I went to the track yesterday and it was miserable. Decided to test the new intake and converter. The 1st run was a 12.02 with a Speed Demon 750 that had a big sag (needs a little fine tuning) and it ran 111mph, so in 90 degree heat I was happy with that. 2nd run I put my 850 Mighty Demon on but with stock jetting and it slowed down from the last time out and you could feel it was lean in the burnout box. Went back to the pits and jetted to the same as the last run late last year went up and the car clicked a 11.78@112.5 so with the DA being around 3000ft that made me real happy. It shows that in better weather the car should be in the 11.50's. 4th run I put a 1 to 1 linkage on the car and despite it going slower it was because the car would not hook everything coming on so fast. My son was there watching and said the car pulled the wheels twice so everything was good. We had a small bunch of cars in my class so I got a by run then we went into the finals where I had to race a 69 Hurst Olds 455. He got the jump but I was reeling him in then I realized he might break out so I dive bombed the brakes and sure enough he did. I got the win we shook hands and went on out way. The 8" converter works perfect and the car now will go all the way to 1320ft. and does not crap out at 1000ft. like it did with the 10" Jeg's converter. I was not impressed with the Weiand Street Warrior intake so that's off and I have my modified peanut port matched Holley Strip Dominator on there now. It is really responsive and I am going out Wed. if it does not rain to test again. After that the engine comes out and a nice set of 215 CC heads, new cam along with some 2"super comps are going on in a few weeks.
Peanut Port 461 goes 11.70's
- Thread starter 1980RS
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jeff swisher
Veteran Member
Very nice and good story and testing.
Just for grins do you want to post the cam specs?
is it still this..561 lift both sides and 236°@.050 on a 110LCA.
I want to see the 274 crower in there
Just for grins do you want to post the cam specs?
is it still this..561 lift both sides and 236°@.050 on a 110LCA.
I want to see the 274 crower in there
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Yup that's the specs on the CC 282S. It's a pretty good cam but back in the 90's when I put the 274 FDP Crower cam in the car was much stronger. I may go out tomorrow or this weekend to test the Strip Dominator after that I will pull the engine and go with the next set of parts to see if the closed chambered heads go better than the Ported Peanut Port heads. I do have 2 of the Summit cams that Vortecpro ran but I may save them until later to test. Just pulled the 358 out today for it's rebuild and a nice roller cam setup to see if I can get that pump gas engine in the 10's.
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jeff swisher
Veteran Member
The early closing intake on the 274 helped that weezie 7.9 compression.
Yea I just assume it is earlier closing being on a 105LSA even though it has more duration.
We have the crane master at the cam shop the 110921 and the next one up from that in Crane
the 252-260
https://www.summitracing.com/parts/crn-110921
I have been thinking about that lobe on a BBC.
244-252 @ .050 with .518" and .536" lift with 1.5 rockers.
I was thinking use the exhaust lobe only because I like single patterns most of the time because my exhaust side is much better than the intake side on ported old iron.
So I would get .607" lift and I think the 252 @ .050 would also gain a few numbers @ .050 like about 4.
Just things I think about.
I think there is the roller 288 and 294 masters also
Thinking about this stuff for an 11:1 433"
Yea I just assume it is earlier closing being on a 105LSA even though it has more duration.
We have the crane master at the cam shop the 110921 and the next one up from that in Crane
the 252-260
https://www.summitracing.com/parts/crn-110921
I have been thinking about that lobe on a BBC.
244-252 @ .050 with .518" and .536" lift with 1.5 rockers.
I was thinking use the exhaust lobe only because I like single patterns most of the time because my exhaust side is much better than the intake side on ported old iron.
So I would get .607" lift and I think the 252 @ .050 would also gain a few numbers @ .050 like about 4.
Just things I think about.
I think there is the roller 288 and 294 masters also
Thinking about this stuff for an 11:1 433"
If you are looking at the Crane cam take a look at the Elgin 1090P cam, it makes power. I have used in lots of SB combos with great success and the Elgin line of cams for the money has never let me down. The 1090 is .537I .557E duration is 256°I and 264°E in a 106° LCA. you can use up to 1.6 rockers and the cam favors the exhaust side very well. With your 11.0 to 1 compression it will work, my last run with it in the 358 went 11.46@117mph and an 1/8 mile of 7.24 so I am sold on that one. I am betting when I make the big top end switch on the 461 the 274 cam will shine, just hope I get some ET with it.
UPDATE: I just got back for the fun day. Got 2 runs in before it rained, car went 11.86@110 with the new intake and a 1" open spacer, switched to a 1" 4 hole spacer and dropped 3 jets front and rear car went 11.68@113, seems the single plane intake that I did does not require as much fuel as the dual plane. I will tear the car apart and pull the engine for the new mods, might pop for some new rings as long as the pan will be off.
jeff swisher
Veteran Member
Very nice.
Here is something my Uncle did when racing against Richard Petty and others when I was in Diapers.
During a tear down for a slight freshen up like you spoke of he would clean the oil rings and move the top ring to the second groove and stick a new top ring in only.
That way he had a molly faced ring for second groove and top groove.
Fresh compression ring and basically a low drag oil ring.
This is when Stock Car was Stock Car.
I did just that on a 350" I had.
245 PSI cranking pressure and ran excellent.
He also told me some RV engines he tore apart had Double Molly rings in them.
Makes you think.
I do not know what bevel they had back then or if it mattered.
Maybe oil today will not like the double Molly.
When I did it was 1992 and I was running Havoline 10-40 standard bore and NO HONE.
Many times I have kept the old oil ring just cleaned them up if they looked good I kept running them if the car did not have an oil consumption issue.
Then replace compression rings only.
You probably have a plan already in place.
Here is something my Uncle did when racing against Richard Petty and others when I was in Diapers.
During a tear down for a slight freshen up like you spoke of he would clean the oil rings and move the top ring to the second groove and stick a new top ring in only.
That way he had a molly faced ring for second groove and top groove.
Fresh compression ring and basically a low drag oil ring.
This is when Stock Car was Stock Car.
I did just that on a 350" I had.
245 PSI cranking pressure and ran excellent.
He also told me some RV engines he tore apart had Double Molly rings in them.
Makes you think.
I do not know what bevel they had back then or if it mattered.
Maybe oil today will not like the double Molly.
When I did it was 1992 and I was running Havoline 10-40 standard bore and NO HONE.
Many times I have kept the old oil ring just cleaned them up if they looked good I kept running them if the car did not have an oil consumption issue.
Then replace compression rings only.
You probably have a plan already in place.
Interesting, thanks for sharing your results.
Looks like the engine did not need the extra plenum volume and longer runner lengths that the 1" open spacer gave you, and you had better booster signal with the 1" 4 hole.
Do you work with, or use any type of intake floor pucks "turtles" at all?
I have not used any in the past. I do know they help the manifolds with a flat floor and that's where the reversion problems happen especially with a small carb. When I put the 215's on with the Crower cam I am going to use the Air Gap first. It worked very well in the past although would have liked to see a little more top end with the modified Holley SD. I pulled the plugs today and they are really dark so now I know that I can lean it out more with the rough finish I put inside the intake. Will have to wait until I try the 360 PP heads someday.
Never thought of using an old moly ring on the second groove, may have to try that one. I have used the total seal rings with good luck but they are really aggressive on cyl walls so I stopped using them. The only bad thing about oil in the combustion chamber is detonation.
