Power from these items?
Thread Starter
Racer
Joined: Jul 2007
Posts: 256
Likes: 0
From: Glasgow, Scotland
Power from these items?
my car has stuff from these companys -
Q - jet carb
Holley intake
Lunati cams
hedman hedders
lonco - high performance clylinder heads
summit(not sure what?)
these items are on my 78 vette(L42) - what kind of power would it produce approx?
cheers
Q - jet carb
Holley intake
Lunati cams
hedman hedders
lonco - high performance clylinder heads
summit(not sure what?)
these items are on my 78 vette(L42) - what kind of power would it produce approx?
cheers
Melting Slicks
Joined: Aug 2003
Posts: 2,135
Likes: 2
From: Dayton Oh
The serious answer is that we don't have enought info about your particular setup to ever guess. The non-serious answer is that if you've got the stickers installed, they're worth another 25 HP.
Racer
Joined: Feb 2007
Posts: 262
Likes: 2
From: FREDERICKSBURG VA
Q - jet carb -What size?
Holley intake -Performer, Performer RPM, Victor?
Lunati cams -Whice one? Solid or Hydraulic?
hedman hedders -1 5/8? 1 3/4?
lonco - high performance clylinder heads - ???? more info
summit(not sure what?) -???? more info
78 vette(L42) - L48 ?
Holley intake -Performer, Performer RPM, Victor?
Lunati cams -Whice one? Solid or Hydraulic?
hedman hedders -1 5/8? 1 3/4?
lonco - high performance clylinder heads - ???? more info
summit(not sure what?) -???? more info
78 vette(L42) - L48 ?
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Q-jet, almost guaranteed 750CFM
Holley intake. Can you get any name or numbers off it?
Summit could be anything but perhaps it was for the lifters, push rods ect.
Sounds like someone certainly wanted more from the L-48 and put some $$$ into it.
Where did you get this info from?
Holley intake. Can you get any name or numbers off it?
Summit could be anything but perhaps it was for the lifters, push rods ect.
Sounds like someone certainly wanted more from the L-48 and put some $$$ into it.
Where did you get this info from?
Race Director
Joined: Apr 2000
Posts: 17,654
Likes: 190
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
1978 L48 = 185HP
Q - jet carb = 0 HP
Holley intake = + 10HP
Lunati cams = + 20HP
hedman hedders = +15HP
lonco - high performance clylinder heads = - 50HP
HP = 180
Q - jet carb = 0 HP
Holley intake = + 10HP
Lunati cams = + 20HP
hedman hedders = +15HP
lonco - high performance clylinder heads = - 50HP
HP = 180
Thread Starter
Racer
Joined: Jul 2007
Posts: 256
Likes: 0
From: Glasgow, Scotland
there's a bunch of stickers on the hood! lol, i can see its got the q- jet carb, i can see the hedman headers, its got a nice sliver looking intake, but the cams and clyinder head, how can u tell??
best thing to do is get it on some rollers and find out!
cheers
best thing to do is get it on some rollers and find out!
cheers
Instructor
Joined: Apr 2007
Posts: 148
Likes: 0
I agree with MOTORHEAD....a rough thought is that better breathing will increase hp as will better exhaust. The intake manifold and exhaust headers "roughly" increase hp MAYBE 30 on a good day. Depending on the other variables...cam etc. I like the example about the stickers!!!!
