So if the stage II's flow more than the LT4's that makes them better? All depends, you can always upgrade the LT4's later and get them ported. Those things will really flow 290-310cfm where a LT1 will be lucky to get to a real 270cfm. Depends upon where you are coming from.

Bret

unTAmedLS1

Why would you say they are better because they're aluminum....Any f-body LT1 heads are aluminum just not the b-bodies(impala,roadmaster etc..) Maybe the 93s were cast but I know 95-97 all have aluminum heads if its an F-body or vette

PhoenixCIS

my LT4 heads flow over 280



after a little help

Kain

:ugh:

TreySpeed

so do my LT1's

BES-383

My LT1 heads flow 290+

S.J.S.

So will someone enlighten us all....what is the real definition of "stage 2" heads? Stage 3 and so forth.

Ai

It's a made up term, because customers just dont know any better & like to talk about things they don't understand... like flow #'s etc