Originally Posted by AndyF
Here is a short video of a customer's car. This is a 505 with pump gas compression, TF270 heads with a ported Indy intake. He is running a 4150 flange Sniper XFlow and a solid roller cam. I think he has the same 264/268 Comp roller that Dwayne designed for my 470 dyno engine. This engine made a little over 700 hp on the dyno. I think peak was 713 or something like that. It has a very lumpy idle. The idle was too radical for a four speed so he had to switch the car over to a 727. It drives pretty well with a high stall converter and it shows a lot of potential at the track. I think it weighs around 4000 lbs so your car might be a bit heavier. I think this car ran high 10's the first time at the track but I'm not sure. He hasn't taken it to the track much so it isn't sorted out yet.
https://youtu.be/fGiFuOuBnvQ


Thanks, I'm totally, completely ok with that level of idle chop- my car is almost as bad right now with the 0.590 solid in it.

https://youtube.com/shorts/0JXBtCaDklA?si=IWh1aJWk2TNNq-HB

we have pump 93 here and any time it gets sprayed I do mix race gas in it for safety, but on motor would like to keep it pump gas friendly. Sounds like bumping the compression up to the ragged edge is not worth the hassle.

Thelma- I am struggling a bit with that decision. If it was in something other than a C body a dry sump makes sense but it would require an oddly shaped custom oil pan to start with and I don't know how much of the subframe can be cut away to put a better shaped oil pan on it. $15k seems to get me a solid 700-ish hp pump gas street motor, that meets my performance goal on spray. I could spend $30k and move to something like the BES B1 heads with custom 2 1/4" headers and make 850+ NA, but I think that is more radical than what I want this car to be on the street, and definitely more than I want or have to spend. It does seem to be a bit of a waste to buy a good block and build such a low output motor but the goal is durability, and if it never spins past 7k I don't think a dry sump really buys me that much.


'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118