Don Terrill’s Speed-Talk

On enginge masters it was 454 bb chev 620 hp 580 ft open pipes the twin 2 1/2 robbed 20 hp and 25 ft lbs. but you chuck a extra 100-125 hp would the 3 inch choke it as much ?

I have been chasing some lost dyno hp, on a n/a 725 hp engine 750 on race gas, how much would a twin 3 inch with x pipe with 2 straight threw junk muffler then over the diff and 2 more small mufflers hold it back? , i am going to run it later in the year with pipes droped with collector extensions t...

There are many stock blocks of different brands that are thinner than this brand new! If you do indeed have a split cylinder wall then use a nodular iron or better repair sleeve. A cheap grey iron sleeve will just crack again right at the original crack. Thanks, i will check that out and make sure ...

Well what I do know is that with a factor block that once you sleeve two cylinders in one bank then the deck is going to start walking around on you, but your cylinder coolant leak will be cured. Nice trade off? I think not! Thanks, that is somthing to think about the block, it is a high nickle thi...

Looks like on the major and minor thrust reading you are ok it just between the bores where you lacking I’m running a block right now with one cylinder at .080 between the bores.And that crack about would run at idle is just some guys opponent I’ll bet he has never run a block like that in his life...

Our local rebuilder will not sell a stock 4.080" SBC rebuild. A bad stock tune will sometimes kill one. OTOH, I know several which race every Friday night. It's all in the tune and sometimes just luck. Thank you for your reply, it is a sb mopar early race block and has been running for a 3 yea...

I am sorry you lured me in and I wasted my time and energy to respond! Whatever level of power that it is making it’s likely to fail cylinder wall wise at at some point, and I think others here would agree. Sorry you feel like you wasted your time, but in fact you saying you would not trust it at i...

Your playing with fire!!! At 4,080” ( + .040” over) you would have some wall sections as thin as about .040” it would seem! Even if you hard blocked up to the water pump holes I would not trust the motor to live even at idle! That is from the bore size now it is not getting bored boring again lol, ...

Sonic checked this SB block and he are the numbers,what power would you put threw it as 4 inch stroker 6.125 rod 4.080 bore deal?

Drained it and picked up the couple psi the gague flickers a little but they are close now, thanks for the replys

Boot is right tne is 2 5/8 mech on the cowl and the little one on the log and with 5.5 psi at the cowl and swich the little one to the cowl its shows about 5 psi then the 2 5/8 at the log is 3 psi, i will drain the gauge but i think its pressure drop in the log like Rebelrouser said i did check this...

I have 2 fuel pressure gauges one of the reg to gauge and one small one on the fuel log and i get different readings 3 psi lower at the log and when i swich then around i sill get 3 psi less at the log., which one is correct ? 300 gph pump 1/2 lines return style reg

Very nice work and great gains as allways,May i ask you 2 questions. What cam lift do you consider going from 45 to 50 seat? And the benefit of a port that does not back up even though you are only lifting say 750? Thanks in advance.

The flow numbers on the ported head dropped off at those lift points you posted about because the port velocity is now less at those lift points then what it was stock . There are so many other things to be considered that need to get factored in here that I don't know where to start, but I will sa...

Geoff2 wrote: ↑Fri Sep 03, 2021 1:23 am Might help if we knew which engine, which heads?

Geoff It was sbm in the states, early w head or b1 ba head 420 ci 4 inch stroker 4.060 bore 700 lift 7500 rpm deal .