Don Terrill’s Speed-Talk

Ok so now I am looking at the valve springs. They are a pac 1243 240 closed and 560 over the nose. The spring itself is 140 grams with steel retainer and stainless valve. I am not really a fan of the springs and I really cannot tell you why. I like either the comp cams dual conical or the psi 1575 ...

Ok so now I am looking at the valve springs. They are a pac 1243 240 closed and 560 over the nose. The spring itself is 140 grams with steel retainer and stainless valve. I am not really a fan of the springs and I really cannot tell you why. I like either the comp cams dual conical or the psi 1575 ...

1. I don't understand how TEL works to increase octane? At the temperatures found in internal combustion engines, (CH3CH2)4Pb decomposes completely into lead and lead oxides as well as combustible, short-lived ethyl radicals. Lead and lead oxide scavenge radical intermediates in combustion reaction...

Stan if you need a place to host your site I have room on my server. let me know if your interested

Hey I just saw this, yeah we did pretty good at speed week this year. Just a couple miles short of our goal but it’s OK the car shows great stability and efficiency. The record was 334 miles an hour and we pushed it up to 384 miles an hour with an exit speed of 398 miles an hour.The engine was a de...

Thanks guys it was a great team effort now we have to get it together again for our next event at the world finals on Oct 2nd thru the 5th. Gasoline is sure hard on parts I will start another post on that

Hey I just saw this, yeah we did pretty good at speed week this year. Just a couple miles short of our goal but it’s OK the car shows great stability and efficiency. The record was 334 miles an hour and we pushed it up to 384 miles an hour with an exit speed of 398 miles an hour. The engine was a de...

A well balanced and very short stroke sbc dont split at 1000hp. I'd be more worried about cap walk. So fare no cap walk at 9500 2.5" stroke and properly balanced can take alot of rpm. Sounds like a sweet running engine. this is what is sounds like https://www.youtube.com/watch?v=WJCvhoXcPDo

kimosabi wrote: ↑Sat Feb 03, 2018 9:05 am A well balanced and very short stroke sbc dont split at 1000hp. I'd be more worried about cap walk.

So fare no cap walk at 9500

We are making 1000hp with a 4.0 x 2.5 SBC with a single turbo @ about 20psi. hope to end up making 1500hp with 30+ psi What SBC block are you using? I think that I have read where stock SBC blocks tend to split the, "V", at 700 to 750 hp. SBF's about the same? But I don't know at what cub...

We are making 1000hp with a 4.0 x 2.5 SBC with a single turbo @ about 20psi.
hope to end up making 1500hp with 30+ psi

Engine ran well this weekend here is a vid of our fist run of the weekend @257mph
https://www.youtube.com/watch?v=g_r29fT ... e&t=4m46s

then on sunday we set a record

problem solved by upgrading feed line from tank to pump from a -12 to a -16
pump was cavitating

..On another note, if you are flowing 14gpm through that thing, that 4 stage pump isn't helping, especially in the aeriation dept. 6 stage, with 4 in the pan will be waaaaay better if real estate is available, for both performance and longevity! Especially if you're running pan vacuum and presently...

If you are indeed flowing 14gpm (with what I know about your combo it wouldn't surprise me, especially at 100psi) the -16 feed line will Definitely help things. As mentioned, you could probably lower the op to 70-80, but with the extended duty cycle and your power levels, risk vs reward isn't there...