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Where do you dyno engines up by you?

Well on the topic of simulator programs, does anyone have pipemax they can run my combo through? I’d love to see recommended intake lengths etc but pipemax is not available for a Mac.

Small top is 173 cubic inches. Perfect for a 340. That’s the try1 top same as a Chevy

Do you have the large or small top tr1

So that’s 7 for the long side of runner, what’s the short side measure? Need the average of both. For plenum area the basic rule I’ve seen is at least 50% of engine cubic inch size up to 100%. You can tape the bottom of the plenum up and fill it with water and convert ml to cubic inches. My...

Yes, exactly and from all the sources I’ve seen it’s pretty darn close. Most sheet metal intakes target the third. However low rpm stuff usually can’t get enough length for third so the fourth is used. Do you happen to know the length on a m1 tunnel ram? Also here is another tech source about...

Pretty close because based on those numbers if I’m right about the intake length peak would be 5850, cam would influence it too. But appears to be pretty close. You could always shorten the length by milling the base where the top bolts but then there’s no turning back unlike adding a spacer lol

On a big block I think your head port is about 6 and I bet the tunnel ram is 7.5-7.75? That 12.5 length gives a great 4th harmonic boost 5500-6200 but probably falls off a little early since you never get into the 3rd harmonic 7000-8000 boost.

Supposedly bigger plenum is better with smaller carbs, big carbs small plenum. If it’s too big car will not launch hard or be lazy on gear changes. I have some articles from bill jenkins and they greatly reduced plenum volumes even though they were way over 8000, but the engines were small and...

Hi Tom, nice work. Do you know the plenum volume before total And now? Also what is the runner length on that intake? They may be a bit short for 6500

Your freight wasn’t bad, to just send a hood to the east coast they quoted me $510 or something lol. I have unlimited bumpers and fenders on my car but from like 13 years ago

I cut my crash bars out. I think they were 35 or 40 pounds total

That’s what I have. Called about ordering another hood last week and I about fell over when they said $510 to ship lol.

What year is your duster, I have a bolt on fiberglass six pack hood Im thinking about selling. It’s not tall enough for new combo.

Edit, 10.753 at 125.23

My main concern was that the air fuel on that outside wall would want to continue straight down and cause turbulence. On the upside that extra length would really boost the torque 5000-6000 and help the car accelerate. I guess it’s always an option.

Also had this fabricated top I was working on for more runner length but I don’t like how it will negate line of sight. Think I’m shelving that idea for now.

I’m sure you know on these intakes the top wall curves/pinches down more than the floor. By welding I can match the head port and basically remove that curve and blend it into the top. Hoping that is the right move. I will also have the larger top to try, I measured that street top and it’s...

Apd e85 1.687 throttle bores

Little bit of test fitting

Not yet, after grinding it smooth I have a little more touch up welding to do before machine work. Finally getting there though

Not Tuesday but here’s a tr5 I’m working on

Why does the gasket size matter so much if the bore is only say 4.03-.04? I’ve seen this on other heads too

If you’re interested I’d let them go for what I have in them. Their kinsler throttle bodies I bought to do efi on my tunnel ram. I backed out of that idea and bought apd carbs instead. Otherwise I’ll use them on something someday. I would like to try MFI alky myself. How do you like it?

That tunnel ram is nice, I have two of these that would look good on there lol

Was that cam .623 with 1.5 rockers? Or you had 1.6s?

Not as trick as some of these options, but depending on what your et goals really are take a look at member tvt combo here. 2900 pound amx running a 421. 11:2 to 1 I think on alky with bloomer heads and solid roller. I think he’s running low nines 9.30s? If you could put a set of those heads on...

Btw that carb looks sweet

Wow looking nice, good luck and interested in the results. As far as cam I meant what was the thought process on the regrind from the bigger 250 @ 50 to the regrind 260 @ .50? Was it the bump in compression or just thought it needed more duration. I’m getting my 418 together and I have almost...

Hi, any results with the new version of this engine ? Curious to hear, also curious did bullet recommend the regrind to the 260 duration simply due to compression increase or you wanted even more rpm range? How high do you want to rev it ?