10secondhopeful

Friend of mine doesn't have an account but is curious about the outcome of a race between a LS1/T56 91 Camaro z28 with the following mods

mods:
short throw
k&n intake
moser 12 bolt with 4.10 gears
305/35r18 mt et streets
2" primary headers
prc stage 2.5 5.3L heads
ms4 cam
true duals
11:1 compression
tune
stock suspension, for now

and a 1999 Trans Am with:

1 7/8 LT headers
slp lip/ram air/85mm maf
ls6 intake manifold
PPTB
p&p 243 heads, milled, + springs/rr arms
short throw
ms4 cam
true duals w/cut outs
3.43 gears running 305/35/18 mt drag radials
LCA's, PHR, weld in SFC's
tune

what ya'll think?

C.

Convoy25

iTrader: (3)

what kind of intake does the camaro have?

and he might have pretty bad wheel hop with stock suspension. i had bad wheel hop on my stock LS1

10secondhopeful

Both have an LS6 intake manifold

C.

InfernalVortex

iTrader: (4)

The third gen will be a lot lighter than the TA most likely. That should be a big nod in his favor.

Thirdgen has no suspension upgrades?

Convoy25

iTrader: (3)

i think with the suspension being stock puts it in favor of the 4th gen

10secondhopeful

No, ran out of money, (story of our lives)

I'm the owner of the 4th gen, I'll have almost 2 years of seat time and he'll only have about a week and half after he gets back, so I have the driver mod advantage, but we're just curious about car vs car, assume the drivers are equal.

Thirdgen89GTA

iTrader: (5)

Head flow, weight, and launch are going to be the determining factors in this race.

I've got some decent trap speed calculators that require the known flywheel HP and race weight.

But really those engines are pretty close depending on the head work.

Example, I can say "ported LT1 heads" for my car. But hey, they flow darn near 290cfm and just over 200cfm on the exhaust with the factory valves. Massive difference between that and a slight clean-up.

I think this one will probably come down to the driver and launch in the 1/4 mile.

paul_huryk

You can pretty much guess that a thirdgen with the exact same drivetrain and engine will be a bit faster than an equivalent 4th gen mostly because of the weight difference, probably 250lbs (maybe over 300) when comparing LS motored cars.

Thirdgen89GTA

iTrader: (5)

Not always true. Some of the 4th gens are as light as 3rd gens. Or is it some of the 3rd gens are as heavy as 4th gens. My GTA isn't a lightweight by any stretch at 3450lbs.

Convoy25

iTrader: (3)

my SS weighs in at 3400

even if there is a weight difference, if the 3rd gen cant hook, or put the power to the ground, it doesn't matter

paul_huryk

Dropping in an all aluminum LSX is worth about 150lbs over the iron SBC, so that is a drop right there.

Since the cars have a very similar suspension setup, with the same parts and tires, both are going to spin (or not).

Convoy25

iTrader: (3)

the 4th gen has some suspension done

UnderCover89TBI

iTrader: (25)

im going 4th gen because of the suspension mods.

86White_T/A305

Wow this is a good match up of a race imo.The 4th gen has the better susp but 3:42 gear.The third gen might slightly lighter with stock susp and a 4:10 gear.The main issue I see is driver error.The 4th gen having a good 2yr seat time is a big factor.Lol how about you 2 switch cars and race eachother and see what comes out of that.Either way..I see this being a damn good race with either car maybe pulling a solid car..maybe 2 depending on how each car launches.From a roll would be interesting to hear.

BlueZee28

iTrader: (30)

The heads on the trans am have a slight advantage over the 5.3 heads on the Camaro, however the 4.10's in the Camaro will help out a lot as opposed to the 3.42 rear in the Trans Am. The MS4's love compression too, so the higher compression (assuming the compression is higher on the Camaro than the Trans Am) will definitely help.

Have either of you weight your cars?

Marc 85Z28

iTrader: (3)

The 91 has 2" header primaries?!

As long as the 91 runs right (which many LS swaps don't) and the driver doesn't completely suck, it should easily win. The Trans Am is heavier and needs more gear.