how to speed up my pure stock 305 Camaro

[randall502]

I put a 3.42 rear gear and a posi unit

[Dan Fahey]

Originally Posted by randall502

I put a 3.42 rear gear and a posi unit

Add 4.10's

[Chris1529]

I would go with at least a 4:10 or 4:30. With the OD trans, those gears would be fine unless you plans to drive long distances on the street. your 3:42 is not nearly enough gear for the strip.

[Dan Fahey]

Originally Posted by Chris1529

I would go with at least a 4:10 or 4:30. With the OD trans, those gears would be fine unless you plans to drive long distances on the street. your 3:42 is not nearly enough gear for the strip.

On my 95 Impala SS
It uses a 4.10 with 26 inch tall tires for racing.
Change to near 28 inch tall street tires to drive home on.
With the 4L60E tranny get near 20 mpg cruising home.

If you Trailer 4.56 with 28 inch tall slick works.


D

[ALMACK]

^^ Good suggestions so far.

-160 deg. thermostat
- as deep of a rear gear as resonable to cruise on the road with
- minimum weight to fit class
- lots of air pressure in the front tires
- short belt to bypass the power steering (or remove PS altogether)
- aftermarket headers and an x pipe (must run mufflers that are not "see through"

[Terry Witzel]

What e.t.'s are you running now? What horsepower is your motor?

[Ed Wright]

Originally Posted by ALMACK

^^ Good suggestions so far.

-160 deg. thermostat
- as deep of a rear gear as resonable to cruise on the road with
- minimum weight to fit class
- lots of air pressure in the front tires
- short belt to bypass the power steering (or remove PS altogether)
- aftermarket headers and an x pipe (must run mufflers that are not "see through"

Don't think it needs a chip? Many of those have a delay before the ECM goes into Power Enrichment. That is like your Holley power valve not opening for a few seconds.
You can not band aid around that. Also timing it foot braking from a low RPM. Turn the distributor far enough to make them leave like that, and it's over-advanced at higher RPM. You have to change the curve.
Just the washer part of a thermostat would be better than a 160. Do you race your car at 160? Probably not if it has an iron block.

[ALMACK]

Originally Posted by Ed Wright

Don't think it needs a chip? Many of those have a delay before the ECM goes into Power Enrichment. That is like your Holley power valve not opening for a few seconds.
You can not band aid around that. Also timing it foot braking from a low RPM. Turn the distributor far enough to make them leave like that, and it's over-advanced at higher RPM. You have to change the curve.
Just the washer part of a thermostat would be better than a 160. Do you race your car at 160? Probably not if it has an iron block.

160 in the burnout box.
170 when the car is fully staged.
180 at the end of the run.
all on 93 Unleaded

[randall502]

Headers are on the way. Ordered some headman headers and got some flowmasters to go on it.

[randall502]

The car has run a best of 9.72. But other than that one time it runs 9.85s. and it is a 170HP 305