Re: 305 DE stroker?
[Re: topside]
#941600
03/03/11 04:20 AM
03/03/11 04:20 AM
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Joined: Jan 2003
Posts: 27,468
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,468
So Cal
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Quote:
For the TransAm 305" rule, the Mopars ran a 340 block with destroked crank. They didn't run 'em to 10,000 RPM, though. Sorry I don't recall the crank manufacturer. There were some CanAm 305s built too, for the Shadow team; I remember them being painted black (as were the cars), and they may have come from Keith Black like the T/A motors did. They ran fuel injection as opposed to the carbureted T/A setup.
Bob Tarrozzi worked on the Trans Am program, some work for Keith Black on the aluminum Hemi block IIRC, and the Shadow program.
He's done some stuff for Brad Anderson and some motorcycle stuff too.
To the OP, are you sure you aren't thinking about the Westlaked headed 318 Indy motor. I've got pics of those in drag Colt's. Those ran some serious RPM's!
Pic of 69 318 motor. I think for the Indy car. Or does that look like a motor plate for car. Picture is titled P69 which I think is what they called that project with Pete Hutchison:
Westlake headed smallblock Colt:
Article:
Last edited by autoxcuda; 03/03/11 04:26 AM.
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Re: 305 DE stroker?
[Re: jp66charger]
#941602
03/03/11 12:46 PM
03/03/11 12:46 PM
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Joined: Oct 2007
Posts: 4,206
New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,206
New York
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Not quite.
The extra RPM at the same inertial stress level is slightly less than 6%: 8,000 RPM becomes 8,460.
Boffin Emeritus
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Re: 305 DE stroker?
[Re: jp66charger]
#941603
03/03/11 12:53 PM
03/03/11 12:53 PM
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Joined: Feb 2009
Posts: 1,019
Finland
mafo
super stock
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super stock
Joined: Feb 2009
Posts: 1,019
Finland
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Nice looking heads...does anyone have any more info on those Weslakes?
-65 Valiant,420", all motor,2700#, dot tires, 8,42 @ 160,2
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Re: 305 DE stroker?
[Re: mafo]
#941604
03/03/11 01:33 PM
03/03/11 01:33 PM
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Joined: Jan 2010
Posts: 588
Franklin, TN
23T Hemmee
mopar
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mopar
Joined: Jan 2010
Posts: 588
Franklin, TN
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Moldex definitely made most of the cranks for the 305, couldn't remember the stroke but 2.96" sounds about right. NASCAR started the Grand American (Baby Grand) series in the late 60's using the shorter wheelbase 106-111" Camaro's, Mustangs, Cuda's,Darts,etc. The cube limit was 305" probably catering to Ford and GM since they already had 302" engines, but it forced Mopar to downsize the 340 by destroking. I know KB was building engines initially with the early 340 heads which weren't too competitive, but the W-2 heads changed that. Quite possibly, a lot of the short block components were compatible with the Westlake/Trans Am combinations. The series was fairly short-lived though, just never seemed to quite catch on, some of the 305's wound up in some of the last Daytona's and Superbirds as NASCAR kept trying to slow the wing cars down with cube limits and carb restrictors, can't remember who was driving the Mario Rossi built Daytona but it was as fast as the big blocks, seems like it had to run 8000+ though, which was unheard of back in early 70's, don't think it lasted the full race. The Hemi's by contrast were usually not much more than 6400-6600 on the superspeedways, at least not in race trim.
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Re: 305 DE stroker?
[Re: 23T Hemmee]
#941606
03/03/11 02:20 PM
03/03/11 02:20 PM
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Joined: Jan 2003
Posts: 27,468
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,468
So Cal
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Quote:
Moldex definitely made most of the cranks for the 305, couldn't remember the stroke but 2.96" sounds about right. NASCAR started the Grand American (Baby Grand) series in the late 60's using the shorter wheelbase 106-111" Camaro's, Mustangs, Cuda's,Darts,etc. The cube limit was 305" probably catering to Ford and GM since they already had 302" engines, but it forced Mopar to downsize the 340 by destroking. I know KB was building engines initially with the early 340 heads which weren't too competitive, but the W-2 heads changed that. Quite possibly, a lot of the short block components were compatible with the Westlake/Trans Am combinations. The series was fairly short-lived though, just never seemed to quite catch on, some of the 305's wound up in some of the last Daytona's and Superbirds as NASCAR kept trying to slow the wing cars down with cube limits and carb restrictors, can't remember who was driving the Mario Rossi built Daytona but it was as fast as the big blocks, seems like it had to run 8000+ though, which was unheard of back in early 70's, don't think it lasted the full race. The Hemi's by contrast were usually not much more than 6400-6600 on the superspeedways, at least not in race trim.
The 305 Daytona was 1971. I don't think that motor has any Baby Grand connections. Just old Trans Am stuff from the year before.
The baby grand started in 1968. There we not too many Mopars that ran it. No big name or factory type cars. I think the best Mopar finish was in Michagan in 1969 in a Dodge Dart. There is a picture of a Mancini 68 Dart I've seen once. Bob Torrozzi thinks he might have drove that car once. I don't have any other info on it.
I've seen one picture that showed what looked to be a 67-69 Barracuda. I think there were a few 66 A-bodies. My guess is old Trans Am cars. They ran some road courses as part of that series too.
I think the Baby Grand in that name was done by the time W-2's came out. IIRC, that series morphed into the Busch series?
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Re: 305 DE stroker?
[Re: autoxcuda]
#941607
03/03/11 04:44 PM
03/03/11 04:44 PM
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Joined: Jan 2010
Posts: 588
Franklin, TN
23T Hemmee
mopar
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mopar
Joined: Jan 2010
Posts: 588
Franklin, TN
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Well, I got a little of it right, I went into the army in April '69 and was overseas most of '71 so memories unfortunatley get diluted along the way, and a lot of what I remember was stuff I just read about. For some reason I didn't think the car finished Daytona but apparently it did. I remember now that the best heads available in 69-70 were the 340 T/A heads, which, I think only had a slight offset intake rocker that allowed the pushrod hump to be removed. The only Mopar Baby Grand I can even remember off-hand is a 66-67 Dart of Big John Sears, was red with #4, although for some reason I can picture Pete Hamilton in a dark blue Cuda,too. Probably just the Alzheimers kicking in....they say your memory is the second thing to go......I forget what the first is........ 
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He told me he would let the clutch out around 8600 RPM and shift at 8800 RPM, this was back in 1975 and pre 1975. New technology would probally raise that to or higher than 9000 RPM with the same block and heads, NASCAR motors have been over 11500 RPM 
