My brother's car,... 494 10.75 comp Hydraulic roller unknown specs,.but only pulls 6in vac. 250~270 630ish who knows Stage 2 SE'S ported Spx Davinci dominator 2in headers 3in exhaust HeI timing locked at 38 3800ish stall THIS THING WILL NOT GET OUT OF ITS OWN WAY,....LIKE ALL IT WILL DO KNOCK STREET 295 50s off,....would do good to run 12s,......@#$%^& JUNK!!!!
I would take the timing back to 32-34 max. Have you run a leak down? Was the cam dialed in,I've seen some way off. If that spec of 250/270ish at .050" thats a radical hyd roller for the street.
I had it at 34,...liked 38 better and showed it on the strap,...no idea on the cam,...I didn't install it,..have no paperwork on anything hell I only found out it was a 4/7 swap cam by investigating,... was wired conveniently
Haven't done a leakdown test yet too damn frustrated with it and had to get it out of my shop and sight for a bit
Starting to think it's just the car,...the last engine in it was complete dog also,...won't run at the temp I want,...has absolutely no bottom end,....tries to pull up top but then blows thru the converter because it's got a 342 gear vs the 410 I had the converter speced for,.....all I can think is it's severely retarded cam timing
Sounds like excessive slippage either converter or trans. Is that the same trans and converter as with the last engine?
Fresh Trans and converter,...the Trans is done by a guy that has done several for me now,..but you never know,...almost feels like it's flaring in 3rd but that will have to wait till I can get the power it's missing,.....just called TA and apparently it's a 268/274 ,....with barely over 600lift!??? On a 108lsa,...so it's over cammed for sure,...a grind that makes no sense tbh,....and it may be installed retarded onto of that ,....so I'm guessing I have **** for cyl pressure,......
Yes this motor should be 650 plus hp. Converter may be bad too. Bad cam timing will make a big difference.if that cam timing is at .050" it's too radical for the street. Converter is not compatible for a cam of that size.
Yea that's at .50,...I drove a 259 267 on a 108lsa with 635 lift all over the place,...car ran like it had fuel injection,....but this thing is a dog,...what gets me is it just won't rev,...just sounds lazy
Already went thru the valves,...they were on the loose side as is,...I don't suspect seal issue because I'm getting good pull thru valve cover and little thru the catch can
