Inexpensive 350 Build

[skinny z]

I got some bench racing for you, I think our 5/64 ring 350 is going to runs 10s........

Did these back in 2010- guess it was 240 @ .550"

Carburetor issues notwithstanding and using CP's flow data:
230-240 CFM port with .500-.530" lift cam (XR276HR and rocker ratio dependant). Potential peak HP 450+. Sound reasonable?
(FTR: I'm more interested in the son's 3rd gen than Dave's 1st gen.)

[vortecpro]

This is how I would look at it, .496 net intake lift @ the valve X .85 = .421 actual lift @ the valve running a hyd roller. My flow @ 28 inches was:

.200 135
.300 185
.400 220
.450 229
.500 238
.620 253 retainer hit the valve guide.
.......
I had 443 HP @ 5800-6200 RPM initial testing. Testing will be done in my Camaro. Not very good power so far, just these L98 heads are horrible, they were a bad choice, My china heads had:

.300 199
.400 240
.500 272

But we wanted a challenge........

[skinny z]

This is how I would look at it, .496 net lift @ the valve X .85 = .421 actual lift @ the valve running hyd roller. My flow was:

.200 135
.300 185
.400 220
.450 229
.500 238
.620 253 retainer hit the valve guide.
.......
I had 443 HP @ 5800-6200 RPM initial testing

And if your(our) previous different thread discussions are anything to go by, I suspect that that 443 HP is going to be held pretty steady as the gears change?
What's it take to run 10's? My 3rd gen Camaro scales at 3600+ (full street trim, 700R4, iron heads, glass hood).

[vortecpro]

I think I have the power to run 10s @ 3200 pounds @ 500 feet elevation, I think there's a few more HP there, just need to find them, then make the carb work with that high vacuum at the hit of the throttle.

[skinny z]

The car is a mid 80s Camaro raced @ 475 feet elevation, dyno tested @ 900 feet elevation. The car has a T350 with 4.56 gears, 9 inch slick, around 3200 pounds race ready.

Quick question with what might appear to be an obvious answer. Two 3rd gen Camaros. Similar weight, engine power and converter. Same slicks.
Car 1 has a TH350 with a 2.52 1st gear and 4.56 rear gears. Combined ratio of 11.49.
Car 2 has a 700R4 with a 3.06 1st gear and 3.73 rear gears. Combined ratio of 11.41.
For comparisons sake, both cars have the same traction coefficient.
Could you expect the 60' times to be the same. How about the first 330'?
Or is the heavier rotating mass of TH700 going to limit acceleration?

[vortecpro]

,
700 trans too much internal weight, converter to heavy wrong case for a foot brake?

[skinny z]

,
700 trans too much internal weight, converter to heavy wrong case for a foot brake?

Probably all of the above.
Thanks.

[vortecpro]

Ready to race.

[skinny z]

That looks familiar! Right down to the engine bay colour (86 Camaro here).
I see stripped of engine driven accessories.
Headers look to Hedman. Any details on the what's after the headers. Collectors? Full exhaust? (Or did you say duals dumped before the axle?)

[vortecpro]

Open headers with extensions, and yes there Hedmans, very simple setup.

[skinny z]

Open headers with extensions, and yes there Hedmans, very simple setup.

Something I will try and duplicate when I'm back racing (long ways to go yet though).
I'll keeping a watch for the results. Best of luck.

[Monza355]

The engine looks great in the car. Such a clean engine bay. Based on how your friends Camaro runs at what i assume is heavier weight I think your goal of a 6 sec 1/8 and 10 sec 1/4 mile et will be well within reach.

Can you tell us what converter you’re using and what stall speed ?
I saw you said 4.56 gears. In what rear end is that ? And is the trans with a 2.52:1 low gear ?

Thanks for keeping us updated and best of luck at the track

[vortecpro]

Thanks guys, Were hoping for a 6 sec run we will see soon, the car is ready. T 350 with a 2.74 low gear, 7.5 rear end with 4.56 gear. Converter is a ATI 8 inch. The engine didn't make much power, but it did carry the power from around 5200--6300 within a few HP, so maybe its alright, the question is and always is, can we show dyno HP at the track, and that's why this was built. I would be great if Larry could come in here after we have the drag strip data and compare it to the dyno data.

[1980RS]

Thanks guys, Were hoping for a 6 sec run we will see soon, the car is ready. T 350 with a 2.74 low gear, 7.5 rear end with 4.56 gear. Converter is a ATI 8 inch. The engine didn't make much power, but it did carry the power from around 5200--6300 within a few HP, so maybe its alright, the question is and always is, can we show dyno HP at the track, and that's why this was built. I would be great if Larry could come in here after we have the drag strip data and compare it to the dyno data.

Humm, I see a couple of good driveline ideas there. Hope it runs well Mark

[EXCELLENCE AUTO]

Time for Temple? Or San Antone?
Looks like the weather is getting really nice down there in the Lone Star State!