IcemanZ06

To those of you who have used an LT4 Hotcam in an Automatic LT1, what were your dyno numbers?

IcemanZ06

noone here has used an LT4 hotcam in an automatic LT1? :confused:

GlockLT4

Once my engine is in my car, then I'll have an automatic LT1 383 with a hot cam :)

vader86

the average gain is about 30hp at the rear. It comes with everything you need but you might want to consider a better timing chain and a vented opti to go with the chain. But you definitely need those 3.73s to go with it. Lcvette has a dyno chart he had posted before that gave something like 371hp after installing his hotcam and a few other goodies.

IcemanZ06

Is that with an auto or a stick because the Hotcam usually benefits the most from the upper range gains which the automatic cars cannot reach.

Anyone else with an Automatic Hotcamed LT1?

vader86

its just an average, i'm sure the stick gets around 30-35 and the auto 25-30. I would think that with 3.73's or 4.10's you could get to it all with the auto.

BowTieBlood

Is timing chain something you NEED with an upgraded cam?

What's a good timing chain go for and what kind can should you get if you do choose that path?

Also...call me slow, but what's a vented opti? (price and type also)

:cheers:

vader86

id run a search on hotcams if i were you guys, you might find somethng you really like. A vented opti is just that, it has vents so moisture can get out and not fry the damn thing, its at least as expensive as a regular opti, $3-500? i dont know on opti's i have an older vette. A better timing chain is a good suggestion, as yours may have crud in it and it can take the stress of the new parts, i dont think you MUST have one but its a good idea.

CROOZN

As you can see I have an LT4 with an automatic trans Sorry to say I havent kept it together long enough to dyno. The trans upgrades were needed for the higher rpm and increased torque. First I broke two stall converters and kept glazing 3-4 clutches. Fixed problem. Then I shattered 2 yes two rear ends! Now it is back together. So I can only guess that it does put alot more power to the ground than before when it was practically stock ( which dynoed 279@wheels )

mackeyred96

WOW, making all that power to break convertors and rears.
Why not a dana 44?

IcemanZ06

Mackey, how much did the conversion run you? I heard it was about $1500 for parts.

jpee

If you want one like Mackey (4.09rear) closer to $2000+ I have a 3.73 Dana 44 cost me right around 1500 + install

Goody

I'm doing the Dana44 install right now. Have to take a break to go to Sears to buy a couple of tools. I don't have a socket big enough to get the torque tube off the car!! Damn metric stuff all over the car. My tools from my older cars aren't much help with these newer vettes.
Anyway, I'll be into it for around the $1500 range when all is said and done. 3.45 gears....