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Search found 101 matches

by fastblackracing
Fri Nov 20, 2020 11:55 pm
Forum: Engine Tech
Topic: duration @ .050"/ .200"
Replies: 29
Views: 2177

Re: duration @ .050"/ .200"

frnkeore wrote: Fri Nov 20, 2020 5:32 pm Mike, this is the am that I'm having made.
What does the area represent and how is it figured?
Thx.
by fastblackracing
Wed Nov 11, 2020 2:49 am
Forum: Engine Tech
Topic: How much piston to glass bead
Replies: 19
Views: 4485

Re: How much piston to glass bead

I heard he is still cleaning on these pistons......
by fastblackracing
Mon Aug 24, 2020 6:01 pm
Forum: Engine Tech
Topic: Nitrous Softening
Replies: 7
Views: 403

Re: Nitrous Softening

We have had good results using the NOS mini controler for pulling power at the hit.
% setting, time setting and some pulse frequency adjustment.(Hertz)
Straight forward and not overly complicated.
by fastblackracing
Mon Aug 17, 2020 7:35 pm
Forum: Engine Tech
Topic: 423 SBC combo help
Replies: 85
Views: 2628

Re: 423 SBC combo help

What is the rpm drop on the gear changes?...normaly the converter would look like on the 2-3 gear change where the rpm should drop back say 800 rpm and work its way back up.....
If its blowing through you will see very little rpm climb in high gear.
by fastblackracing
Mon Aug 17, 2020 5:44 pm
Forum: Engine Tech
Topic: LS cam/lifter failure
Replies: 10
Views: 516

Re: LS cam/lifter failure

Lifters were GM ls7 New with this cam, and valve lifter guides? I assume you are meaning valve guides? No.. valve lifter guides or AKA valve lifter trays. You might check out these two youtube videos on LS. https://www.youtube.com/watch?v=8CzhCryAjLM https://www.youtube.com/watch?v=cIq2xxu79NA Of c...
by fastblackracing
Mon Aug 17, 2020 5:42 pm
Forum: Engine Tech
Topic: LS cam/lifter failure
Replies: 10
Views: 516

Re: LS cam/lifter failure

Pics of the can lobe corrugation and engine compartment. Last camshaft I bought from Lunati looked like this as well. (Cam was for gen 1 sbc) I did not like it at all. And I am pretty sure if that cam would’ve made it into a engine. The lifters wouldn’t have lasted long ! Thanks, that is pretty muc...
by fastblackracing
Mon Aug 17, 2020 4:39 pm
Forum: Engine Tech
Topic: LS cam/lifter failure
Replies: 10
Views: 516

Re: LS cam/lifter failure

Pics of the can lobe corrugation and engine compartment.
by fastblackracing
Mon Aug 17, 2020 1:39 pm
Forum: Engine Tech
Topic: LS cam/lifter failure
Replies: 10
Views: 516

Re: LS cam/lifter failure

Were the valve lifter guides OEM GM or aftermarket? Were the lifters OEM GM LS7 or aftermarket? I stopped buying any cams that are made by comp years ago after several failures. Me to. Same with with their lifters. Lifters were GM ls7 New with this cam, and valve lifter guides? I assume you are mea...
by fastblackracing
Sun Aug 16, 2020 9:46 pm
Forum: Engine Tech
Topic: LS cam/lifter failure
Replies: 10
Views: 516

LS cam/lifter failure

My son and myself help out a few of our friends with their cars from time to time and this one Is a 98 Trans-Am with a 408 inch LS. We had just got done Installing the nittrous set up a few weeks ago and they went out and started making some nitrous hits to get the system set up and timing A/F ratio...
by fastblackracing
Thu Jul 04, 2019 10:36 pm
Forum: Engine Tech
Topic: Valve seat width for cooling and reliability
Replies: 25
Views: 1795

Re: Valve seat width for cooling and reliability

Have had good results with .080"-.090" on 1.6" stainless valve v6 turbo application..... 30+psi boost at times. Should maybe have a better valve material but have not had any issues with the stainless. 150HP per cylinder. Street/strip application. That's making some steam! How long is at max boost ...
by fastblackracing
Thu Jul 04, 2019 7:14 pm
Forum: Engine Tech
Topic: Valve seat width for cooling and reliability
Replies: 25
Views: 1795

Re: Valve seat width for cooling and reliability

Have had good results with .080"-.090" on 1.6" stainless valve v6 turbo application.....
30+psi boost at times. Should maybe have a better valve material but have not had
any issues with the stainless. 150HP per cylinder.

Street/strip application.
by fastblackracing
Tue May 28, 2019 11:07 am
Forum: Engine Tech
Topic: Camming past flow peak
Replies: 49
Views: 3115

Re: Camming past flow peak

Another relevant factor is that max piston speed/air demand is ~78° ATDC, but peak lift is likely ~ 106°, when the piston has been slowing down for almost 30°. I have read on several occasions that there is a time lag on the order of 15-20 crankshaft degrees, that applies to the pulling action on t...
by fastblackracing
Mon May 13, 2019 8:00 pm
Forum: Engine Tech
Topic: Bang for the buck...goodwrench 350
Replies: 70
Views: 5463

Re: Bang for the buck...goodwrench 350

Gears 3.73, Heads,headers, 1.6 intake rockers, cam in that order for biggest results.....although i understand the cam being cheaper and easier to do than the heads..... If you do the cam try to get something with a really tight lobe center angle, I think the factory cam was on a 112 IIRC, and of co...
by fastblackracing
Mon May 06, 2019 1:55 am
Forum: Engine Tech
Topic: C16 storage life after opening
Replies: 4
Views: 417

Re: C16 storage life after opening

I have (had) a drum I just traded to a friend for his time to do my yard work for the summer. Drum was new 4 years ago and 15 gallons used. The missing 15 was replaced and he is currently using it and just today went his best ET and MPH by good bit over the E85 he had been running. The drum was seal...
by fastblackracing
Mon May 06, 2019 1:08 am
Forum: Engine Tech
Topic: Racepac graph
Replies: 17
Views: 1265

Re: Racepac graph

Very interesting breaking the graphs down.... What trans and converter, Tire and air pressure, shocks and spring setup? Also what is the third trace, and do you have a g-meter? How many magnets on the shaft? There is a slight drop at first which can be clutch slip or a shift timing issue in the tran...