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Search found 763 matches

by tenxal
Wed Jan 13, 2021 8:59 am
Forum: Engine Tech
Topic: 427 Build And Drag Test
Replies: 30
Views: 1323

Re: 427 Build And Drag Test

Yes, right now my air T has a ring on it for testing 4150 carbs. I don't bother to set the date on my dyno, it has a default setting. Maybe I can take a picture of my Turbine setup and post. Hers a picture you can see the ring on the bottom of the turbine. One other thing I'd like to point out to Y...
by tenxal
Tue Jan 12, 2021 8:43 am
Forum: Engine Tech
Topic: 427 Build And Drag Test
Replies: 30
Views: 1323

Re: 427 Build And Drag Test

Have you ever run a QJet with your air bonnet on?

The 2006 date on the dyno sheet is interesting.
by tenxal
Fri Jan 08, 2021 7:17 am
Forum: Engine Tech
Topic: Which of these two BBC intake would you run and why
Replies: 4
Views: 439

Re: Which of these two BBC intake would you run and why

Both good choices. The Weiand is such a close copy of the 163 that's it's a coin toss.

I'm doubtful you'd tell any difference.... short of being on a dyno.
by tenxal
Fri Jan 01, 2021 7:19 pm
Forum: Engine Tech
Topic: Piston to Head Clearance Minimum
Replies: 23
Views: 873

Re: Piston to Head Clearance Minimum

I've run as close as .028 with my flat top drag race SBC stuff with no issues to 7300-7400. I'm more comfortable at .030 and anything over .032 is costing you power and torque with the small chamber 461-462-041-291-186 heads. At .034 and more, it's like leaving free money at the table. Assuming stee...
by tenxal
Fri Jan 01, 2021 10:57 am
Forum: Engine Tech
Topic: 327 Build
Replies: 28
Views: 1065

Re: 327 Build

If it was mine, I'd keep the head gasket bore much tighter (think Cometic gaskets :wink: ), stay away from a hydraulic roller cam (use a solid roller with as much lift as the valve reliefs allow) and for sure use the Z28 intake....the L79's are not that great. Really, about the only way to muddy up ...
by tenxal
Sat Dec 26, 2020 9:34 am
Forum: Engine Tech
Topic: 702 heads on a low RPM 496?
Replies: 24
Views: 880

Re: 702 heads on a low RPM 496?

This was a pretty popular deal back in the day when 454's were the engine of choice for race car haulers. And it still works today. The 702 heads on a 454 (or bigger), a decent set of flat top pistons, a nice little hydraulic cam with the Performer intake and a decent carb will give tons of torque a...
by tenxal
Thu Dec 24, 2020 11:36 am
Forum: Engine Tech
Topic: Head gaskets
Replies: 4
Views: 389

Re: Head gaskets

I'd suggested posting a want ad on http://classracer.com/classforum/index.php

There's quite a few 440 Stocker racers on there that run that bore size....pretty helpful bunch of guys.
by tenxal
Mon Dec 21, 2020 11:45 am
Forum: Engine Tech
Topic: HP eaten by fuel pump pushrod?
Replies: 11
Views: 775

Re: HP eaten by fuel pump pushrod?

This was with the engine mounted pumps.
by tenxal
Mon Dec 21, 2020 9:40 am
Forum: Engine Tech
Topic: HP eaten by fuel pump pushrod?
Replies: 11
Views: 775

Re: HP eaten by fuel pump pushrod?

Hopefully one of the stocker guys will post some results :D NHRA Stock Eliminator cars haven't had to use a mechanical fuel pump for many years so I doubt you'll find much in the way of A-B-A dyno results. I've heard from reliable sources of 2-3 hp gains on Cup engines when the mechanical pumps wer...
by tenxal
Fri Dec 18, 2020 8:11 am
Forum: Engine Tech
Topic: Any reason to use those high dollar plug wires...
Replies: 44
Views: 2434

Re: Any reason to use those high dollar plug wires...

FWIW (i.e., nothing), I settled on build-my-own MSD 8.5 mm Super Conductor wires w/ ceramic plug covers where there were issues w/ the plugs being too close to the headers for any other type of boot to survive the heat. Brad, based on what we've seen on the dyno with quite a few engines....the Scot...
by tenxal
Wed Dec 16, 2020 8:14 am
Forum: Engine Tech
Topic: 1967 corvette 327
Replies: 15
Views: 789

Re: 1967 corvette 327

I would carefully check the intake manifold. The aluminum factory SBC intakes can end up 'twisted' over the years.
by tenxal
Tue Dec 15, 2020 6:43 pm
Forum: Engine Tech
Topic: Any reason to use those high dollar plug wires...
Replies: 44
Views: 2434

Re: Any reason to use those high dollar plug wires...

Testing wires on the dyno can be an eye opener. :wink: Anything that you feel comfortable covering in more detail than that teaser? :lol: Honestly, I haven't found any solid, repeatable correlation that points to price, diameter, resistance, etc. as a definite way to pick 'the best' wire. It's some...
by tenxal
Sat Dec 12, 2020 8:24 am
Forum: Engine Tech
Topic: Any reason to use those high dollar plug wires...
Replies: 44
Views: 2434

Re: Any reason to use those high dollar plug wires...

Testing wires on the dyno can be an eye opener. :wink:
by tenxal
Wed Nov 25, 2020 8:26 am
Forum: Engine Tech
Topic: Stock Eliminator secrets?
Replies: 296
Views: 20940

Re: Stock Eliminator secrets?

LSP wrote: Wed Nov 25, 2020 8:18 amAnd larger than OE diameter lifters are out there too.
Oh, yeah..... :wink:
by tenxal
Wed Nov 25, 2020 7:48 am
Forum: Engine Tech
Topic: Stock Eliminator secrets?
Replies: 296
Views: 20940

Re: Stock Eliminator secrets?

One more time........ But an oversize cam core isn't in accordance to the "OEM configuration and size", and nothing in the NHRA Engine Blueprint Specifications says it IS allowed, so why is it ok? I agree completely....it shouldn't be allowed. NHRA's refusal to enforce it's own technical rules has,...