low numbers?
Thread Starter
Instructor
Joined: Oct 2007
Posts: 108
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From: jax fl
low numbers?
so ive been looking around and i feel like my numbers are kinda low for my mods, heres a list:
stock bottom end
hand ported 853 heads with comp dual springs
234/240 .641/.649 112 cam
fast 102
ported 90mm tb
tsp coated LT 2.5 x pipe stock ti
vararam b2 and bridge
built t56 31 spline main shaft
mcleod rxt clutch
3.90 rear gears
car made 419/399 on a dyno jet
12.5-12.8 afrs under wot
28* timing
looking around at other cam only cars im seeing people make much more power. i think my heads are my big flaw but im not sure.
stock bottom end
hand ported 853 heads with comp dual springs
234/240 .641/.649 112 cam
fast 102
ported 90mm tb
tsp coated LT 2.5 x pipe stock ti
vararam b2 and bridge
built t56 31 spline main shaft
mcleod rxt clutch
3.90 rear gears
car made 419/399 on a dyno jet
12.5-12.8 afrs under wot
28* timing
looking around at other cam only cars im seeing people make much more power. i think my heads are my big flaw but im not sure.
Last edited by frcftw; Dec 30, 2014 at 03:33 PM.
Le Mans Master
Joined: Nov 2003
Posts: 8,308
Likes: 157
From: NJ
so ive been looking around and i feel like my numbers are kinda low for my mods, heres a list:
stock bottom end
hand ported 853 heads with comp dual springs
234/240 .641/.649 112 cam
fast 102
ported 90mm tb
tsp coated LT 2.5 x pipe stock ti
vararam b2 and bridge
built t56 31 spline main shaft
mcleod rxt clutch
3.90 rear gears
car made 419/399 on a dyno jet
12.5-12.8 afrs under wot
28* timing
looking around at other cam only cars im seeing people make much more power. i think my heads are my big flaw but im not sure.
stock bottom end
hand ported 853 heads with comp dual springs
234/240 .641/.649 112 cam
fast 102
ported 90mm tb
tsp coated LT 2.5 x pipe stock ti
vararam b2 and bridge
built t56 31 spline main shaft
mcleod rxt clutch
3.90 rear gears
car made 419/399 on a dyno jet
12.5-12.8 afrs under wot
28* timing
looking around at other cam only cars im seeing people make much more power. i think my heads are my big flaw but im not sure.
Melting Slicks
Joined: Nov 2009
Posts: 2,536
Likes: 15
so ive been looking around and i feel like my numbers are kinda low for my mods, heres a list:
stock bottom end
hand ported 853 heads with comp dual springs
234/240 .641/.649 112 cam
fast 102
ported 90mm tb
tsp coated LT 2.5 x pipe stock ti
vararam b2 and bridge
built t56 31 spline main shaft
mcleod rxt clutch
3.90 rear gears
car made 419/399 on a dyno jet
12.5-12.8 afrs under wot
28* timing
looking around at other cam only cars im seeing people make much more power. i think my heads are my big flaw but im not sure.
stock bottom end
hand ported 853 heads with comp dual springs
234/240 .641/.649 112 cam
fast 102
ported 90mm tb
tsp coated LT 2.5 x pipe stock ti
vararam b2 and bridge
built t56 31 spline main shaft
mcleod rxt clutch
3.90 rear gears
car made 419/399 on a dyno jet
12.5-12.8 afrs under wot
28* timing
looking around at other cam only cars im seeing people make much more power. i think my heads are my big flaw but im not sure.
Its really not that far off......most true "cam only" street car LS1's make 420-440rwhp. Depending on the supporting mods.
Your gear does not help your dyno numbers and you total timing seems low, if your talking the true total and not peak tq.
There is more power on the table but the deeper down the rabbit hole you go (N/A) the more it will effect the overall streetability or DD manners.
You didn't mention what the cam centerlines where ground on but....just running rough numbers, it puts your IVC in the 48* range. Meaning, that thing should like to rev.....and imo thats a mismatch with your valvetrain and head setup., if thats even the case.
A dyno graph would help understand the power. Not so much the numbers but more the shape of the curve and where it comes in and falls off.
Good luck with your combo.....
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Thread Starter
Instructor
Joined: Oct 2007
Posts: 108
Likes: 0
From: jax fl
ill see if can grab a copy of my dyno sheet, ive had the cam in the car for sometime now and i dont remember where my cam card ran off to. i want to say hp began to fall around 6500 rpm.
Melting Slicks
Joined: Nov 2009
Posts: 2,536
Likes: 15
All parts are not created equal.....
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Instructor
Joined: Dec 2011
Posts: 188
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From: Fredonia Wisconsin
Also that intake can feed another hundred more horsepower. Usually LS6 will feed to 430 range and Fast 92 is good to around 465.
