New heads or nah?

[B3422w5]

It’s an xcelerator that I’ve had for 25 years and ported it myself. The injectors spray directly onto the intake valves, so the intake isn’t much more than a mount for the throttle body. The engine loved my air-gap, but was told not to run a dual plane by the Ron’s injection guys.

I have been a big excellerator fan forever. Have run them on and off for years. They are a great mild single plane, especially for a stock stroke type deal. But they are too small for a serious stroker.
I will tell you they are hurting your power, along with the headers, significantly.
I recently upgraded in some ways similar to what you are doing.
I swapped from excellerator to Victor junior( 418 stroker) swapped from 15/8 headers to 1 3/4 to 1 7/8 step headers, and swapped from ported eddies to Bloomer heads. Kept the same cam, its little, 260/264 565/565.
I went from 10.70’s to 10.20’s… found a couple of issues with a recent freshen up due to whacked bearings, etc. So it may now go faster due to the issues we found. I expect it will. Street strip car that is 3350 with me, flat hood, etc, etc.
I can’t agree with having to go with an offset head. These Bloomer heads have been track proven by others to support around 700 horsepower. Plenty to do what you have in mind.
I also wouldn’t go to the TTI 1 7/8 headers. They frankly aren’t very good.
Think it was Brian at IMM years ago who proved it, think it was close to 30 horsepower with a different header( believe the other was the headman)
I went kinda crazy and bought my new headers from American racing headers they are stainless and killer. But pricy. But in my opinion, they are so much better than those TTI’s it made sense, and I didn’t want to hack my inner fenders((69 dart) to run the headman’s

 

[33IMP]

It falls flat at 6200 probably because it’s trying to push through those small headers.
Don’t underestimate the effect of bad air. It ran 6.60s/6.70 in Seattle with that awful humidity. My good friends 63 nova runs 6.90 at 2800lbs at the local track and his engine dyno’d around 580 at the builder in Idaho.

Yep! Actual altitude has a big effect, and bad air at altitude is an absolute killer. Run 8500 feet of air, against, say, 1500 feet on wallace calculators..

 

[gumper]

I have been a big excellerator fan forever. Have run them on and off for years. They are a great mild single plane, especially for a stock stroke type deal. But they are too small for a serious stroker.
I will tell you they are hurting your power, along with the headers, significantly.
I recently upgraded in some ways similar to what you are doing.
I swapped from excellerator to Victor junior( 418 stroker) swapped from 15/8 headers to 1 3/4 to 1 7/8 step headers, and swapped from ported eddies to Bloomer heads. Kept the same cam, its little, 260/264 565/565.
I went from 10.70’s to 10.20’s… found a couple of issues with a recent freshen up due to whacked bearings, etc. So it may now go faster due to the issues we found. I expect it will. Street strip car that is 3350 with me, flat hood, etc, etc.
I can’t agree with having to go with an offset head. These Bloomer heads have been track proven by others to support around 700 horsepower. Plenty to do what you have in mind.
I also wouldn’t go to the TTI 1 7/8 headers. They frankly aren’t very good.
Think it was Brian at IMM years ago who proved it, think it was close to 30 horsepower with a different header( believe the other was the headman)
I went kinda crazy and bought my new headers from American racing headers they are stainless and killer. But pricy. But in my opinion, they are so much better than those TTI’s it made sense, and I didn’t want to hack my inner fenders((69 dart) to run the headman’s

I certainly don’t want to hack up my fenders. Can’t bring myself to cutting into a 340 car. Moving the leaf springs was hard enough for me to get over.
I’ll have to look for those other headers. All I can find in tubes bigger than 1 5/8 were the TTIs.

 

[B3422w5]

I certainly don’t want to hack up my fenders. Can’t bring myself to cutting into a 340 car. Moving the leaf springs was hard enough for me to get over.
I’ll have to look for those other headers. All I can find in tubes bigger than 1 5/8 were the TTIs.

TDR8 are 1 7/8

Catalog — Tubular Automotive

These below are the ones I have

MOPAR A-BODY SMALL BLOCK 1968-1976

 

[oldkimmer]

TDR8 are 1 7/8

Catalog — Tubular Automotive

These below are the ones I have

MOPAR A-BODY SMALL BLOCK 1968-1976

Ouch!

 

[gumper]

Those are a chunk of change for sure

 

[B3422w5]

Those are a chunk of change for sure

Those from tubular are pretty nice. Helped a buddy put them on a 72 demon with a stroker with eddies years ago. They make good power.

 

[gumper]

If anyone comes across a set of 1 3/4 or 1 7/8 Abody headers let me know. I can’t bring myself to pay for $2k for a set of headers for a small block. That’ll just push me more toward the Hemi swap.

 

[B3422w5]

If anyone comes across a set of 1 3/4 or 1 7/8 Abody headers let me know. I can’t bring myself to pay for $2k for a set of headers for a small block. That’ll just push me more toward the Hemi swap.

Did you see the 1 7/8 ones I posted the link to from tubular automotive.
They are underchassis and make good power

 

[gumper]

Did you see the 1 7/8 ones I posted the link to from tubular automotive.
They are underchassis and make good power

I did see those, I need to call them for a price quote. Have been sidetracked dealing with my newfound transmission problems.

 

[B3422w5]

I did see those, I need to call them for a price quote. Have been sidetracked dealing with my newfound transmission problems.

They might not be optimal for a street car because they aren’t as high up as Doug’s or TTI’s are.