More budget SBC stuff

[F-BIRD'88]

If 70 mph cruzin a, a low rpm is a priority and you have a choice consider using the 5 speed manual trans from a 80-90 Camaro, firebird (T5)

[1980Buick]

According to all the calcs 28" tire and 3:1 should put me at 2500rpm ish at 70 with a 1:1 trans. Just where I want to be I think.

[GARY C]

I guess I'll throw more info out. I have some long stretches of 70mph freeway around me so that is why I am choosing to swap to 3:1 gears. I want to be able to drive the thing around.

The 350 is a good running engine and dirt cheap. The 283 has been sitting since '05 so I am not exactly sure how it's held up. It sat with out dist and carb but I tried my best to seal it off.

As for transmission I have everything needed to run a Saginaw or Muncie 4 speed in the truck now. I also have another buddy offering a used th350 for $50. I would need cooler, shifter, converter if I went that route though so I am unsure of which way to go.

I was looking at either Flotek or Promaxx heads. Both have a 180cc offering.

I just want a cam that will allow the motor to do it's best with the 3:1 gears. Don't really care if it chops or not.

Also truck is manual steering and brakes so no real vacuum concerns either.

I did a 350 with about 10.2 to 10.4 compression and an iron 170 cc head similar to the EQ IMCA head with a comp 262 hyd flat and 1.65 rocker for an elcamino with a 2.73 gear and 28" tire,it idled around 650/700 and pulled 16" vacuum with a good timing curve and had a little over 200psi cranking psi. Very nice cruiser with more than enough power.

I thought about running the 256 cam but I think the cylinder psi would have been to high plus the 262 gave me more lift.

[JodyB]

For F-BIRD'88

[F-BIRD'88]

For F-BIRD'88

Ha ha. Now we're talkin'. !!!

[F-BIRD'88]

All that needs now is 2x4's on a dual carb adapter.
Gives you a reason for a hood scoop too.

[midnightbluS10]

For F-BIRD'88

See! He wants $3k for that one!


How well does that thing actually work? I'm assuming it works much better than I was thinking if someone actually used one.

[JodyB]

Those were just fun pics i saved from the web. On a serious note, dashman.net has all kinds of spacers for common weiand tunnel rams.



I'm going to side with fbird for a moment. Starting with the usual ho-hum street 6000 shift sbc, 2800 stall, tall gears, 3800lbs. A total induction length of 25 -36 inches with 2 4bbls might make the perfect street intake for the highest average power.

[JodyB]

Anyone with a good calculator? What is the proper tuned induction length for a 3200 rpm tq peak and a 5500rpm hp peak?

[GARY C]

Anyone with a good calculator? What is the proper tuned induction length for a 3200 rpm tq peak and a 5500rpm hp peak?

Length alone would only tell you the length, most testing shows that cross section and shape are more important and can either help or hurt even though the length remains the same... They all work together.

[econo racer]

I would buy a set of new vortecs and performer style intake and a small summit hydraulic cam. Something around 216 deg at 50deg. and about 450 lift. Make it simple and fun. IMO. If you have spare cash I would use a comp cam instead, maybe more HP there.

[rfoll]

If you are not going to put slicks on it and launch it at the strip, a Saginaw 4 speed should survive ok. They were available with a very low first gear to help with the 2.56/2.73 rear gears they installed in cars in the late 70s and 80s.

[PRH]

I’d go with the 350 over the 283.

I like the Vortec head idea, but in reality I’d probably use whatever small runner heads I could get cheap.
Performer EPS intake, something like a Comp 268H or XE262.

[77cruiser]

Anyone with a good calculator? What is the proper tuned induction length for a 3200 rpm tq peak and a 5500rpm hp peak?

Pipemax

[JodyB]

I'm gonna side with 88firebird here. If the usual hotrodder compromised formula of 2800 stall, 6000 shift, and at best a 3.73 gear at 3500lbs, then the best compromised carb intake manifold has not been marketed yet. With some r&d, a 2 4bbl long runner intake targeting the highest average in the 2800-6000 range would CRUSH evey dual plane on the market.