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DRR Elite
Picture of 1320racer
posted
since Tracy Dennis announced the "game changer" SR20 heads. So what's the latest and greatest using these 20 degree heads, who has what, how many cubes, built by who, making how much HP and running what in a pipe rack at what weight?


O'IT!

Offering 1st hand experience and advice based on 3 decades of on track proven performance

"if you guys are so broke dyck you can't buy USA made parts you need to stay the fuc at home that's the bottomline" ----Tim McAmis



 
Posts: 12069 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Trophy
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If I had to, I would call par or sdpc. Par engines seem to be fast, but Britt Cummings has one from sdpc I believe that runs in the 450 range which is about as fast as I would want to go.
 
Posts: 62 | Location: Glen Burnie | Registered: May 30, 2011Reply With QuoteReport This Post
DRR Sportsman
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PAR has their own 20 degree port they are putting in bare castings that seem to do better than the sr20 head. they call it elite 20. he sells a lot of them for what it is worth. he builds a lot of 598 20*.

ep-Duggins has worked as hard as anybody on improving the 20 degree stuff
 
Posts: 660 | Location: dodging double wides... | Registered: November 28, 2007Reply With QuoteReport This Post
DRR Sportsman
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I have a couple friends running 4.30's at 157ish both with 615's


"I am not ashamed to confess I am ignorant of what I do not know."
Marcus Tullius Cicero
 
Posts: 862 | Location: Las Vegas, NV | Registered: April 14, 2004Reply With QuoteReport This Post
DRR Pro
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The 615 short deck is Probably PAR’s biggest seller...I like um a little bigger...
 
Posts: 1085 | Location: USA | Registered: December 04, 2008Reply With QuoteReport This Post
DRR Elite
Picture of 1320racer
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How much bigger and why do you like the 20 degree over the 9 degree?


O'IT!

Offering 1st hand experience and advice based on 3 decades of on track proven performance

"if you guys are so broke dyck you can't buy USA made parts you need to stay the fuc at home that's the bottomline" ----Tim McAmis



 
Posts: 12069 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Pro
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9 degree is a great motor but you just can’t beat the 20 stuff out there now....if weight wasn’t a issue the 9 would eat the 20 up but it doesn’t not much faster at all an considerably more expensive....but the main reason I would highly recommend the 20 is parts are readily available at the track....nobody has a 9 degree let alone parts....
 
Posts: 1085 | Location: USA | Registered: December 04, 2008Reply With QuoteReport This Post



DRR Pro
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But if you went 9 degree I would go the X BLOCK route now it is very impressive
 
Posts: 1085 | Location: USA | Registered: December 04, 2008Reply With QuoteReport This Post
DRR Trophy
Picture of TheBlueTruck
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I've seen some pretty nice variations of the 20's at Rick's shop. You know what SR stands for. Also RIP Mr Dennis. He was a good guy.


Regan Wilson Super Street 469C
 
Posts: 236 | Location: Tyler Texas | Registered: February 24, 2011Reply With QuoteReport This Post
DRR Sportsman
Picture of diceman1530
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Par 632 SR20
1975 LB Mullis 4 Link 3197 M/T 4:10
4.49 in decent air not great air cecil county
was best
super consistant


Working for the Weekend!!!!
Fordyce Motorsports
 
Posts: 234 | Location: Williamstown, NJ | Registered: November 20, 2009Reply With QuoteReport This Post
DRR S/Pro
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quote:
Originally posted by 1320racer:
How much bigger and why do you like the 20 degree over the 9 degree?


Sent u a PM
 
Posts: 1942 | Location: Tewksbury, MA,USA | Registered: November 03, 2000Reply With QuoteReport This Post
DRR Top Comp
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If I were doing a 20 degree I would look at Shafiroff’s 20 degree heads. They use standard valve covers and a standard manifold.


Clowns to the left of me, Jokers to the right. Here I am.......
 
