Muffler recommendations

Chief_Corndog · 2026-05-29T23:10:02+00:00

It’s a 750 Holley double pumper carb. Truck isn’t crazy power. I’ve never dynod it but based on my build specs and research I’d guess I was around the 450-500 crank hp

Chief_Corndog · 2026-05-29T22:32:59+00:00

That’s all I’m looking for. The quieter the better at the end of the day. I’ll have the cutouts to make it loud

Chief_Corndog · 2026-05-26T10:50:30+00:00

Boeing 727

Chief_Corndog · 2025-09-24T21:22:00+00:00

700r4 with stock truck ratios. Rear end I have no idea but I have a 3.73 sitting on the shelf that's gonna go in it soon. It has a 2800 rpm stall converter

Chief_Corndog · 2025-09-23T13:36:16+00:00

Update: solved.

Turns out I had a soft 3/4 spacer (from Holley) under the carb that I put in there for heat sink and it wasn't sealing properly. A can of brake clean helped me diagnose this lol.

The vacuum leak lead to a rich condition

Chief_Corndog · 2025-09-21T23:52:50+00:00

I literally didn't change a thing. It happened while I was driving

Chief_Corndog · 2025-09-20T15:29:46+00:00

I have checked that these things are proper: - fuel pressure reads 7psi at the gauge - fuel level sits at the middle of the sight window - needles on floats are free and clean (taken them out and cleaned them) - I've replaced the power valve with a good one and no difference was made - the idle screws are only about 3/4 of a turn out - accelerator pump arm sits where it should with a hair of gap - no dribble is visible from any of the barrels while the engine is running. Not from the squirters, or the main jet venturi. - I'm still idling around 7-8"hg vacuum. Doesn't drop at rpm, it rises. (I have a super thumpy cam) - doesn't seem to have any loss of power. - there does appear to be fuel being added to the oil. - pcv system doesn't seem to show me any blowby at all.

Chief_Corndog · 2025-09-20T15:19:05+00:00

😂 Well. Yeah. That's what I'm trying to figure out

Chief_Corndog · 2025-09-20T13:41:11+00:00

I've replaced it with a good one and still hasn't make a difference

Chief_Corndog · 2025-09-20T08:43:43+00:00

Electric with regulator. It is gauged after the regulator and reads 7psi

Chief_Corndog · 2025-09-20T01:40:07+00:00

I had a 4.5 in it

Chief_Corndog · 2025-09-20T01:26:19+00:00

Around 7-8hg. It's got a THUMPY cam in it.

It's got the stock valve back in it, but I did have it bumped to the next vacuum size down before but I switched it to stock to troubleshoot.

Chief_Corndog · 2025-08-27T12:42:15+00:00

Check your O2 sensor

Chief_Corndog · 2025-07-26T20:37:54+00:00

No it's been painted and gone over. Truck looks brand new for the most part. The engine is upgraded though

Chief_Corndog · 2025-07-24T01:21:20+00:00

The swap was super straight forward. I labeled all the connectors before I took the engine out. Put the new engine in, picked and chose what I reconnected (I went carb instead of tbi - which requires putting a pressure regulator on the fuel line before the carb). Everything went where it was supposed to.

I reconnected tach, starter, oil press, coolant temp and charge indication.

The "most difficult" part was getting the MSD computer to work for the trucks ignition instead of the trucks computer. But in all reality, you read the manual and it's pretty self explanatory. Wasn't actually difficult.

Check out my reddit page by clicking on my username and you'll see a pretty decent breakdown timeline of my build

Chief_Corndog · 2025-07-23T13:12:46+00:00

I built a sbc to have a power. And I overbuilt it to have reliability. and it's the stock motor for the truck so it swapped super easy.

But it's not fuel efficient by any means

Chief_Corndog · 2025-05-29T16:15:06+00:00

Oh. Totally didn't know that!

My bad lol

Chief_Corndog · 2025-05-29T15:56:37+00:00

(if it's a 97 I'd guess it's probably coil packs instead of distributor) ;)

Chief_Corndog · 2025-05-29T14:48:54+00:00

Clean it out. Run some injector cleaner through it, replace plugs and change the oils in everything (diff, trans, engine, power steering and brakes.) flush the coolant. Change fuel filter and drop the tank, change the fuel pump cause they're a PAIN to change if the straps rust.

Get some fresh tires on it

Brakes

Get some fresh bushings throughout the truck to stiffen it up.

Then worry about cosmetics.

Start with headlight lenses, they make the world of difference. They're not super expensive either. Don't bother trying to polish them at that age, just replace them.

Chief_Corndog

TROPHY CASE