We are currently running on the new domain and server: www.Speed-Talk.com

IMPORTANT: Update your bookmarks to https://www.speed-talk.com/forum/
(Right-click the URL and select "Bookmark this link")

Search found 24 matches

by 1980RS
Sat Jan 18, 2020 4:29 pm
Forum: Engine Tech
Topic: King versus clevite
Replies: 29
Views: 1231

Re: King versus clevite

Used King bearings for the 1st time last year in my BBC. After the first race started to see silvery flakes in the heads where the drain back is. The clearances were good and in all 3 times I have replaced bearings in that big block, never have I seen this, will have to go through it again. Won't u...
by 1980RS
Fri Jan 17, 2020 7:59 pm
Forum: Engine Tech
Topic: King versus clevite
Replies: 29
Views: 1231

Re: King versus clevite

Used King bearings for the 1st time last year in my BBC. After the first race started to see silvery flakes in the heads where the drain back is. The clearances were good and in all 3 times I have replaced bearings in that big block, never have I seen this, will have to go through it again. Won't us...
by 1980RS
Wed Jan 15, 2020 9:13 pm
Forum: Engine Tech
Topic: Valve lap on boosted high mileage 5.3?
Replies: 17
Views: 1798

Re: Valve lap on boosted high mileage 5.3?

I had a set of SBC 5.7 Vortec heads I am using for a 406 project that had only 40K on them and the seats and valves were really pitted on the exhaust side, not so much on the intakes so you cannot count on having great looking seats and valves with a ton of miles on them. I cannot believe the 5.3's ...
by 1980RS
Tue Jan 14, 2020 7:48 pm
Forum: Engine Tech
Topic: 1978 454 solid cam, all street..
Replies: 47
Views: 1603

Re: 1978 454 solid cam, all street..

We used to buy the 6209 Marine cams from Ligenfelder as take outs for like $25, bought a ton of them and sold all of them but one, which I still have today. It is on a 116.5° LCA and will pull 7K with the right springs. I sold a 6209 to buddy that put it in his 76 3/4 ton Pick up. He called and said...
by 1980RS
Mon Jan 13, 2020 5:35 pm
Forum: Engine Tech
Topic: 4150 4778 Holley carb questions
Replies: 12
Views: 526

Re: 4150 4778 Holley carb questions

Figure the 4778 700 like the 750 Dominator the difference is the bell shape boosters, easy to change on a Dominator but not on a 4150. Just get one of the Holley 750 HP bodies and swap everything over and have a really good carburetor.
by 1980RS
Sat Jan 11, 2020 1:38 am
Forum: Engine Tech
Topic: 1978 454 solid cam, all street..
Replies: 47
Views: 1603

Re: 1978 454 solid cam, all street..

I mis-stated the lift number it is .561, I had 4.10 gear in my car. The 270S comp cam is really nice on the street also if you like a nice solid cam that is not hard on parts. Best was 11.78@112mph, not a lot of HP but a whole lot of torque but was happy considering it was peanut port heads.
by 1980RS
Fri Jan 10, 2020 6:45 pm
Forum: Engine Tech
Topic: Any HP test with Spintec mufflers?
Replies: 5
Views: 545

Re: Any HP test with Spintec mufflers?

A guy in Wisc. where i race has Spintec's on a 70 Chevelle with a 540. Darn thing is so quiet you can't hear it going down the track. Seen that car run 9.90's in the past.
by 1980RS
Fri Jan 10, 2020 6:42 pm
Forum: Engine Tech
Topic: 1978 454 solid cam, all street..
Replies: 47
Views: 1603

Re: 1978 454 solid cam, all street..

Comp Cams BBC 282S
.651 lift
236° Duration @ .050
110°LCA
Great street cam, ran high 11's in my Camaro with 7.9 comp and 236 Peanut Port heads.
by 1980RS
Fri Dec 27, 2019 3:22 pm
Forum: Engine Tech
Topic: Manifold Dyno Test
Replies: 53
Views: 4861

Re: Manifold Dyno Test

Joe was one of my hero's when I grew up in the 70's and 80's. I still re-read the one when he built that late style Nova. Joe went from 13's to like 9's with that car. Joe knew how to make power from less. I still remember his one line in a Hot Rod magazine, "Aftermarket parts are for people who can...
by 1980RS
Fri Dec 27, 2019 3:11 pm
Forum: Engine Tech
Topic: Intake manifold advice for VORTEC style....
Replies: 32
Views: 705

Re: Intake manifold advice for VORTEC style....

I have a 406 that I will be using to test 3 sets of Vortec heads on this year. 1st. will be bone stock Vortec heads with and dual plane, 2nd will be a mild ported set that flowed real well with the dual plane, then a ported Super Victor. 3rd, a set of the earlier 206 large port Vortec heads with som...
by 1980RS
Thu Dec 19, 2019 7:52 pm
Forum: Engine Tech
Topic: SBC 350+.060
Replies: 13
Views: 1267

Re: SBC 350+.060

Never had much faith in 292 Turbo heads when I ran them, switched over to Bowtie heads that we ported, my car picked right up. Just like everything else, another head comes along to take it's place for more performance.
by 1980RS
Sat Dec 14, 2019 12:00 am
Forum: Engine Tech
Topic: vortec 062 drop-in hydraulic roller valve springs
Replies: 17
Views: 2146

Re: vortec 062 drop-in hydraulic roller valve springs

I ran the LT4 hot cam springs in my street car with Vortec heads. Would pull to 6500 pretty easy. If the spring pocket does not have the lip in that area of the spring pad those springs will drop right in, at least they did on my heads.
by 1980RS
Fri Dec 13, 2019 11:57 pm
Forum: Engine Tech
Topic: How good will L-29 heads be over Close Chambered BBC heads
Replies: 5
Views: 415

Re: How good will L-29 heads be over Close Chambered BBC heads

As the one cyl head porter here in town said "get rid of the swirl hump, you're racing not driving around town", he must know what he's doing as he has made some of the best flowing LS heads and take the swirl ramps out of them and his head perform very well. My 236 pp head would pull very easy to 6...
by 1980RS
Fri Dec 13, 2019 8:21 pm
Forum: Engine Tech
Topic: How good will L-29 heads be over Close Chambered BBC heads
Replies: 5
Views: 415

How good will L-29 heads be over Close Chambered BBC heads

I was running a low compression (7.9 comp) 461 BBC engine for some testing with heads the last few years. The first set were a set of 236 peanut port heads that had some mild porting and stock valve sizes on them. Car ran high 11's, then I switched to a set of 215 closed chambered heads with 2.19 an...
by 1980RS
Fri Dec 13, 2019 8:13 pm
Forum: Engine Tech
Topic: 6.0 p300
Replies: 18
Views: 651

Re: 6.0 p300

Clean the MAF sensor and check the cats on the truck. Watched a few techs struggle with random misfires that last one was for 3 months, the field engineer finally came out and sprayed the MAF and the misfires were gone. The other thing I have seen is non-ac delco spark plus cause misfires also.