Posts: 5152 | Location: stuck in the middle with you! | Registered: March 11, 2002Reply With QuoteReport This Post
DRR Elite
Picture of 1320racer
posted Hide Post
Vern, Shafiroff always has the best advertised prices but when you compare apples to apples the real costs of his engines is within a few dollars of his competitors. That said, you don't see many of his engines in use in division 1.

quote:
Originally posted by TOP38:
Sent u a PM

you got mail


O'IT!

Offering 1st hand experience and advice based on 3 decades of on track proven performance

"if you guys are so broke dyck you can't buy USA made parts you need to stay the fuc at home that's the bottomline" ----Tim McAmis



 
Posts: 12069 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Sportsman
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622 PAR in a 1800 pound Racetech. For comparison, was dialed .38 the week you were at 42 for the ACE race.
 
Posts: 133 | Location: Left of Center | Registered: February 08, 2007Reply With QuoteReport This Post



DRR Elite
Picture of 1320racer
posted Hide Post


O'IT!

Offering 1st hand experience and advice based on 3 decades of on track proven performance

"if you guys are so broke dyck you can't buy USA made parts you need to stay the fuc at home that's the bottomline" ----Tim McAmis



 
Posts: 12069 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Elite
Picture of 1320racer
posted Hide Post
quote:
Originally posted by WHOMPWHOMP:
9 degree is a great motor but you just can’t beat the 20 stuff out there now....if weight wasn’t a issue the 9 would eat the 20 up but it doesn’t not much faster at all an considerably more expensive....but the main reason I would highly recommend the 20 is parts are readily available at the track....nobody has a 9 degree let alone parts....

The concession for using the 9 degree heads is about 30 lbs. but they are at least 60HP better depending on who's port in the head and whether you run conventional, 20 degree, 9, 11, 12, 14 degree spread ports, you should have spare rockers, pushrods and valve springs.

I'm not familiar with the X block.

quote:
Originally posted by TheBlueTruck:
I've seen some pretty nice variations of the 20's at Rick's shop.

Rick has an 18 degree "conventional" head.


O'IT!

Offering 1st hand experience and advice based on 3 decades of on track proven performance

"if you guys are so broke dyck you can't buy USA made parts you need to stay the fuc at home that's the bottomline" ----Tim McAmis



 
Posts: 12069 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Pro
posted Hide Post
I ran the shyt out of mine at the DRR at HUNTSVILLE....I broke a couple of the offset rockers but only after about 300 runs...other than that no problems...but I did start breaking the shyt out ring an pinions while running it which seemed strange..
 
Posts: 1085 | Location: USA | Registered: December 04, 2008Reply With QuoteReport This Post
DRR Elite
Picture of 1320racer
posted Hide Post
how big is your 20 degree engine, how much HP doers it make and what ET/MPH does it run at what weight and on what fuel?

As far as I know, KB had the quickest/fastest 20 degree engine in dragster in the country running 6.60s @ 198 and has also ran 190 in Super Comp BUT it is no 615 or even a 632 and his car is very light. I'm told that this engine is now in Cameron Manual's car.


O'IT!

Offering 1st hand experience and advice based on 3 decades of on track proven performance

"if you guys are so broke dyck you can't buy USA made parts you need to stay the fuc at home that's the bottomline" ----Tim McAmis



 
Posts: 12069 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Pro
posted Hide Post
X14 fuel...1895lb. mine is a 638... been 4.32...making some changes to it now...camshafts have came along way since these heads started out.....an yes Manuel did buy it....KB going back to the popular 615’ as far as I know as of now....he runs the shyt out of stuff like myself...
 
Posts: 1085 | Location: USA | Registered: December 04, 2008Reply With QuoteReport This Post
DRR Pro
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KB as driven my stuff an will pick up .08 min with him...
 
Posts: 1085 | Location: USA | Registered: December 04, 2008Reply With QuoteReport This Post
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