97badass

iTrader: (8)

ok what are the intake options for these lt1s? i seen one guys that looked like an old school intake with tbi on it?? it was nice!!! and also is there much of a power difference going with one of those over the regular lt1 style? and is it going to be a fuel hog after its switched over to that?

joelster

Options:
stock,-- good for up to 400hpish
ported stock,-- good far beyond that, maybe 550ish?
single plane, 4bbl TB,-- good for very high rpm, **** for a street car
single plane, custom elbow-- good for high rpm, gives up down low

joelster

PS, when you see a 4barrel throttle body on a single plane intake on an LT1, it is usually an indication that the owner ditched the stock pcm, and went with an aftermarket controller, usually because the motor is built to rev past 7000rpm, which the stock pcm can't do.

96capricemgr

iTrader: (1)

Don't ASSume that the intake needs to be changed, in the 90s both Lingenfelter and Edelbrock tried to come up with new intakes and admitted failure. Edelbrock has lost some integrity since and released an intake but sofar it looks like a joke, one guy here posting a 5hp gain on a 370rwhp car there were signifigant variables so not a great test but is a test. On the b-body board a guy tried one on a stock motor and thermal coated along with a tuneup and lost .2 and 2mph in the second 1/8 mile, the weather was not the same was warmer but you would think a fresh tuneup would offset that some and the fact the first 1/8 mile was similar and the second slower is interesting.

I would like to see some more controlled tests of the Edelbrock but given their heads and what little we have seen from the intake I doubt it will prove to be worth the over $400 pricetag.

Lots of guys will claim the single plane intakes are the only way to make serious power and for every one of them there are probably 2 guys making more power on stock or modified stock intakes. One guiy even posted dyno results here lost below 6000rpms and gained a fair amount above but said he said in hindsight he would not have done it. It cost an easy $1200 to put a carbed intake on and keep injection that coin is better spent elsewhere.